Flash Official Unlocked Firmware on S21 Ultra
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- Опубліковано 14 бер 2021
- Just got my S21 Ultra on launch day, time to flash official unlocked firmware from Samsung to remove all of the preloaded carrier bloat!
Use XAC for Canada, and XAA for US now. Ignore SJR, it now installs bloat when you set it up with a SIM card already installed.
Samsung USB Driver for Windows, Odin 3.14.1 3b, and Firmware Download Tool: (Frija) can be found in the archive.
Samsung Archive:
usheethe.com/ktc2
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Great video! If you are in the US make sure to use XAA not SJR. Many thanks from your neighbors to the south!
Without explanation?
SJR is the old unlocked for Canada on W, XAA is unlocked for US using U1, thats why they said to use XAA and not SJR because SJR doesnt exist for U1, only W. But now Canada now uses XAC for W.
So, TL;DR, use U1 XAA for US, or W XAC for Canada.
@@frozennorthproductions You can also flash U1 on the W model 🙂
I'm actually running U1 XAA on my W S21u because Canada gets super slow updates. Only issue is that Canadian 5G doesn't work on U1, Bixby alarm only reads Fahrenheit, no way to change it in any settings to Celsius, and Samsung Pay requires a Zipcode but we use Postal Codes in the frozen north.
There's a workaround for that last one but it still has its limitations using U1 in Canada so W XAC is preferred for the majority as you lose 5G and the metric system with Bixby lol
hey i know this is old but which version should i use for a g966u s21 plus, tried usc and it got the tmobile
This was the BEST tutorial I've seen. Special thanks for explaining the difference between the CSC and HOME_CSC files. I have a Work Profile for my job through KNOX and your explanation saved me a lot of time by using the HOME version! On ATT in the US and phone quit installing OTA updates since Feb. Nothing worked until I tried your steps and I am not current as of May 2022! Thanks again!
Thanks dude, just flashed my S22+ using this tutorial. Appreciate it!
Thanks a bunch Ben; this really is very useful; finally I'm. able to get rid of the bloatware on my phone; and it is way better in terms of performance without the bloatware. Have a a great holiday.
Thank you so much! I kept getting repartion or that one error! Was on the verge of giving up!!! But realized I was downloading 988u1 instead of 998u1 thank you so much!!
Thats one message I got when I was trying to do this with my A52 5G. I have an Indian version and want to Flash Canadian firmware. Model is SM-A52F and i loaded SM-A52W firmware.
worked great for me in October of 2023 .. purchased a "W" version of the phone from amazon, needed it to be "U1" version for use on AT&T in USA, got it flashed and it's working perfect.
Thanks a bunch mate, worked like a charm.
Helpful vid, man. Thanks.
Can't be soft-bricked if you flash HOME_CSC but in the most cases you have to hard reset it so it's the same. When cross-flashing must be wiped (backup first with SmartSwitch). Great video 👍
following this with hope a flash will fix my mobile conection issues. will update once done :D
I was thinking what computer is that when it is not responding and you listed out the specs. I chuckled 😂
What are installing the android stock Rome and removing the Samsung rom still keep the 120 refresh rate at the highest resolution?
Hey there, Appreciate the video. I have a question. My just received the lastest august update. But the latest firmware i can find on the phone has a date from may. Will that create an issue?
Hi Ben, What firmware should I select for SC-52B Model?
Successfully flashed my S23 plus S916U model with firmware of S916U1 thumbs up to the helpful video
hi, did you choose csc or home_csc ?
@@WaNteDrv backup all your data and use Csc in order to avoid any bricking and get a clean install replacing the csc will wipe all your data while replacing home csc won't wipe your data but there is always a risk of not getting clean install along with boot loop issue
@@faisalb4 thx 🙏
Odin showed a successful flash, but when my s21 ultra 5g on the uk 3 network restarted, a pop-up appeared stating there was an attempt to change the firmware and it reverts back to the old firmware.
What is blocking the flashing on my phone?
Odin states everything went OK but something on/in the phone refuses the update.
I've tried both the csc files and same thing.
I've tried BTU and BTE for the UK S21 ultra and still no luck!
Any help would be appreciated. Thanks.
Can I ask your opinion on recovering data. My phone was factory reset a week ago and my last backup was 1 year ago. Will rooting my phone allow a software such as disk digger or fonepaw to find all my deleted files ?
Hi, Thanks a lot, I have SM-G998W and RWC/RWC/XAC/BMC in Service provider software version, I have tried with SM-G998W and SJR But sim card was inside but RWC did not changed after I did flash with SM-G998W XAC without sim, still RWC, I see it said PASS, what is the problem can be?
Hi,
I have a Samsung Z FLIP 3, it has the US Firmware and i am getting a message to contact Verizon support whenever i try to put indian sim, does flashing it to the Indian firmware will unlock the device carrier restriction? Its paid off and verizon says its unlocked but i am still getting this error
Hi I have a problem again my red magic 5g is not booting. It is stock in the logo where you boot and see the RED MAGIC 5G text I don't know what to do can you help me out please.
Hi brother thank you so much!
I was able to successfully flash my Carrier Unlocked S21 Ultra from Verizon from U to U1. I went straight from 13 to 14, no issues whatsoever.
Although I got my ROM from Samfw because Frija didn't recognise my device.
Although, I used smart switch to backup everything first, then factory reset the phone before I started flashing. The flash only took like 5 minutes.
thanks i have the same s21 ultra from verizon and your comment gave me the courage to do it and now i got U1 as well.
What does it happen if you try to use "Factory data reset"? It will keep the latest firmware or somehow go tho the initial firmaware? I suppose it will keep the last firmware, but just want to have a confirmation from you. Thanks. Great video, btw!
just a question does it voids warranty or does it trips KNox and software status becomes unofficial?
hi i got s22 its korean if i change firmware to euro it can support esim ?
Great Video! Followed directions without any problems. After booting I checked the Service provider software version and it says SAOMC_SM-G998U1_OYM_TMB_12_0036 TMB/TMB,TMB/TMB. Underneath That it now has Carrier configuration version 0.0.0. I tried switching to my network in Network operators but it says unable to connect. Any help would be greatly appreciated.
Pretty detailed video. Thank you. Unfortunately even though I followed everything step by step and did not have any problem during the process, the software version still shows the old one on my phone. Any idea why is that?
It's not recognizing my verizon sim, do a need to pay someone to sim unlock it from xfinity ? I have trying restarting it with sim in.
If I want to have the settings of T Mobile networks can only flash CSC and nothing else? It is that Verizon does not let you select the network mode.
I just flashed from U Verizon to Global U1, but I still have that annoying Verizon network setup.
In short, I cannot select at will between 5G or 4G.
Once the firmware is on are you able to use the esim functionality?
I need your help bro i have a 21 ultra and this was rooted and now i have the original software on my mobile but i can't open samsung pass
helo bro im in uae i have samsung s21 ultra 5g G998U At&t career i have usa phone in u.a.e so which csc i used for u.a.e please help me because my navigation is not working properly i check all sensor with softwere all is ok i thnk i changed the csc frimwere to this phone so solve the problem gps is stucking i do any thing but problem not solve once i try this to change scs so help me in uae which csc i used?
Sir, im having UAE version samsung phone (galaxy a10) and is working perfectly in India right now.. Its missing call recording feature. Shall i flash the stock INDIAN rom version ? Or which Rom should I need to select in order to get call recording feature.
Read Somewhere that people are getting network failure issue after flashing, how to avoid it? Pls advice ,
Thanks in advance 🙏
I have a Samsung s21 ultra demo if y do that work sim ??
Great video with explanation! Thank you!
I have the note 20 ultra from Canada, unlocked. Im in the US can i flash u1 firmware on it? Im not getting 5g on it
I have a Chinese model; SM-G9980 with dual sim, can I change its firmware to a Samsung official unlocked firmware?
Frija keeps saying error and not downloading firmware. What do I do please? I have a samsung s21 that runs on android 11. it won't update both manually or automatically. I have tried to use frija but frija keeps saying error. Please help me
Brother can we use 5G any country like i am from india and i have a s20 plus 5G but this is not working 5g here 😓
Hi please help me, I have AT&T s21 ultra G998U, can I flash US G99U1?
5:18 for some reason this the only method of going into download mode that worked for me so thanks
g998b not change csc pak to inu help me
I have a s7+ tab from verizon
Sim card of other carriers work
But low speeds on 5g...basically 3g
And no phone app for calling....(coz of digits verizon app)
I need original phone and messages app
So can I flash a SJR rom on this verizon tablet? Pls someone reply
need help doing this for the note 9 US version
My device doesn't want to boot up. Is this possible for such a device. It just turned off and don't want to boot up
i have the sm-g998b/ds vietnam varient (xxv) but live in USA and not getting the 5G logo from my carrier (tmobile) would flashing a different firmware help with this?
You have to check the radio bands, if the b/ds model doesn't support the same 5G radio bands, then it won't physically have the right chipset to actually connect to US towers. But, if the bands ARE all the same, then yes, flashing SM-G998U1 with XAA should fix this because it will just be enabling those existing bands in software.
Hi Ben, I'm using an aS21 running SM - G991U Verizon firmware, unlocked Verizon. Which version should I use to remove all the bloatware from Verizon and make sure 5G works fine. I'm in Africa
Do i need to unlock bootloader first??
Hi. Can I flash SM-G996U1 XAA firmware on a SM-G996U XAA phone? Cant seem to find G996U XAA CSC, thanks
XAA is Samsung Official, it's only U1. U firmwares are Carrier Specific, so only TMB, ATT, etc.
The hardware is identical so you can flash U1 XAA. The only different is U1 doesn't have carrier bloat. U does.
Hello Mr. Frozen, Do you have unlocked firmware for S22? thx
Does this still work to get from tmb sm-g996u s21 plus 5g to the canadian w firmware, i read on the internet samsung might have changed how csc works...
They did, U variants get updates from the carrier, U1 get updates from Samsung. And W do both. If a W varient CSC is XAC, you will get the updates from Samaung. If the CSC is anything else, it comes from the carrier.
But all of them auto switch now as soon as you put a SIM card in.
For me, I'm running a W variant with XAC CSC on Bell. So the firmware in settings cha ges to BMC, but the updates still directly from Samaung because it's BMC on XAC firmware. It's kind of confusing but basically you only want two firmwares. Either U1 XAA for US, or W XAC for Canada. You also need to use Patched Odin to flash it because it changes the default model firmware and official Odin will fail to flash
EDIT:
The difference between W and U1 is that W does not use mmWave 5G, only Sub6 cause Canada doesn't have mmWave. And Bixby is metric. So Bixby will read weather in Celsius, Bixby alarm reads in Celsius, and Samsung Pay can recognize Canadian Debit Visa's.
U1 has mmWave, and Bixby is Imperial. Canadian credit cards still work on Samaung Pay with U1 but not Canadian Debit Visa cards.
hi,please help me, I have a 998U on T mobile, wich firmware i must do wnload to get unlocked carrier lock?
SM-G998U1 XAA
Brother please i need help
I buy samsung galaxy s21 ultra LG cellular variant(model no: SM-G998N).problem is i live in Bangladesh. In Bangladesh this phone doesn't support any 3G network band, can I flash korean to Bangladesh or any other country ?
I have a s21 Ultra from panama (SM-G998B) and it's exynos.
Do you know if it's possible to switch my firmware for a canadian one? I just moved to Canada and i'm trying to use samsung pay and such but it's not letting me because it's region locked.
If possible, do i just follow your tutorial?
No, you can only use other Exynos firmware. Canada only has Snapdragon.
But with Samsung Pay, just set it up and enter only the numbers from your postal code with 0's at the end.
Like, if your postal code is A1B 2C3, you would enter 12300 and then you confirm the credit card with the prompt and it just works after that.
Hi can you do an OTA update after flashing cross firmware? Or you can only do manual updates via Odin. Because I want to flash my SM-N975U VZW changed to SM-N975U1 XAA. Thank you.
OTA still works fine, the only difference between U and U1 is the U variants get the updates from the carrier (so only a Verizon SIM will allow OTA using VZW on a U variant phone), but U1 is universal from Samsung and the updates come directly from them for any carrier.
When i plug the usb-c cable in the screen just shows the charging symbol and doesn't turn on (until I push the power button).
The original method is to hit power while holding both volume buttons, but it doesn't work on some phones, so you can just try that to see if it works but usually the USB trick works everything.
Hi! Can I flash my phone with older firmware oneui 6.0 if I have now G998BXXSBGXDH? Let me explain, I read that I cannot flash firmware with lower Bit/SW REV. In my case this is "B" but older firmwares available on internet has lower Bit/SW Rev, for example G998BXXUAGXDA has "A". Other versions of firmware also has lower like 9, 8, 7 and so on. Could you help me? I have problem with not working touch...
I have s21 plus 5g smg996u and it is unlocked but always show at&t logo during turn on and turn off and also there are so many carrier unlocked so I want to flesh smg966u1 firmware is possible?
Were you able to do this?
The OEM unlocking in developer settings is missing, how can I find it?
You don't need it for this anymore. Only USB Debugging
Hi Ben. Im using S21 Ultra G998U with T-Mobile firmware. Which is the version i should flash to delete all the carrier bloat and activate the second imei?. Thanks
SM-G998U1 XAA
Alguna rom libre de operador para latinoamerica , soy de peru y ya probe pet, peo, sam, tnt y en todas me sale operador claro tengo la version s21 ultra G998B/DS
Hey nice video. After doing this will the new updates will come OTA? or you have to flash new firmware every month
OTA will work fine on W and U1. As long as you don't use a different carrier CSC. Gotta make sure it's W XAC or U1 XAA
I have US version SM-G998U (VZW) and flashed the SM-G998U1 (XAA) firmware. It says successful. It takes about 5 minutes, then gets in a reboot loop. I was able to delete data and it rebooted back to VZW ;( Help???
Are you using patched odin or regular one? You gotta use the patched one to convert from U to U1
Hey! Nice video but I have a question. Did you have to go into developer mode and turn on USB debugging go make this flash possible?
Yes, gotta tap on the build number in software version 7 times to unlock it
tysm for the turtorial it helped me so much but i just wanted to ask will you get updates after doing this thing, I hope yes
Once you flash U1 XAA or W XAC, the OTA updates come from Samsung instead of the carrier. That's the only difference now.
My New S22 Ultra has no OEM unlocking in developers options. I have the Exynos 2200. Anyone know where my OEM unlocking is? So I can unlock my bootloader. Also now all the S22 android phones can not record interna audio for third party recorders. The permissions to record internal audio for third party records was removed by Google with android 12 and above.
I have a 998U on T mobile, UICC unlocked, please advise if I flash the 998U1 XAA on it, will it remain UICC unlocked?
Yes, UICC unlock is paired to the drive, firmware changes are fine, it's essentially just a software update.
hello, your odin download link is not working. can you please update that? secondly I have a 998U on T mobile, UICC unlocked, please advise if I flash the 998U1 XAA on it, will it remain unlocked?
Yes, all of my download links went down for a bit because Google Drive changed their Backup and Sync app to Google Drive for Desktop which wiped half my Google Drive cloud storage, everything should be working again but I'm moving to a new cloud storage in the future one I figure something out.
On my first attempt I received a FAIL SHA256 is invalid. What does this mean? It took a while to get my phone to turn back on. I thought it was dead.
You need to use Patched Odin
This works on the normal s21?
So I received a refurbished S21+, it is unlocked and all but it has AT&T bloatware and I can't update to oneui 5.0... I live in italy but this phone comes from Germany and apparently has a US AT&T firmware (SM-G996U). I wanted to flash to SM_G996B with ITV, which is the italian version with android 12 and oneui 4.1.1 is it safe to do so and then get the android 13 update the standard way? Could I straight up get android 13 and oneui 5 flashing the most recent rom or is it even worse?
The other solution I thought about is that I could just get the U1 XAA, but i have U for now and I don't quite understand if it's completely risk free or not
Hey man !
I have a complicated question ...
So i bought a s21+ from china it's a us variant snapdragon 888 model n: sm g996u
The issue is that i live in Europe so i can't get ota updates ...
Is it possible for me to flash a French firmware on mine even tho in Europe samsung is using exynos not snapdragon ( i habd no compatibility issues with the mobile networks even 5g) region code on my phone is GCF/GCF,GCF/TMB.
Side question if i can't flash a French firmware can i flash any American firmware with android 13 or u have to stick to GCF firmwares.
Thank you
Hi guy , I have the same phone, how did you do ? I need to do update, please
Once the unlocked official Samsung firmware is flashed, can the phone be used with any carrier?
Edit: nevermind, i saw you answered this question already. Thanks!
I have a tmobile unlocked standard s21 (SM-G991U). My current carrier (Cricket Wireless) won't allow me to use VoLTE or HD Voice unless I have a cricket branded phone OR a US factory unlocked model (SM-G991U1). So in Frija, would I just type the (SM-G991U1, US factory unlocked variant) for my model number? If so, what would I choose for the CSC? My current CSC is (TMB) would I keep this, or need some sort of us factory unlocked CSC?
CSC should be XAA for unlocked US model.
Appreciate the fast response. Gonna try and do this without messing something up. It's this or drop the $ on another s21😒
Can we get Google play store on a Chinese variant Samsung galaxy s21 ultra 5g
Yes, but you have to flash a Google Play specific firmware for the right model phone (snapdragon or exynos)
Thanks
Hello sir, i have a s21 ultra ATT carrier unlocked phone, can i flash global rom on it, which version of android 13 base global rom can i flash?
Global phones are Exynos, you can't flash a Snapdragon phone with a Exynos firmware. You can only region swap the same SOC variants.
Please which firmware can i download for SM-G991U
SM-G991U1 XAA
Hey I have a TGY (Hong Kong) Snapdragon variant(SM-9980). Can I flash Golbal/US/Canada/ rom ?
No, the Hongkong variant uses different radios so flashing U/U1/W will make it so you won't have any service.
which one should i use for s21 plus?, USC? idk i tried that one and it got me the t mobile version again
U1 XAA for US models
W XAC for Canadian models
I have s21 plus japan varient with snapdragon 888 i want to flesh usa u1 firmware is it possible because because both have sane hardware
No the japan models are different it will fail in odin while flashing
How can i Switch U(at&t) to u1(global) version?
Oh, you meant unlocked, not global. Global is considered the European model. You want the XAA CSC. That's the unlocked U1 firmware from Samsung.
Is this operation cause the lost of data ( pictures, videos...ect) on my phone,
I want to change mine from Argentina to Frence
If you flash Home_CSC, you will not lose anything, but you will experience bugs later on. It's best to back everything up first and then do this with the regular CSC so you can start over fresh
Great video So i bought mine from Samsung but chose the T-Mobile variant. This process would work for me?
Yep, just download AXX for SM-G998U1 instead. Process is exactly the same and you'll save some space too.
My model is SM-G998B/DS and it keeps dropping WIFI signal 😤 i reset my phone and the router too but still the same. Plz any solutions?
I'm really not too sure, it's hard to pin point without diagnostics. Best I could say is just try it at a friend's place and see if it still disconnects. If it works fine somewhere else. It's your router. If it still drops connection, something is wrong with the phone, or possibly just a bad update. Which you would just need to install the latest firmware, factory reset, and don't restore a backup so all wifi settings are untouched and see if it's fixed.
Does it work with the s21 Ultra 5g Snapdragon us verizon
Yes, just download SM-G998U1 for AXX
I definitely want to do this. When you mention to backup phone in the beginning, are you referring to the user data, or is there a way to back up the OS that is not covered in this video?
Plus the Fija link does not work?
Test I had issues with Google Drive so I set up my own cloud for links, so all the files are all over the place right now while I get everything sorted out. There's new links to the Google on the Discord to the latest files right now but you can also find the latest Frija on XDA.
As for backing up, I just meant user data using the Samsung Cloud backup, cause it will back up app data and everything
I bought a Samsung S21 Ultra renewed, right now it uses Verizon's firmware and I want to flash it to stock Samsung to remove the bloatware from Verizon and get rid of their stuff, as well as to have updates quicker. The sim is unlocked so I'm able to use my ROGERS sim card just fine but I just wanted stock Samsung. Would this work to do that and what firmware should I use then. Also would this work for the latest One UI or is it only an old version of Android. It is the SnapDragon Version, My model is SM-G998U.
Were you able to do this?
Will this make a locked phone unlocked?
Anyone know how to unlock the bootloader for the T mobile USA variant??
Contact elliwigy on XDA or go to their website
Hi Ben! I've bought SM-G9980_OZS_TGY (Hong Kong version) cuz in Russia Samsung officially sells only Exynos versions. Now I'm looking for a way to change CSC to unlock native call recording. Not sure which firmware to choose. For 9980 looks like only CHC (China mainland) allows call recording. Am i doing all right ir there is some another firmwares with call recording that gonna be better for my 9980?
I'm not sure, I don't have a exynos model to test but I thought all of China uses Snapdragon models and only Hong Kong for Exynos.
@@frozennorthproductions Mine is a Snapdragon version. So the question is can i use any other firmwares? Or should i use only G9980 firmwares for G9980?
@@TheLethallist you can just use SM-G998U1 XAA
great video! i have 2 questions:
1. what is your recommended method to backup your data and settings? i thought about smart switch / google drive / samsung, but it takes HOURs to restore everything. i thought maybe an image backup to PC was fastest so i'm looking for any recommendations you got.
2. bought an unlocked att phone to switch to tmobile. still has att branding and some att apps/functionalities. i am thinking about U1 but also thought about flashing to tombile to take advantage of any incentives, such as the UI4 beta. thoughts on how to go about this?
thanks so much!
I use Samsung backup to OneDrive because it backs up everything without needing root access like other apps.
You would have to flash G998U TMB, have T-Mobile SIM, and then sign up for thr Beta, but I already have a video on how to get the beta without official access now cause in Canada we got left out from the programme
@@frozennorthproductions I'd appreciate your advice. I followed the guide exactly and used the latest 7/1/2023 U1 XAA firmware for my SM-S908U S22 Ultra. Before doing this, the firmware was TMB/TMK (Metro by T-Mobile) which was correct because my phone was originally from T-Mobile. After flashing the XAA firmware and restoring my backup, my phone is stuck on: TMK/TMK, TMK/XAU.
I don't understand what I did wrong. I thought my phone should be all XAA now. I used the right firmware and patched Odin. I didn't flash with a SIM card in. In fact I had an eSIM for a Verizon MVNO, not Metro or T-Mobile. I'm totally lost. Is this to do with my backup? Did I restore the old CSC somehow?
I have question if i have s 20 + 5g (exynos version) and i want to have xeo csc (unblocket for my country). Do i just dowload xeo or what? I heared of somepeople got back their csc after succesfull flash . What about knox and warrianty?
You can flash any CSC, these are official files so they don't trip Knox
@@frozennorthproductions this is possible to csc return after that (some people on internet write they got their defult csc back after sucesfful flash) and if so what to do next ?
I have a galaxy s21 ultra 5G I have no updates since April 1 2023, I am stuck on android 13, one ui 5.1, cs xaa
I was wandering if that new firmware would have native call recording enabled. I hear only Exynos devices can only record after their csc is switched?
I didn't even know this was a feature, I don't have anything like this one mine (SM-G998W running XAA U1)
@@frozennorthproductions what does this firmware means other than less built in apps from the carrier? things like, Wi-Fi Calling, VLTE or any region specific advantages over other FW like PMB or BMC?
It's just the native version Samaung released before carrier's made all their own changes. So if a Carrier disables wifi calling or tethering then this firmware will enable it
Hello, I bought an s21 ultra from my friend. It has a tmobile branding. I would like to install a pure firmware now. Will I then also get updates for the future or do I always have to install the firmware manually? and do I lose my guarantee after the firmware flash?
No, one you convert it over it's OTA just like a normal phone, all this does is remove carrier bloat by using the unlocked firmware from Samsung
hello friend have you tried it on your tmobile s21 ultra im trying im getting ID:0/006> Odin engine v(ID:3.1401)..
File analysis..
skip file list for home binary
spunvm.bin
quest.fv
testvector.fv
persist.img
misc.bin
userdata.img
carrier.img
metadata.img
Home Binary Download
Total Binary size: 10062 M
SetupConnection..
Initialzation..
FAIL! SHA256 is invalid
All threads completed. (succeed 0 / failed 1)
download for odin is missing. Do you need patched?
Yeah, Google Drive dated their desktop app and half my Google Drive got wiped, they should be working again now.
The app for downloading the firmware, Frija, says the firmware for my model can't be found.
Am I cooked?
Can i do this onn G998U?
Maybe it's possible
Is it possible to do for S21+ ?
This works for any Samsung as long as you replace the model number and CSC with the version for your device
What about Verizon firmware flash onto AT&T s21 ultra?
Isn't Verizon a CDMA carrier? I don't think there's an unlocked version for that. Only GSM devices.