It looks like it is using u-boot. Most likely there's a script somewhere in the u-boot env that selects eMMC for boot, which you could modify for booting from NAND. You can check by doing the command 'printenv' (no quotes) and see what's listed under the variable bootcmd. I've got significant experience with this type of hardware and research so feel free to reach out if you have any further questions. By the way, eMMC is generally pretty easy to do a rework by hand, especially with a new freshly balled chip. You can buy some decent industrial-grade Sandisk or Toshiba eMMC from Mouser or Digikey. Kapton tape and preheating help a lot. The eMMC will probably be faster ultimately. If that NAND chip was not populated on the board, odds are there are some missing resistors/capacitors on the NAND pins somewhere along the traces if the pins aren't muxed with the eMMC pins.
Hello. I'm now working on Idrac recovering on dell 12gen. But now have no results in this deal. Now already bricked two motherboards, one of them are T320, and one R620. After resoldering chip on R620, it just in bootloop. T320 is loading in uboot and no results in recovering too. Do you have some instruction for recovering, and can u please share with it?.. Thanks.
So... I have at least one R420 that I've been debating on how deep to dive to try and fix, so of course I came across your videos. Did you ever figure it out? I see it's been two years but looks like no "part 3".
I have two R420 servers, each with something like 196GB RAM. They are yours if you want them to make a video on. Ended up getting an R720 for my actual "server needs".
So, I've been up far too long but spotted a couple things I missed trying, I'll poke around some more (basically checking the flinfo command, as well as manually specifying the flash memory/u_nand as a recovery target once I've gotten sleep. If I make progress with that there will be a probably pretty short screen capture video on it.
Unfortunately I ripped a couple pads and it didn't work, not sure if it's because of that or not but I'm looking into getting another bricked motherboard to test with.
Can you dump your SPI IDRAC chip bios and please send it to me? I accidentally erased the spi flash 😂 and it seems we have the same server Poweredge R520...
I have exactly the same problem, same board. I was able to install the enterprise iDRAC with the SD card and mine did successfully flash but ended up having file system errors upon reboot. I can post some of the content of my serial logs too if you want. There is also a way to recover from tftp once you get to the iDRAC prompt, but that seemed to brick someone's chip for good in the win-raid forum when they changed the boot variables to boot from tftp. Look towards the bottom of page 5 on the win-raid forum. What is really irritating are two things: 1. that we can't simply tell the server "You know what? It's not the end of the world to NOT have iDRAC so bypass it" and 2. the fact that these R420s with the express setup are still hard coded to look for the firmimg.d7 file from an SD card ... ummm, hello!? there is no SD card on the express variant. Thanks Dell, thanks a lot.
el mejor intento de reparar el servidor dell, tengo un R320, el cual tambien esta con falla en el arranque por la memoria eMMC, es un error que ocurrio al actualizar el firmware en 2022, asi que si no logro solucionarlo por el puerto serial, talves le meta un programa con arduino para omitirlo y poder controlar los ventiladores atraves de un regulador PWM. nuevamente muchas gracias por la informacion
you still need eMMC to store the firmware target/source. For some reason, that configuration is only looked for in eMMC. I tried setting the source as tftp and target to u_nand once but it will still fail on my Dell SC8000. @JunctionRunner
Same issue on an r720 though it seems the emmc modules are different. Trying to set it to boot forever from the SD card :p Or just waiting till I'm older and wiser to fix it another way
Unfortunately not, I need to grab another board, but I must have damaged one of the needed pads on the bga chip, since it wouldn't work after multiple reflows. These boards really need a crapton of heat, and patience.
Good morning I have a server like that and I don't know what to do with it, it is new without using it, I can sell it very cheaply if you are interested
It looks like it is using u-boot. Most likely there's a script somewhere in the u-boot env that selects eMMC for boot, which you could modify for booting from NAND. You can check by doing the command 'printenv' (no quotes) and see what's listed under the variable bootcmd. I've got significant experience with this type of hardware and research so feel free to reach out if you have any further questions. By the way, eMMC is generally pretty easy to do a rework by hand, especially with a new freshly balled chip. You can buy some decent industrial-grade Sandisk or Toshiba eMMC from Mouser or Digikey. Kapton tape and preheating help a lot. The eMMC will probably be faster ultimately.
If that NAND chip was not populated on the board, odds are there are some missing resistors/capacitors on the NAND pins somewhere along the traces if the pins aren't muxed with the eMMC pins.
Hello. I'm now working on Idrac recovering on dell 12gen. But now have no results in this deal. Now already bricked two motherboards, one of them are T320, and one R620. After resoldering chip on R620, it just in bootloop. T320 is loading in uboot and no results in recovering too. Do you have some instruction for recovering, and can u please share with it?.. Thanks.
do you by chance have a dump of the r420 spi chip? i believe the mega link is dead in the winraid forum
So... I have at least one R420 that I've been debating on how deep to dive to try and fix, so of course I came across your videos.
Did you ever figure it out? I see it's been two years but looks like no "part 3".
I have two R420 servers, each with something like 196GB RAM. They are yours if you want them to make a video on. Ended up getting an R720 for my actual "server needs".
So, I've been up far too long but spotted a couple things I missed trying, I'll poke around some more (basically checking the flinfo command, as well as manually specifying the flash memory/u_nand as a recovery target once I've gotten sleep. If I make progress with that there will be a probably pretty short screen capture video on it.
Have you made any more progress? I'm quite interested in this, I have a r420 with a borked idrac that I need to look into soon :)
Unfortunately I ripped a couple pads and it didn't work, not sure if it's because of that or not but I'm looking into getting another bricked motherboard to test with.
Will be there episode 3? I have like alot dell servers with exactly same problem. One of the most common problem with DELL gen11-gen13 servers,
Can you dump your SPI IDRAC chip bios and please send it to me? I accidentally erased the spi flash 😂 and it seems we have the same server Poweredge R520...
I have exactly the same problem, same board. I was able to install the enterprise iDRAC with the SD card and mine did successfully flash but ended up having file system errors upon reboot. I can post some of the content of my serial logs too if you want. There is also a way to recover from tftp once you get to the iDRAC prompt, but that seemed to brick someone's chip for good in the win-raid forum when they changed the boot variables to boot from tftp. Look towards the bottom of page 5 on the win-raid forum. What is really irritating are two things: 1. that we can't simply tell the server "You know what? It's not the end of the world to NOT have iDRAC so bypass it" and 2. the fact that these R420s with the express setup are still hard coded to look for the firmimg.d7 file from an SD card ... ummm, hello!? there is no SD card on the express variant. Thanks Dell, thanks a lot.
Hello I have something similar to yours, tell me could you find a solution? I have a T620, but I don't know how to boot from SD card
@@williams1500 Review the first video - he shows you how to boot from SD. If you don't have the SD card slot you're out of luck.
我有一台dell r720的,老是循环重启，如何像你这样子短接一下可以进入手动？
Hey mate, did you manage to sort this?
Is there a way to just disable the entire idrac and not have to hit F1 during boot?
el mejor intento de reparar el servidor dell, tengo un R320, el cual tambien esta con falla en el arranque por la memoria eMMC, es un error que ocurrio al actualizar el firmware en 2022, asi que si no logro solucionarlo por el puerto serial, talves le meta un programa con arduino para omitirlo y poder controlar los ventiladores atraves de un regulador PWM.
nuevamente muchas gracias por la informacion
I have an SC8000 (aka, R720). Are you X0II0 on WinRaid?
you still need eMMC to store the firmware target/source. For some reason, that configuration is only looked for in eMMC. I tried setting the source as tftp and target to u_nand once but it will still fail on my Dell SC8000. @JunctionRunner
@@oso2k I am, I tried to replace the emmc but ripped a couple pads, going to look into getting another bricked board
@@JunctionRunner Too bad you're up in Canada. Would cost me about $150 round trip to send you my Dell SC8000.
Same issue on an r720 though it seems the emmc modules are different. Trying to set it to boot forever from the SD card :p Or just waiting till I'm older and wiser to fix it another way
Did you ever make any more progress on this?
Unfortunately not, I need to grab another board, but I must have damaged one of the needed pads on the bga chip, since it wouldn't work after multiple reflows. These boards really need a crapton of heat, and patience.
I will very, very carefully and delicately... Ah F**K!
Good morning I have a server like that and I don't know what to do with it, it is new without using it, I can sell it very cheaply if you are interested
Can you please make a video trying to boot from tftp?
I actually ended up buying a new motherboard.. if u want I can send u my old one just DM in case u are interested