very helpful information you have shared. thanks a lot, but during updating firmware i have lost my module and its D5 LED became Dim and continuous ON and also not responding on AT commands. is there any solution to bring it back ?
hi,i have a problem with simcom sim900 customer flash loader program when i open the program this sentence appear to me in fieled below the start button "wrong ini file default used"can u help me with this problem?
Ravi, great efforts ! I have couple of questions. my requirement is to use mqtt protocol on sim900a, is it possible ? have you tried it ? I guess a 3G supported module from simcom ( I don't remember it's model name ) can run mqtt AT commands. Can I upload it's firmware to sim900a ?
Hi I connected the Sim900a to my pc using a FTDI USB to Serial connector opened the sim900 flash loader program and clicked start I get one of two things Error during change baud rate and error during loader initialization or Error during acknowlegement waiting, error during download data via Boot ROM and Error During download loader in RAM both of these outcomes end with check target setting Help!
Marc Anderson make sure you have not connected other boards also on same uart lines, like arduino. Uart lines of module should only be connected to USB to uart and don't connect module uart lines directly to converter as Sim900 only supports 2.8v io lines
HI, i have a problema, when i try to load the new firmware it pops up a window that says: "The loader file path is not exists" i wonder to know what is going on with it. Hope you answer ASAP
Hi , Haven't encountered this problem before.. Please post here, there are some discussions going on, if someone has encountered this, they will respond. www.embeddedadvice.com/
Hi, My sim900 module got a problem: After I upload a FOTA firmware to it, I can not turn it on by PWRKEY pin anymore. Have you ever confront with issue? Could you please gie me some suggestion?
Hi , I have not came across this issue so far. May be that firmware changes the default behaviour of the PWRKEY pin. I am not aware of FOTA firmware too. Where did you find it?
hi sir your video is wonderful. i have one question sir. FTP at comments work in SIM800C or it only for SIM900? Because i have only sim800. that's i am asking. please help me sir...
Sir please help me I have flash my sim900a as you guide the version is st_enhance after flash it is not giving response that is the LED connect is continuously blink and not registered also the TMFT AT command not responding .what should I do?
Hi Ravi, after flashloader has been downloaded I get the three error messages "Error during change baud rate", "Error during loader initialization" and "Check target settings". What can I do to get it work? Thanks for your help ahead!
HI Ravi, i have same firmware already installed on sim9001 but i cant make it register my sim. i`m uk and tried a lot stuff. sim is definitely working with no pin but i cant register it? what should i do
Hi Mert, Try checking the current frequency band using AT+CBAND? Try setting the frequency bands using AT+CBAND="EGSM_DCS_MODE" or Try setting the frequency bands using AT+CBAND="EGSM_MODE,ALL_BAND"
Hi i would like to know how to wake up the sim900A after it has not being active for about 10 or so plus minutes . Im using a PIR sensor as the trigger to activate it. it works within the first few minutes but once asleep it stays asleep. If you could please help me with this thanks.
If you are using DTR pin you can use it to wake up from sleep modes. It should work even after longer intervals also. If its not, then might be some other problem in circuit
Thank you for the reply Ravi sorry for the long link address but this is the model of Sim900 i have it does not have the DTR pin or it does not seem so to me. Forgot to mention that i have it wired up to an Arduino and the PIR. I just thought there has to be a AT command that i could issue in the Arduino code to wake it up. And also i cant seem to find any information on the wiring of the DTR wake up method. Im also using it according to one of the UA-cam channels (Electronics clinic). www.google.com/aclk?sa=l&ai=DChcSEwiR54Gw7_zpAhUEh9UKHVcsBDoYABAOGgJ3cw&sig=AOD64_24z8UgkaFAPK1SRZr_3IeCJA-Bcw&adurl&ctype=5&ved=2ahUKEwjztPiv7_zpAhWF_IUKHVbwCLUQvhd6BAgBEFk
@@errolsternberg8185 You can also wake it up by UART command in sleep mode 2. Sending any byte wakes up the module. Don't forget to like share and subscribe :)
You might be able to use Arduino as a USB-UART converter, if you don't have one. But i am not sure if the Arduino will interfere when uploading the firmware. You should be able to make use of Arduino COM port and program firmware.
It might be antenna problem most probably. Check if you are using proper antenna and also where are you testing the device , that also might effect if signal strength is lower. And check if 2G network is available in your area as these modules are 2G only.
The SIM900 is 2G only? Yes it does have the antenna that came with the module. It has been able to successfully register at times. Do you think its because its only able to access 2G sometimes and not others?
Yes its 2G only. What i am telling is, In some countries the 2G network is being shutdown and only 3G and 4G services are running . So it might be a possibility that in your area the 2G network might not be working. But since you are able to register some times means the 2G network is present in that area. Its something else. Either signal strength/Antenna or Power supply issue.
Ok, is there a way to make the module only connect to 2G? I know 2G is still running so it works, but just so I can at least work through a project on 2G
hello, thank u for the amazing video. I would like to ask if it is necessary for me to upgrade my sim900a from 113B11SIM900M64_ST to 1137B05SIM900M64_ST_ENHANCE for me just to send and receive an SMS and if yes, why? thank you in advice
You can connect using RS232 or USB converter or direct USB lines, if your module has option for it. But if it's bare module you would need a breakout board. Don't forget to share and subscribe :)
@@RaviPujar Thank you ravi. Just now subscribed your channel. Please let me know which one is better to use in posting data on website Sim900A or Sim800L?
It means your source is less than 3.6V. Or it is not able to supply 2A of current. Use a power supply which is capable of supplying stable 4V,, @ 2A current.
Hi, Am having a problem in updating firmware. It says that the flash does not support update option check target settings Can you help me to solve this?
After successful uploaded frimware in
Modem ,it respond AT command but not registering to network, please help me
How to connect gsm & serial port(details please)?
hello I get an error in the sim900 module
AT+HTTPSSSL=1
ERROR
Will uploading firmware to the card fix this error?
very helpful information you have shared. thanks a lot, but during updating firmware i have lost my module and its D5 LED became Dim and continuous ON and also not responding on AT commands. is there any solution to bring it back ?
Dear Ravi where I can find newer firmware than 1137B11SIM900A32_ST? (32mb)
Only SIMCOM support might have. SIM900 series is obsolete now
hi,i have a problem with simcom sim900 customer flash loader program
when i open the program this sentence appear to me in fieled below the start button "wrong ini file default used"can u help me with this problem?
Have you extracted the zip file to a folder before opening the executable? If not please extract and run.
Sir mine is only giving Ok to AT command fkr others it is giving Error what maybe the problem, mine is SIM800C
i try to update firmware but it stuck at power up target supply then i switch off and on supply but it still stuck in that
any way, have you solved your problem?
Ravi, great efforts ! I have couple of questions. my requirement is to use mqtt protocol on sim900a, is it possible ? have you tried it ? I guess a 3G supported module from simcom ( I don't remember it's model name ) can run mqtt AT commands. Can I upload it's firmware to sim900a ?
Thank you for valuable video.... I want to FW update of SIM7600E .....It will update through usb or serial ??
hi how did you connect your sim module to computer ??did you use anything else for connection??
Hi Friend, i get this errors: err076 -Error during acknowledgement; error 76-Error during downlowd application in flash.
Please help! Many Thanks!
Hi I connected the Sim900a to my pc using a FTDI USB to Serial connector opened the sim900 flash loader program and clicked start I get one of two things Error during change baud rate and error during loader initialization or Error during acknowlegement waiting, error during download data via Boot ROM and Error During download loader in RAM both of these outcomes end with check target setting Help!
Marc Anderson make sure you have not connected other boards also on same uart lines, like arduino. Uart lines of module should only be connected to USB to uart and don't connect module uart lines directly to converter as Sim900 only supports 2.8v io lines
Sir Can u send me the diagram for connecting the SIM900 with the TTL, thanks.
HI, i have a problema, when i try to load the new firmware it pops up a window that says: "The loader file path is not exists" i wonder to know what is going on with it. Hope you answer ASAP
Hi ,
Haven't encountered this problem before..
Please post here, there are some discussions going on, if someone has encountered this, they will respond.
www.embeddedadvice.com/
Hi, My sim900 module got a problem: After I upload a FOTA firmware to it, I can not turn it on by PWRKEY pin anymore. Have you ever confront with issue? Could you please gie me some suggestion?
Hi ,
I have not came across this issue so far. May be that firmware changes the default behaviour of the PWRKEY pin.
I am not aware of FOTA firmware too. Where did you find it?
hi sir your video is wonderful.
i have one question sir.
FTP at comments work in SIM800C or it only for SIM900?
Because i have only sim800. that's i am asking. please help me sir...
Where do I download the firmware versions and bootloader flash
Hi Marcio,
Links to all the files i have are in the description
Sir please help me I have flash my sim900a as you guide the version is st_enhance after flash it is not giving response that is the LED connect is continuously blink and not registered also the TMFT AT command not responding .what should I do?
Hi,
You might have downloaded a wrong firmware.
There are two types of modules, 32 bit and 64 bit. You have to load corresponding firmware.
Hi Ravi, after flashloader has been downloaded I get the three error messages "Error during change baud rate", "Error during loader initialization" and "Check target settings". What can I do to get it work? Thanks for your help ahead!
Hi,
Could you please post your problem with screen shots here?
www.embeddedadvice.com/
We can discuss.
HI Ravi, i have same firmware already installed on sim9001 but i cant make it register my sim. i`m uk and tried a lot stuff. sim is definitely working with no pin but i cant register it? what should i do
Hi Mert,
Try checking the current frequency band using AT+CBAND?
Try setting the frequency bands using AT+CBAND="EGSM_DCS_MODE"
or
Try setting the frequency bands using AT+CBAND="EGSM_MODE,ALL_BAND"
Hi i would like to know how to wake up the sim900A after it has not being active for about 10 or so plus minutes . Im using a PIR sensor as the trigger to activate it. it works within the first few minutes but once asleep it stays asleep. If you could please help me with this thanks.
If you are using DTR pin you can use it to wake up from sleep modes. It should work even after longer intervals also. If its not, then might be some other problem in circuit
Thank you for the reply Ravi sorry for the long link address but this is the model of Sim900 i have it does not have the DTR pin or it does not seem so to me. Forgot to mention that i have it wired up to an Arduino and the PIR. I just thought there has to be a AT command that i could issue in the Arduino code to wake it up. And also i cant seem to find any information on the wiring of the DTR wake up method. Im also using it according to one of the UA-cam channels (Electronics clinic). www.google.com/aclk?sa=l&ai=DChcSEwiR54Gw7_zpAhUEh9UKHVcsBDoYABAOGgJ3cw&sig=AOD64_24z8UgkaFAPK1SRZr_3IeCJA-Bcw&adurl&ctype=5&ved=2ahUKEwjztPiv7_zpAhWF_IUKHVbwCLUQvhd6BAgBEFk
@@errolsternberg8185 You can also wake it up by UART command in sleep mode 2. Sending any byte wakes up the module. Don't forget to like share and subscribe :)
Hi.....please upload video on FM update of SIM7600EI to work for jio sim card.
Can you flash the firmware using an Arduino? I'm also on a mac which is another issue, but I can bootcamp/vmware if this will work.
You might be able to use Arduino as a USB-UART converter, if you don't have one. But i am not sure if the Arduino will interfere when uploading the firmware. You should be able to make use of Arduino COM port and program firmware.
Good afternoon, I would like to know how to connect the module to the PC via UART ? , You have a wiring diagram ?
Wolfplata Module Tx to UART Rx and Module Tx to UART Rx. Ground to ground, Vcc to Vcc, I believe it requires 5v
thanks you Ravi , i will write to the email asking about the connection USART
awesome, how did you connect it to the pc?
I used CP2102 USB-UART converter.
My problem is that sometimes the module registers on the network, other times it doesnt.
It might be antenna problem most probably. Check if you are using proper antenna and also where are you testing the device , that also might effect if signal strength is lower. And check if 2G network is available in your area as these modules are 2G only.
The SIM900 is 2G only? Yes it does have the antenna that came with the module. It has been able to successfully register at times. Do you think its because its only able to access 2G sometimes and not others?
Yes its 2G only. What i am telling is, In some countries the 2G network is being shutdown and only 3G and 4G services are running . So it might be a possibility that in your area the 2G network might not be working. But since you are able to register some times means the 2G network is present in that area. Its something else. Either signal strength/Antenna or Power supply issue.
Ok, is there a way to make the module only connect to 2G? I know 2G is still running so it works, but just so I can at least work through a project on 2G
I need 32 bit
hello, thank u for the amazing video. I would like to ask if it is necessary for me to upgrade my sim900a from 113B11SIM900M64_ST to 1137B05SIM900M64_ST_ENHANCE for me just to send and receive an SMS and if yes, why? thank you in advice
For SMS any firmware works.
Dont forget to share and Subscribe :)
How to comnect SIM900 module to laptop?
You can connect using RS232 or USB converter or direct USB lines, if your module has option for it. But if it's bare module you would need a breakout board. Don't forget to share and subscribe :)
@@RaviPujar Thank you ravi. Just now subscribed your channel. Please let me know which one is better to use in posting data on website Sim900A or Sim800L?
Hi @@RaviPujar , AT+HTTPACTION=1 ,603,0 getting this error. How to rectify?
Thank you very much you are right. i have sim900a 32 bit .
Thank you for watching . Dont forget to Subscribe :)
thanks you
Thanks for watching. Don't forget to like share and subscribe 😊
Thanks
Thank you for watching, Dont forget to Subscribe :)
I HAVE THIS MESSAGE : UNDER-VOLTAGE WARNNING
It means your source is less than 3.6V. Or it is not able to supply 2A of current. Use a power supply which is capable of supplying stable 4V,, @ 2A current.
Hi, Am having a problem in updating firmware. It says that the flash does not support update option check target settings
Can you help me to solve this?