EM12-G Firmware Flash failing DL_Firehose timeout

IoT Modules LTE-A Module
1

Hi,
I am trying to flash my EM12-G module and receive the error message “FAIL, DL_Firehose, Time out!”.
I already tried on 2 different computers with additional power supply attached.
The current Revision is EM12GPAR01A04M4G_MSFT and I want to flash to EM12GPAR01A21M4G_01.009.01.009 and I am using QFlash_V5.9 utility.
I also tried in “Sahara” mode, but then I receive error “FAIL, Detect SA download timeout!”.
Please help me, because the modem is not working…
thanks

2

Hello, your current direct upgrade from A04 to A21 span is too large may make mistakes, suggest you find a middle version, such as first upgrade from A04 to A11, and then upgrade from A11 to A21, I hope it will help you, and be sure to ensure that the module power supply voltage is stable, I hope it will help you, thank you.