Biktorgj
commented
3 months ago The problem is the newer firmware from Quectel, it doesn't seem to allow downgrading and seems to have some incompatibility with the custom firmware that I haven't been able to find. You can downgrade though.
I assume you are still able to enter fastboot with echo -ne "AT-QFASTBOOT\n\r" > /dev/ttyUSB2
If that's the case, go here: https://themodemdistro.com/efs_recovery And follow the instructions to recreate the EFS area, then it should start working again
The Quectel modem EG25GGBR07A08M2G (bought in January 2024 with the PinePhone Pro Explorer Edition) stopped booting after an attempt to replace the stock firmware with the community one via fwupd (v. 0.7.2) on Mobian 12. The recovery (QDL mode) returned it back to life, and it is possible to communicate to it from the system - but it can't be enabled. In particular the IMEI and the SN are not being retrieved. All the available firmware versions were tried with the same result. The log of the qfirehose: qfirehose.log contains some "bad block" and "connection timeout" messages, while the final status is "Upgrade module successfully." Is there any way to deal with it?