BG95-M3 blocked in DFOTA

Following poor management of the DFOTA with a BG95-M3 modem,
we have a modem that returns on every reboot
+QIND: “FOTA”,“END”,504

The delta file is BG95M3LAR02A03_01.006.01.006-BG95M3LAR02A03_01.014.01.014.bin
The modem does not respond to any AT commands.
Is it possible to recover the modem without going through QFLASH?

Best regards, Christophe


How is your delta firmware package obtained and whether it matches the current version of your module?


I got it through my FAE.

We have already carried out a hundred updates in DFOTA without worries. I only noticed this problem on one product
The network was very bad on this site and modem power cuts had to be generated following software timeouts. The DFOTA management part will be modified on a future version of our embedded software in order to stress the modem less.

On another modem (EC25), I read in the User Guide that on a 504 error, nothing should be done because the modem retried the UPDATE 5 times before switching back to the previous version. Is this true for BG95? Currently, a reboot of the modem was generated.

The module is BG95M3LAR02A03

Best regards, Christophe

Normally, DFOTA fails and goes back to the original version.