I met few times that modems “lost” their firmware.
I updated modems with last firmware available (at this time) 02.33.03 successfully.
In my case modem are used by the customer inside a VM.
I don’t know exactly what they do on the modem, i only know they do lots of reset/powercycle on the modem when they fail to connect to LTE network.
When I check modem from the Linux hypervisor, i found there is no the last firmware in the firmware list (Active FW image is at slot 255).
Somebody already got this behavior ?? Could it explain why modem does not work correctly ?? What is the cause ??
AT!IMPREF? !IMPREF: preferred fw version: 02.33.03.00 preferred carrier name: GENERIC preferred config name: GENERIC_002.072_000 preferred subpri index: 000 current fw version: 02.33.03.00 current carrier name: GENERIC current config name: GENERIC_002.072_000 current subpri index: 000 OK AT!IMAGE? TYPE SLOT STATUS LRU FAILURES UNIQUE_ID BUILD_ID FW 1 GOOD 2 0 0 ?_? 02.24.05.06_? FW 2 GOOD 1 0 0 ?_? 02.24.03.00_? FW 3 EMPTY 0 0 0 FW 4 EMPTY 0 0 0 Max FW images: 4 Active FW image is at slot 255