FIXED-Newer ver of EC25 Modems, FOSS FW upgr breaks funct- repair FW and IMEI rebuild
It looks like this might be a new hardware issue covered here,
https://themodemdistro.com/efs_recovery
lets see
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I am currently letitng the modem sit since there is mention of some automatic process to intentionally break and then fix the modem firmware and IMEI
I will archive the description and steps here, I would appreciate comments on a next step as the modem has not reappeared as I have edited this
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Recovery of the EFS area
So, you're probably here because your modem suddenly stopped booting after a failed firmware ugrade or downgrade.
Long story short: something changed in the way Quectel builds their images and it seems like if you got a new board and attempt to flash an older image version the modem will stop being able to read its own EFS area and end up in offline mode with no IMEI.
How do we fix this?
With a bit of patience and a recovery package
1. Download this: EFS Recovery package https://themodemdistro.com/packs/efs_recovery.tar.gz
2. Enter fastboot
3. If you're already running the custom firmware, run fastboot oem stay (I had to use echo -ne "AT+QFASTBOOT\r" > /dev/ttyUSB2 to get fastboot)
4. Unpack the tar gz (tar -xvf efs_recovery.tar.gz )
5. Flash the custom bootloader and boot it: fastboot flash aboot appsboot.mbn && fastboot reboot && fastboot oem stay
6. Flash the placeholder sys_rev image: fastboot flash sys_rev sys_rev.bin
7. Rebuild your IMEI: fastboot oem fix_imei 12345678901234 (where 12345678901234 is the IMEI as shown in the RF shield on the back of the phone)
8. Tell the modem to boot again: fastboot continue
This will overwrite your sys_rev partition with a purposedly broken one, to which we'll write a new IMEI, calculate its CRC, and flash to the EFS area. This should allow the modem to go back to previous stock version you want too
____________________________________________________
I am going to try to shut down, remove battery, and then restart(with battery in)
my next step will be to try to load the custom firmware or maybe the OEM, we will see
_______________________________________________________
Scotty:"Damage repaired Captain! engines online."
Adama:"get us out of here, FTL jump!"
Chewbacca:"Woof! Woof!<ship jumps to lightspeed>"
That did it....
If anyone wants to point me to where I can delete stuck MMSs it would be appreciated, not a big deal, alternatively how to configure MMS.
if anyone points me to the command(I have been using it) I would like to report the currently running firmware v but for now I am going to take a break now that I have a working Mobian PPP.
https://themodemdistro.com/efs_recovery
lets see
______________________________
I am currently letitng the modem sit since there is mention of some automatic process to intentionally break and then fix the modem firmware and IMEI
I will archive the description and steps here, I would appreciate comments on a next step as the modem has not reappeared as I have edited this
__________________________________
Recovery of the EFS area
So, you're probably here because your modem suddenly stopped booting after a failed firmware ugrade or downgrade.
Long story short: something changed in the way Quectel builds their images and it seems like if you got a new board and attempt to flash an older image version the modem will stop being able to read its own EFS area and end up in offline mode with no IMEI.
How do we fix this?
With a bit of patience and a recovery package
1. Download this: EFS Recovery package https://themodemdistro.com/packs/efs_recovery.tar.gz
2. Enter fastboot
3. If you're already running the custom firmware, run fastboot oem stay (I had to use echo -ne "AT+QFASTBOOT\r" > /dev/ttyUSB2 to get fastboot)
4. Unpack the tar gz (tar -xvf efs_recovery.tar.gz )
5. Flash the custom bootloader and boot it: fastboot flash aboot appsboot.mbn && fastboot reboot && fastboot oem stay
6. Flash the placeholder sys_rev image: fastboot flash sys_rev sys_rev.bin
7. Rebuild your IMEI: fastboot oem fix_imei 12345678901234 (where 12345678901234 is the IMEI as shown in the RF shield on the back of the phone)
8. Tell the modem to boot again: fastboot continue
This will overwrite your sys_rev partition with a purposedly broken one, to which we'll write a new IMEI, calculate its CRC, and flash to the EFS area. This should allow the modem to go back to previous stock version you want too
____________________________________________________
I am going to try to shut down, remove battery, and then restart(with battery in)
my next step will be to try to load the custom firmware or maybe the OEM, we will see
_______________________________________________________
Scotty:"Damage repaired Captain! engines online."
Adama:"get us out of here, FTL jump!"
Chewbacca:"Woof! Woof!<ship jumps to lightspeed>"
That did it....
If anyone wants to point me to where I can delete stuck MMSs it would be appreciated, not a big deal, alternatively how to configure MMS.
if anyone points me to the command(I have been using it) I would like to report the currently running firmware v but for now I am going to take a break now that I have a working Mobian PPP.
