[GS290] OTA Upgrade to 0.14 fails to verify images

• /e/ version: 0.13
• Device model(s): GS290

While upgrading OTA to /e/OS 0.14-2021012698290 the GS290 reboots and fails with:

Finding update package...
Opening update package...
Verify update package ...
E: failed to verify whole-file signature
Update package verification took 4.7 s (result 1).
E Signature verification failed
R error::21
Installation aborted

I redownloaded the file again and the same message showed up.

Workaround

Flash the last version of our recovery!

1. Requirements: fastboot

2. Download the last recovery version: recovery.img (sha256sum)

3. Reboot your device into bootloader adb reboot booloader (If this doesn't work, you can also try starting the GS290 in fastboot: re-start phone while pressing volume-up, choose fastboot by pressing volume up, confirm with volume down. Proceed with next step)

4. Once in the bootloader, flash the new recovery

   fastboot flash recovery recovery-e-0.14-q-2021012698290-dev-GS290.img

5. Once done, reboot your device

   fastboot reboot

6. Now the update will apply without any issue