I use /e/OS 1.3 on a Galaxy S10 and wanted to update to /e/OS 1.4 or better 1.5.
After choosing settings/systemupdates/e/OS 1.4 the update started and later the smartphone restarted. After reboot the recovery mode opens with the following error messages :
E: Could not find instance ‘default’ in library email@example.com. Keeping library open.
E: Error opening trace file: no such file or directory (2)
Supported API: 3
Finding update package…
Verifying update package…
E: failed to verifying whole-file signature
Update package verification took 2.3 s (result 1).
E: Signature verification failed
E: Error: 21
After then restarted the phone with /e/OS 1.3
What can I do or what the best way to get recent /e/OS updates?