Someone had a similar problem recently (can’t remember on which phone) and the cable/port was the culprit…
Then again someone had the same issue as you with a S10 recently: /e/OS Installation: Signature verification failed (error: 21)
Someone had a similar problem recently (can’t remember on which phone) and the cable/port was the culprit…
Then again someone had the same issue as you with a S10 recently: /e/OS Installation: Signature verification failed (error: 21)