Hmm… I would say… this is not a very good error message.

Anybody want to give me advice on how to back up everything important from an Android phone? Assume I have about… eight hours and somewhere in there I have to sleep.

I guess I'm using adb, but I barely know what I'm supposed to be grabbing, also neither adb pull nor the https://github.com/jb2170/better-adb-sync tool google says to use is like… y'know… doing anything…

GitHub - jb2170/better-adb-sync: Completely rewritten adbsync with --exclude

Completely rewritten adbsync with --exclude. Contribute to jb2170/better-adb-sync development by creating an account on GitHub.

GitHub
@mcc maybe this is not what you're looking for, but Samsung has a "Smart Switch" app that copies the whole phone to another phone. I *think* you're still able to use the original phone (no guarantee).
@morten_skaaning sounds nice. also sounds like you need a samsung toh
@mcc @morten_skaaning nope, just recently my wife had to send her flip for repair. smart switch does not back up everything, not even close. luckily a lot of it I backed up manually per app, but we still lost some files.