How to recover an APFS formatted USB drive showing error 49217 on MacOS' Disk Utility?

[peppe77]

Hi there,
I have an external USB drive (2 TB) which cannot mount anymore on my MacOS. The application Disk Utility shows:

Could not mount “DISKNAME”. (com.apple.DiskManagement.disenter error 49217.)

What I tried:
Made an image using R-Studio ("Create Image").
Then I used Parallels and R-Drive Image to restore the image to a fresh APFS formatted new USB drive. The process took 36 hours.
However, if I try to mount the new drive, I get the same error as with the original broken drive.

Any idea how to solve this?
>Thx.

[Alt]

The best way to recover this drive is to recover all files individually and then copy them to the new drive.
Did R-Studio show any files on the image? Can you preview them?