The same issues. I tried all the methods mentioned online. No method works!
Previous preparation error: The developer disk image could not be mounted on this device.. Error mounting image: 0xe8000105 (kAMDMobileImageMounterTATSUDeclinedAuthorization: The server declined to authorize this image on this device for this user.)
My M1 iPad works well on the same Mac. If you fixed the problem let me know, thanks.
CaptainGao
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