I have a couple of Tanix TX3 mini TV boxes that I would like be able to backup and recover across devices.
I have put S905-TWRP3-VIT.zip onto a micro SD card and can load TWRP from the boot recovery menu.
I can then backup ROM, system and data partitions to a USB flash drive.
if I now go into the restore menu I can see the backup file.
My problem is that if I now start TWRP from a different device I can no longer see the backup file.
If I create a very small backup, I can see the new backup but not the old one.
If I reboot normally, I can see both backup files within the same directory via any file explorer app.
Obviously, this stops me from being able to restore the system to the target device.
I can't see anything obviously wrong, can someone tell me where I am going wrong please?
Many thanks