Saw some previous posts claiming that backupmenu completely doesn't work & bricks the device.
I suspect some are not aware that there is another distant & somewhat related problem:
- Start off with KP51.
- Backup in full using Backupmenu.
- Upgrade to KP52.
- Restore using last backup.

Above would unlikely work if my reasoning is correct:

• Start off with KP51.
• Backup in full using Backupmenu.
  . - Kernel in dedicated NAND partition is KP51.
  . - /lib/modules/current points to KP51 modules.
  . - Note: Can't backup kernel in dedicated NAND partition.
• Upgrade to KP52.
  . - Kernel in dedicated NAND partition is now KP52.
  . - /lib/modules/current points to KP52 modules.
• Restore using last backup.
  . - Note: Restore can't restore kernel to dedicated NAND partition.
  . - Kernel in dedicated NAND partition is still KP52.
  . - /lib/modules/current points to KP51 modules as per backup.
  . - KP52 modules are non-existent anywhere (as per backup).

Above results in a "bricked" device as kernel modules can't be found.

I probably had this several counts & had a couple of useless backups as a result. As a result, am much more careful with backups especially when using KP.

kh