Yea because we use a custom payload to be able to do something in the background was normally wouldnt be possible. And this isn't simply turn on the dev modus of the ps3. This can happen in case of that the custom payload have get a new systemcall that define to swap the given dir with the dir from the /Dev_BDVD/ or the /App_Home/.
[let us say someone have added the syscall: "sys_lv1_systemcall_Jailbreak" and when this syscall comes into action it will do: replace %1=%2]
Even with CJ´s patch to the Backup Manager there for that also debug user can install and run the hb app you will not be able to boot backups with the programm.
Douring reboot back into the xmb the magic is done and two variables will be swapped with each other.
The Backup Manager set up the following variables:
and after that he will call "sys_lv1_systemcall_Jailbreak" to the HV and your Backups will be playable.
set /v gamepath=%1
set /v drivepath=%2