How to Retrieve Z10 Backup?

Hi.

I have made backup (full backup - succesfully, no error) around 8GB from my BB Z10, current OS during the backup is 10.1.0.2312 (STL100-2).

Then I installed the Leak version few days back (26 Jul 2013 - Asia Time), no issue
But when I try to retrieve the backup, it FAILED.
Tried partial retrieve (application, media, settings) also FAILED.

I suspected this is do the OS version (not compatible or whatever reason) so I tried factory reset, but the version is different.
It's not the same as my previous version, it's a;ready 10.1.0.4687 not 10.1.0.2312, FAILED.

I tried to get 10.1.0.2312, got the version for STL100-2 and tried to retrieved, only 5% then FAILED.
Somehow during the retrieve the process ALWAYS REBOOT my Z10 so it never completed.

Now I'm stuck with 10.1.0.2312 and have no idea how to retrieve those 8GB data of mine on the backup.

Any workaround that I can try? I only need to restore media data (pic, videos) the rest I don't care.
I have tried partial retrieve but the link always shut down the Z10 during the process.

Any solution will be highly appreciated.

-sea-