[Q] Help needed! How to clone my existing chinese tab's OS to a same device?

Dear XDA members!

I have spent a lot of time searching for answers, but actually nothing worked. Maybe I'm a stupid idiot (at age 71), but please somebody help me!

I have bought 2 pieces of 7" android based gps from a chinese wholesale site. They are exactly the same, only their software is the difference.

I would like to clone the #1.'s whole system OS, and copy it to the #2 device.

Please let me know how can I do that! :)


Some extra info may be useful:
GPS-PAD-P108 is the brand (7")
ARM11 is the CPU and Android 2.2 is the OS.

Every helpful comment would be highly appreciated.

Best regards,
Daniel