upgrading from 4.1 to 4.2 / roms

[Aladinsane]

Hi I have a generic rk30sdk with jb 4.1.1, I'm looking into upgrading the o/s and ROM just need some advice on what ROM or ROMs I need to be looking for due to the hardware in my tablet, I have taken screen shots cpu-z



View attachment 11077


I'm assuming I can backup my current ROM first in case of issues.

Thanks in advance for any advice

Justin