I'm not sure about the details. But from what I've been reading and from the people I have been talking with, it's a modified version of the original. It's basically a second batch.
I'm thinking ROMs will work because they probably wont touch the other components if it's as simple as wiring up the HDMI. The casing didn't allow for it originally.
Will this G12 made by same manufacturer like G10? (haipad/haina)?