OK well, I have extracted the Prestigio firmware, and started to compair files. Most are identical, but of course there are a few that are differant. The BMP0.BIN contains many more images, due to the extra features like video playback icons, file format icons, stuff like that. I have only tried swapping out a few of the files in SYSTEM folder, but it always overwrites them with the original file - and deletes anything extra I stick into sub folders. In the root it leaves extra files alone. Larger images in the Nextbook files are 800x600; The Prestigio contains 800x480 images (ie. start up images)
It contains a few games, and a a couple other utils.
I may just start simple and change the boot up image to see if it will let me get away with that for now before going to nuts.
I was going to swap out the entire contents with the Prestigio firmware into both SYSTEM directories on the device, but have chickened out for now. Called the store I bought it from and they have run out of stock... go figure right before xmas
I do suspect that it will just overwrite anything I copy into the main folders with what it has stored in memory.
Still trying to figure out how it checks for a firmware on the SD card. I will start rebuilding the firmware img file with files from both devices and see where I get. Might be the RKxxIMG.CHK files... Before it lets me change anything, I believe it will have to be a complete firmware change.
Will keep anyone interested posted as I play around. I may have to hit one of the folks up that bought the Slick for a copy of the system files from that device as well since it is 800x600 as well.