Downloaded and used build v1.2. The proces worked well, I followed the instructions included. Overall, I find the tab somewhat slower. Another thing, I installed FBReader, MoonReader+ and Angry Birds. Few hours later, Angry Birds was not installed. After a reboot, same with Moon Reader+. I changed the sdcard (16G, speed 4), with a 8G, speed 10 adn a 4G spped 10. Same thing, apps randomly disappear. Btw, I use Total commander to browse and install things.

All sdcards were checked in Windows, filed with data and checked the data (crc) and the test was ok. I reboot in recovery, cleared data, cache and reboot, the problem still there. Any Idea? I have a spare 1G and 2G old transflash, should I check with those?

Another question: I have the backup of the original (stock) system. To flash it, I should follow the steps in your instructions?