You can't do it! For ****'s sake, if someone says you can't do it means you can't do it, at least not at the time, it's not that I don't want to help... I would appreciate it if you actually shut up and do a little research before saying you CAN downgrade the CMT, or before using any leaked firmwares. Go get an image off of tablets-dev, downgrade, see if you can even use GPRS anymore....