Hi, I put a micro SD with an Android 2.2 upgrade file into an Android 2.3 tablet. 2.2 started installing. ½ way in, the installation stopped due to "improper credentials" Now the 2.3 crashes every 20 minutes. It only can be turned off with the reset button (after multiple attempts). It won't install a 2.3 firmware upgrade (It opens the upgrade into millions of hieroglyphics). I know I deserve this. Could things get worse? Is this mistake reversible? Why does my tablet display the text of the upgrade but refuse to install it?