Hi, I beg official firmware and everything will fall into place! I used this. MyTouch1.2_OTA_FRG83D_rooted_ZA_DO (T-Mobile). Copy it to the flash drive and rename it to update, then restart your phone holding down the house, from the menu choose to apply sdcard update.zip or apply any zip from sd
Unfortunately I can not even give a link, but if necessary I can throw a Private Message!