I have a Coby Kyros MID1042 that has a corrupted Superuser.apk I have attempted to reset to factory and to re-root using ADB. This has failed, because the file already exists and all of the rooting tools (and manual attempts) to copy the file will not overwrite the existing. I am able to boot the tablet as normal and I can access the system recovery, but I cannot use any of the custom roms because they fail signature verification. I cannot upgrade the rom manager because I can't get root. So....my question is this....does anyone have the stock rom for the MID1042 that will pass signature verification? Or any other rom for that matter that will pass?