Error no when xbox won't boot?
eeprom.bin filename is case-sensitve.
For ndure basic install, the C/E file set generated by Ndure 3.1 installer will suffice.
stock msdash ver 5960 file set is needed for Ndure full install which has dual-boot and other extras.
Also cross check the serial no in the eeprom.bin against the back sticker of the console with LiveInfo beta 3 to ensure the backup was good. It should be 256 bytes.