I wanted to wait until it was confirmed working (since Commodore4Eva's previous v1 release wasn't functional) before posting it here, but now it is indeed confirmed as working! The Firmware is currently only for the Samsung SDG-605B/616T/616F DVD drives. To flash the Firmware to your DVD-ROM, you must take the drive out of the X-Box, plug it into your PC, and use the flashing program below. Once done, you can boot X-Box back-ups without the need for a mod-chip, and it is also X-Box Live compatible!
Further details are in the ReadMe.txt and HowTo.txt files included, and some additional info on this release is available below as well.
Samsung SDG-605B/616T/616F DVD drive Firmware for X-Box which boot back-ups. Flasher tool for windows included.
New in this rel: Totaly re-done to read security sector from image, will now work with all games and xbox live. Security sector moved to image. Security sector now read from PSN $fd021e (originals) AND PSN $f9fa00 (back-ups. This is the next sector after end of X-Box game data). Patched read sector routine to work with originals and back-ups. Patched debug cdb command (FF 66 05 or FF 06 05) for bank 0 rom checksum check to return original bank 0 rom checksum.
Possible X-Box Live checker. Extra debug cdb command found to unlock drive without any challenge response (FF 08 01). Tested with unmodified X-Box with copy of Halo 2 made using hot swap technique, clonecd, original dvd size was psn 30000-FCxxxxx. Added security sector to image with hex editor at psn f9fa00. Also included security sectors from games.