MS-25 drive with Xtreme4.2a installed here. Once I got the Xbox update, it went straight to an E66 error. Soo....Onto the firmware reflash:
Original: Worked every time.
4.2a: E66
4.1a: E66
4.0a: E66
3.3: Working.
Don't ask me why it didn't like the stealthed firmware. But for whatever reason it just got plain upset. Booting with the drive plugged into the PC sata port did not cause an error, so it's deffo something to do with the drive in one way or another. I did try flashing the original firmware onto the drive, letting the 360 boot a couple of times, just in case M$ decided to play around with the original flash, re-read it from the drive, and re-patched this new original onto the above firmware. All met with the same results. Oh yeah, and I tried both KDX and X360SAM for patching in the keys. I did not try to manually patch the key. May attempt that with the latest firmware when I have a better day than yesterday. Getting it working was the up point for me last night.
If it could have went wrong, it did...... *sigh*
