Aight guys, heres the story..
Got an elite here that I modified back when BenQ wasnt hackable but only readable to get the key..
so here goes:
1) I opened up this Elite 360 and removed the Toshiba Samsung drive I installed awhile back as spoof hacked dvd-drive to replace the original BenQ drive back when hacking the Benq wasnt possible
2) I read out the dvd-key: A986C5EFDEFF0BD73D34B1F58699AFA1 and made a hacked BenQ firmware which I flashed to a BenQ drive.
3) I inserter the BenQ drive inthe Elite 360 and tested it..
4) I get error E66.. why?
5) I took out the Benq, and tried to do a new dump of firmware from the Toshiba Samsung drive that used to spoof BenQ in this Elite 360, but now the TS drive didnt wanna work.. I double checked the power cable, and I havent inserted it the wrong way.. no clue why this drive suddenly went dead..
6) I soldered off the SST chip from the TS drive and used an external programmer to read the firmware on it, and yes, it had the exact same dvd key as I used in the Benq: A986C5EFDEFF0BD73D34B1F58699AFA1
7) Im totally clueless here.. its the same dvd-key, but it still gives me E66.. Ive read somewhere that the fall update last year made some xboxes E66 without any changes to the dvd-drive had been done on beforehand. Could this be the issue here?

Before the customer came to me yesterday his XBox 360 Elite had an TS drive with Xtreme firmware spoofed to BenQ and it has been working since he came to me the first time back when BenQ was only readable and not hackable (6 months ago? dont remember)
9) His TS drive started making troubles in the neighborhood, as I figured out his dvd-lense was broken, thats why I wanted to install a original BenQ drive in his 360 elite.
10) but as stated before I get Error 66.. any clues as to why? Ive double checked the firmware, and its the same drive as is being spoofed on Toshiba Samsung, and the exact same key.. I use 360 Firmware Toolbox ver.4.5 when I check this..
it just doesnt make any sense..
Original BenQ drive before: A986C5EFDEFF0BD73D34B1F58699AFA1
Toshiba Samsung spoofed as BenQ drive hacked with Xtreme: A986C5EFDEFF0BD73D34B1F58699AFA1
customer comes to me a 2.time to get a BenQ drive in his 360 elite since his TS dvd-lense has started to not work good anymore:
BenQ drive firmware hacked with Xtreme: A986C5EFDEFF0BD73D34B1F58699AFA1
Result: E66..
can anyone help me out here? I could ofcourse try and find a working TS and flash the same image as it had before he came to me yesterday, and see if that works.. as Im betting my ass it will..