I have a spare part xbox i got with no dvd-drive, so i´ve read the orig flash with no problems, and flashed xenon-flash.bin and got the dvdkey, but when i flash the orig flash back i get and error from the xbox E71
I don´t know if the xbox already had this from the start
Is there anyway i kan get another flash to try with

The MOBO is Xenon
E71 is a normal error so it may have been there before.
According to internet nerds it has somethignt o do with the ethernet port...
All it means is there is a general hardware problem or bridge in circuits.
Do the Xclamp repair, then maybe run some heat on it and some good thermal paste and you should be fine.