Originally Posted by Bernd_B
I don`t know if the serial number is really stored in the overwritten area because I didn`t compare it before and after modification. Normaly I would expect that this kind of information is stored in a kind of ROM area not changeable after production.
Well, you may be right. I haven't investigated where the serial number info is stored. I assumed it was in Info (mtd2), Id (mtd10) or Opt0 (mtd13), but I may be mistaken.
The DRM authorization info should be stored in Opt0.