SkyLine_R34_Nismo @ 07.06.19, 13:58
In both cases, the serial number can not be changed.
You can change the serial number, but not on a random set of Digits, and is written in the header.
I once soldered wifi in the fifth keygen changing 0 to 1.
And since 6 digits can be something of their own to write, even mate :))) if it is absolutely boring.