My TLA624 analyzer has had a corrupted serial number since I bought it about 5 years ago. The number shows B000000 and am not sure if it left the factory that way or not. One may ask, 'Who cares?'... and I cannot give you a straight answer but in short 'I care'. So, I went off looking for a way to set the serial number to the factory assigned number which is on the back panel label. It turns out that the serial number is NOT in the battery backed NVRAM but embedded in the firmware flash. After some amount of searching and reverse engineering (I have a lot of fun doing this sort of thing), it turns out that the tool Load32.exe (Systems Folder) used to update the analyzer's module firmware has a 'Factory mode' that will allow the serial number to be changed. To force it into the Factory mode requires a password that appears to be module dependent so I patched the tool to bypass the password and now I can modify the serial number for both the TLA700 and TLA600 series analyzers.
Of course few people would really care about changing the serial number but I am willing to share the tool if anyone needs/wants to modify their numbers.
Anyway, my reason for this post was to offer this tool to whoever would like it.
Take care -
Jim