Could it be that it had a Lexmark toner cartridge installed, not a Toshiba cartridge? Or vice-versa? I'd think the EEPROM would be coded differently....
There certainly isn't a lot of detail in that bulletin. It would have been nice to know what changed. Or would that be too much like admitting there...
This thread is entertaining. I have to say that. By the way, I've learned that if KYO_OEM says something that it's wise to listen. The man knows what...