Thank you, it will probably be a little more difficult to do this with a dead board (I don't have the tools), but I'll try....

After replacing the MB on the HP 250 G6 notebook CND8115JPR, system board 832E. I managed to change with BCU 4.0.33.1 (sp143621) the "product name" and "product serial number" but I can't to change the "product number". Product number is 2SX62EA#BED but whatever I do I always get "product information is not valid" on reboot. And always appears at the end of the SKU product number for special character(º) 2SX62EAº which is incorrect. BIOS is latest available F77 with InsydeH2O rev 5.0. CTRL+A isn't working for Advanced tab with this 250 G6. I also tried...