CX CAS出现System Error

rz1911

系统突然崩了，然后一开机就出现system error，reset也没用，电脑也连不上。CX CAS貌似还进不了急救模式。。。。据说ttl可以一救，但是什么是ttl，怎么操作我不会。求高人解答，实在不行我就出钱求维修喽

critor

Hi,

System error means :
- either that some system files are corrupt
- either that you did flash a Boot2 version incompatible with your hardware revision (for example, Boot2 version 3.1 or older on hardware revision J or newer)

If it's the first one, try to access the maintenance menu, to remove the system files (option 2), and if that's not enough to delete everything (option 4).
Then, reinstall the system.

If it's the second one, you'll need to buy/get an USB/TTL interface in order to repair the calculator.