I have downgrade one 1920 CB motherboard and try to change my japan region to US, the problem is after patch the Keyvault i get RROD!
I have CPU and 1BL key !
2 red and 2 green LAMPS , no audio , no video!
1920 CB
Key vault type 2!
The more werd is ,4532 dash boot fine with patched keyvault !
How to solve my problem ?