Don't use V-klay, Use Joker 0.3.4.3., and don't check "Protect Bootcore", so you can overwrite the bootcore! Use the CF62 full flash from my FTP !
U will find here the
password, username and FTP address!
After fullflash, U must ReCalc All Keys, and all will be OK! Finally, U must set the contrast with Contrast Tool in Joker, or other program.
Joker must look like this: