Ok new Version 0.5
https://www.dropbox.com/s/vrunxuq03vj0m5y/kgb_0.5.zip

Added support for GTX690
Added fix_checksum option (if you only wan't to fix the checksum and not change any other values supply "fix_checksum" as the parameter rather than "unlock")
Added kgb.cfg file. You can change the values in this file to customize your unlock values fan, voltage, power.