When prime doesn't crash or make your OS crash i'd say something fishy is going on. Btw, do you set your agp voltage to 1.6? I'd let it stay at 1.5v and keep the frequency on automatic. Btw, what
PSU are you using?
I've been running the vdd at 1.8v for more than 2 months so i'd say that won't be a problem. I really wouldn't be surprised if it's your
PSU that's holding you back. Almost all mobiles are able to do 2.4 ghz but you may need a little more juice. I needed 1.775v to get over 2.4ghz, and i need 1.875 for 2.55 ghz.
Ehlzi, i used this awdflash version:
http://www.epox.nl/BIOS/AWDFLASH_V8.33.zip When you try to flash, make sure you use the correct commandline switches. The ones MietmaN provided with exception of /IQ, replace that with /QI (typo)