Hi!
I managed to unlock my AMD Phenom II X2 555 to AMD Phenom II X4 B55 but with only 3 cores.
What i did was to unlock cores 1,2, and 4 and left 3 locked.
I didnt raise the speed it is still in 3.2 for the reason that i want to see how goes the temp of the cpu, and i observed that it is...