Hello, i got this problem on my old asus mobo. After i updated to their lates bios v2301 i cannot unlock my cpu cores anymore and also any overclock makes system very unstable. I tried almost everything to rollback bios to v1202. Afudos229ES and 236ES failed also. Bupdater says it an older ver and cannot flash. AMF895 says its write protected. Is there any possible way to do this? Thank you.