700mhz wall on HD4850 is smashed.

[ghost101]

Is there any specific trick what to change? I've changed Clock info 3 and 7 and nothing really worked as i expected. Should i change clock info 0 too (especially the voltage part)?

Look at some of the bioses which have been posted and copy them. You need to change 3 and 6-9. Unlock all the states as well. The best you can get is 1.200v.