Dfu mode cleaning..

[musk_gd]

I've iPhone4 which i need to downgrade 4.3.5 to 4.3.3 & jailbreak. I've tried lot of time to fix recovey by tinyumbrella 5.0 & by ired reboot loop for removing dfu mode after install downgrade 4.3.3 cooked by sw0neeze. But iphone still in dfu mode after install firmware.! Then i tried to remove dfu mode by fix recovery 7.0.1ver. dll file was pasted in fix recovery.exe folder when i try.. iPhone display some dos style code... After finish also itune showing need to recover.. iphone still black screen. How can i complete installation?