Hey guys,
I tried the steps mentioned above.
I had the 4.5.1-134-DFP-231 on my Defy+ and wasn't able to root it.
So I downloaded the Defy-BL6Downgrade.sbf and the 4.5.2-109-DHT-22-fixed.sbf and flashed them in this order with RSD Lite 4.9
Now my screen stays completely black. But it seems to...