So, I did everyyyy tutorial i found on the net on how to downgrade from 2.0 to 1.1.4 again...
After 2 days of work i found out what my problem was, and why i couldn't erase/downgrade the BB 04_05_04_G, the trick was to "jailbreak" the phone (i used iliberty+) before running the patched ziphone. Then restored back the original fw 1.1.4 with itunes and used winpwn to upload the custom fw.
** You need to get write access in order to get “patched ziphone” working, that’s why the trick is to “jailbreak” BEFORE you run it.**