It gave me some headaches and I sweared a lot but i got it working again.
I've flashed the boot.img, didn't resolve the issue.
I've updated the same rom over my old rom, didn't solve the issue.
I wiped cache only (to try and see if it would work) and this worked.
So it might have been a cache problem after all.
The updating android thingy was shown again only this time it said it had to update 100+ apps, and it did. After that I could use my phone again.
First things first, lets make a backup
Thanks ChickeD (i've thanked you on XDA for your help)
This can be marked as [RESOLVED]