Hi Donirez.. Check this article from BBHelp on Facebook. It's helped many people with bricked/nuked berries. https://www.facebook.com/bbhelp#!/no...88263231183777
If it doesn't work for you then you always have your warranty to go back on.. it's 1 year.. and if you can't fix it with techniques like this, you may want to go back to your carrier as it's likely a hardware issue.
EDIT > to BBOS mods.. I hope you don't mind me referring to an external article. I'm familiar with it as I'm the primary author of it.