Hi guys. Up until last week I've been using my iphone as a simple jailbreak device It's an old bootrom and I had the 4.0 firmware on it. What got me to this fked up situation was my attraction to the apps that required me to update my phone. So I did. Now it's 6.1.3 firmware, it's locked--unactivated thus no access whatsoever to iTunes, and on top of that the power button is broken, therefore no dfu mode whatsoever. I need some help please.

The methods that have failed:
--Enter DFU mode via pwned dfu method w/ firmware doesn't work, since i have no access into itunes to restore.