Okay, so I downloaded Chameleon AOKP 3 for s2 forums. As its based on xxlsj, I flashed the rom, then jeboo kernel, and then the modem. But as I started the phone, system ui force closes just instantly. I tried flashing the rom without modem and it worked but now I dont have calls. So as I flashed modem again, system UI force closes again. I dont know what to do now. And help will be thankful. 