i9300 Unable to connect/register to network!

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http://forum.xda-developers.com – Hey guys, I'm in desperate need of some assistance here. I have an international Galaxy S3 i9300, rooted and with CWM. I flashed Criskelos XXDLH8 ROM yesterday, and I followed the instructions to the dot. The flash seemed to be problem free. However, once the phone booted and i was on the new ROM, i tried to make a call, but I kept getting an error message saying "not registered on network". I instantly freaked out, and wiped my phone+cache, and flashed stock Samsung ICS (XAALE8) via Odin. The phone booted normally into the stock ICS. But instead of seeing signal b (HowTos)