Originally Posted by unlively
Wasn't allowing me to in cm10
That combination doesn't work on some modem. I can't tell you exactly which ones tho'.
Go here and see read up you might find something helpful.
If you google xda for i717 stock roms there's a link here with a bunch of Roms and modems that you can test.
Or basically just flash a de-bloated stock rom and see if your device can be registered on target network. Good luck!