I think I'm too late late to party on this one. I had installed this rom on my sisters phones several months ago, and she always got the IMS service switcher prompt and often has issues with connection and sees the promt sim not in service, though sometimes she can make calls but doesnt have data and then sometimes nothing, this happens a lot.
I've clean installed the rom a few times but same problerms.
Today Iooked at the install guide and realised the biggest faux pas, I did not upgrade the firmware! I suppose these contained updated drivers etc?
Is it possible to apply the upgrade firmware procedure on top of her installed rom and continue as normal?
It's because her phone is all setup and she doesn't want me to start again, or will I have to upgrade firmware first, then install rom from scratch?
Thanks