[Q] GPS not working

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http://forum.xda-developers.com – So here is the story: I have a Galaxy S3 with Rogers (AT&T). I decided to root my phone which I did successfully using OSX terminal and installed goo manager as the rom manager and recovery. I installed SU and Titanium backup to get ready to flash. Backed up all my system + app data and searched for a rom. The first rom I flashed was 747 greystone. Once I flashed the rom, I restored the backup from Titanium and I believe I selected to restore all, system backup included. I later on learned that I ****ed up by doing so. Anyways, since I flashed that rom my GPS hasnt worked at all. I rest (HowTos)