Hello, I run the stock as shipped 3.35 rom. I never had a problem with the GPS part of the phone but I decided to try this cab to see if there is a differance. I reset my google maps which cleared my cookie's , history, pref's etc... I then ran Google Maps "Use GPS" and I did this 3 times ( resetting Google maps in between tests ) and it took 00:21sec, 00:28sec and 00:24sec with an average of toggling between 4-5 sat's. I then did this update and checked my PRI before and after to make sure I really did the update. I re ran the test 4 times the same way with resetting in between. 00:31sec ( I got worried ), 00:14sec, 00:13sec and finally 00:13sec. with an average of toggling between 2,3 and 4 Sat's (I wonder why less sat's? ) These were done while sitting at my desk inside a office building.