yes you can follow it exactly even if it doesnt seem like it would make a difference, I've said v11 because thats what im still using (my phone does not give me the option for v20 still, but do it with v20 it should still work, although I would have expected Nokia to have fixed OTA v20):
1.Remember this will wipe your data!
2. Update the firmware again (v11) using your computer (Not on the phone over the air)
3.Once completed turn off the phone, and now perform a hard reset/3 button salute: Hold down * (star), 3 (three), and the green call button while turning the phone on.
Now my GPS works fine fix in seconds as it should be.
1.Remember this will wipe your data!
2. Update the firmware again (v11) using your computer (Not on the phone over the air)
3.Once completed turn off the phone, and now perform a hard reset/3 button salute: Hold down * (star), 3 (three), and the green call button while turning the phone on.
Now my GPS works fine fix in seconds as it should be.