Excellent info!!!
All directions easy to follow, 'cept in step 6 of connection to QPST I have to use ##3424# (note the trailing #).
After making the changes with QPST and in the registry (including Mode 4), I've got twice the number of satellites available now, and lightning fast locks!
Tremendous improvement over previous configuration, and well worth the effort to do by anybody wanting quality GPS on their Titan!!! Way to go!