Verizon XV6900 with fast GPS lock *SOLUTION*
 

Hi all, I believe I have find a way to do this. First of all, I can't really take credit for this as I didn't invent these registry hack. All credits should go to the people in this thread: http://forum.ppcgeeks.com/showthread.php?t=32703 I simply consolidate what's been discussed, and singles out what's working and what's not.

So let's begin. First off, I am using a Verizon XV6900, installed Coke's 2.31 unlocker, and flashed the radio to the Sprint latest (3.42.30). I also cook my own rom using PPCKitchen's 20270 Vogue rom. If you need instruction on how to do this, please read the according threads.

Now with a freshly cooked xv6900 (with no other gps tweaks or software from the kitchen), I do these 2 reg hacks:

[HKEY_LOCAL_MACHINE\SOFTWARE\HTC\SUPL AGPS]
"GPSMode"=dword:00000002
change from 2 to 4
"EnablePDEIPFromNV"=dword:00000001

You may also change the ip address of the agps server as discussed in the thread I linked above, but that's the extra as changing the ip does NOT solve the lock problem.

After you make the registry edit and restart your phone, go back and check that those 2 registries are actually changed/added. I am using Resco Explorer and it's regeditor, and I find out if after I make the change and don't close down the editor before I restart, the changes are not saved. And if the regedit is not saved, it won't do anything for you, and you end up having a phone with non-working gps even you think you have changed the registry. So, before you do anything else, just double check your registry and make sure you have the correct value in it.

Now, all I do is install Google map, the latest version, and on a first lock, it takes about 20 seconds. I am now located about 50 miles from NYC and it seems to be working well indoors. Can't guarantee it works for everybody, maybe I just got lucky, but this is what I want to share with all other Verzion users.

Good luck.

Re: Verizon XV6900 with fast GPS lock *SOLUTION*
 

glad to hear it's working for you!!

Re: Verizon XV6900 with fast GPS lock *SOLUTION*
 

I'll have to reserve judgment until I try it a few times. My first pass was pretty typical of what I have been experiencing, about 2-3 minutes if I just plug it in and set it by a window to take it's time.

Now I'm using DHarvey's 2.9 VZW rom, which so far appears to be a great rom, and any of the other past roms I've tried haven't really made a difference with the GPS, so I hoping this fix doesn't get it's mojo from a clean 20270 rom only.

Although as I'm typing this, locked on 5 sats in my office...pretty sweet.

Re: Verizon XV6900 with fast GPS lock *SOLUTION*
 

let us know how it goes jack. I will try it out as well. thanks to all

Re: Verizon XV6900 with fast GPS lock *SOLUTION*
 

Doing a little testing myself I found no difference what so ever. I was using HTC GPS Tool, Windows Live Search, and Tom Tom. I would get locks with Tom Tom but it would take 3-5 minutes.

As soon as I installed and tried google maps I started getting cold locks at 10-20 seconds. If I use google maps to prime from a cold start everything else locks. Gps Tool was getting locks under 2 sec.

I may be mistaken but it sounds like Google maps will triangulate your position through the cell towers which seems help the gps as well. Just my experience.

If you haven't tried Google maps its a must

Re: Verizon XV6900 with fast GPS lock *SOLUTION*
 

No difference for me... we are discussing possible reasons for this in the other thread.

Re: Verizon XV6900 with fast GPS lock *SOLUTION*
 

Just tried it on the OMJ Verizon ROM based on 3.02 and it actually seems to be working. I changed the GPSMode from 2 to 4. The other reg setting was not in this ROM.

Gonna try it with another ROM now, but so far even after a few soft resets it is locking on very quickly so this just might be the magic ROM for my phone.

Re: Verizon XV6900 with fast GPS lock *SOLUTION*
 

made my first rom with newest kitchen 20270, installed the 3 files mentioned in other thread, added those regedits, the NV one and messed with GPSMode 1, 2, 4. then soft reset and tested each gpsmode, i got a lock in 2.2 minutes. nothing special was getting those kinda locks before with other roms. if it can get 2m locks consistantly then thats a lil different. ill test tomorrow. if anyone is scared to create new ROM to test, can try mine, although i would clear the Today screen and change to the Pure Black theme so looks cleaner, its my first so just threw a bunch of progs on there, nothing special at all. WILL ADD LINK
in the general vx6900 thread when done...
http://forum.ppcgeeks.com/showthread...=30109&page=24

Re: Verizon XV6900 with fast GPS lock *SOLUTION*
 

I tested just the registry fixes on Dharvey's 2.9 rom and the biggest difference for me was using Google maps instead of HTC GPS tool. I can consistently get a 2 minute lock outside. Inside still takes a little longer if I'm by a window.

In my office at work though, where the window is further away, I let it run 10 minutes and it never locked.

Again, not sure if it was the registry changes or not because Google was never my go-to primer, but 2 minutes beats the 5-10 i was seeing before using HTC GPS Tool before.

Re: Verizon XV6900 with fast GPS lock *SOLUTION*
 

Maybe someone can confirm if the second registry isn't there it should be created?

About to try now of a 20270 kitchen rom!

Edit: The 20270 kitchen already had me set to mode 4 :-(

Re: Verizon XV6900 with fast GPS lock *SOLUTION*
 

I tested this hack on the Ghetto 721 ROM and couldn't get a lock at all. Flashed back to the old OMJ Verizon 3.02 ROM, applied the hack and have been locking on within 30 seconds or less every time so far with WLS, Google, and Garmin. Guess OMJ's old ROM just might be the perfect ROM for the GPS on my phone right now with that hack.

Re: Verizon XV6900 with fast GPS lock *SOLUTION*
 

Since I did get it working but found the original post incomplete I would head over to the original thread for better info: http://forum.ppcgeeks.com/showthread.php?t=32703

Re: Verizon XV6900 with fast GPS lock *SOLUTION*
 

If you're still reading this thread, you HAVE to try this. The solution in this thread is only part of the fix. The solution below IS the difinitive fix, not a placebo. Verizon aGPS servers are used. Amazing. Took 10 minutes, got 8 satellites in my office on a rainy day, LOCKED.

http://wiki.xda-developers.com/index...VerizonAGPSFix

Re: Verizon XV6900 with fast GPS lock *SOLUTION*
 

hi guys,
I'm using OMJ new rom and I love it! every thing working good sofar for me. the GPS lock under 20 sec. I wan tto try the Verizon fix but I can't dail ##3424. no problem! They have a another way to make it run, but I have resco explorer and I did find \Windows\DmRouter.exe but I can’t run the command line. How can I do this with Resco ?

Re: Verizon XV6900 with fast GPS lock *SOLUTION*
 

I don't think it's necessary to read that whole thread. It will ultimately get the Verizon GPS working but.. the three added files don't do anything and all that's really necessary is to ...

- turn on "Location Setting" in Settings/Personal/Phone/Services

- in Settings/System/External_GPS/Programs, set GPS Program Port to "COM4"

- in Settings/System/External_GPS/Hardware, set GPS Hardware Port to "None", and Baud Rate to 4800.

- in Settings/System/External_GPS/Access, check "Manage GPS automatically"

- have these decimal registry entries.

[HKEY_LOCAL_MACHINE\Software\HTC\SUPL AGPS]
"EnablePDEIPFromNV"=dword:00000001
"ServerIP"="66.174.95.132"
"ServerPort"=dword:8888
"EnableGPSSmartMode"=dword:00000001
"QosPerformance"=dword:00000089
"QoSAccuracy"=dword:00000050
"TimeBetweenFixes"=dword:00000001
"NumberFixes"=dword:99999999
"GPSMode"=dword:00000002
"EnableAGPS"=dword:00000001

Then if you want super-fast and accurate GPS, run the QPST tool as descibed in http://wiki.xda-developers.com/index...VerizonAGPSFix. and then re-check the registry entries above.

GPS should work after this. If it doesn't, I'll buy your phone... at a price to be negotiated. After all, it's got a cracked case and the GPS is busted. :mrgreen:

Re: Verizon XV6900 with fast GPS lock *SOLUTION*
 

Ok I don't know what I have done but I have something over here!
I did mannage to run DMR right now in my phone and the title of it say DMR v2.21
and a list of port, Handle, Tx, Rx. I don't think I'm in the right place!

Re: Verizon XV6900 with fast GPS lock *SOLUTION*
 

You ARE in the right place. Congratulations. :)

Re: Verizon XV6900 with fast GPS lock *SOLUTION*
 

You're in the right place. I used the task manager to run DmR with the /DIAG switch. The window that comes up is just white with the Tx Rx etc. like you're saying.

Re: Verizon XV6900 with fast GPS lock *SOLUTION*
 

The Wiki actually has a cab that makes all those registry changes for you. Pretty Sweet!

Re: Verizon XV6900 with fast GPS lock *SOLUTION*
 

So it does! That's new. Very nice.

Re: Verizon XV6900 with fast GPS lock *SOLUTION*
 

ok thanks! but when I start QPST Configuration > Ports >Add anew Port my list its empty. I don't have any thing to select!

PS: I have install first WModemDriverInstaller.exe

Re: Verizon XV6900 with fast GPS lock *SOLUTION*
 

all my setting are correct in registry ... im opening up gpsviewer and still not GPS ...

I checked registry
Did Qpst Fix
Checked all setting and under phone ,,,
and installed igo8 and still nothing ... not sure how to start over or what to do

Re: Verizon XV6900 with fast GPS lock *SOLUTION*
 

i have instructions in my signature below for the whole process....

Re: Verizon XV6900 with fast GPS lock *SOLUTION*
 

Arianhojat ... i want to be able to use Igo8 ...since I dont have a data plan .. will ur instructions work with that ?? i heard of Gpsgate and Valhalla .. but dont know what they do and what i need ...

Re: Verizon XV6900 with fast GPS lock *SOLUTION*
 

See this thread or one of the parrallel threads on this. you can apparently use a "leaked" wm6.1 rom which is supposed to be locked for gps (thanks to verizons' desire to sell gps. then you can get gps unlocked by the vahalla cab which can be found here on another thread:

http://forum.ppcgeeks.com/showthread.php?t=43741

Re: Verizon XV6900 with fast GPS lock *SOLUTION*
 

ok ...shoild i downgrade ?? or just flash the "leaked rom" also let customization run on this rom ?? and then install valhalla cab?? omg im soooo confused now !!

Re: Verizon XV6900 with fast GPS lock *SOLUTION*
 

I have not done it yet but i noticed you had posted on the other threads also so i assume you got your answers. from what i read it is really simple no unlocker needed.

1. run the 6.1 upgrade from the pc (instructions are included). my understanding is that it is best to let the customizations run.
2. run the vahalla cab
3. may need a reset.

see the other threads for detailed instructions. it looks really simple.

Re: Verizon XV6900 with fast GPS lock *SOLUTION*
 

I have Verizon xv6900 with Radio 3.37.77. I Cant lock Satellites in Destinator Software