Database Info

GPS files ripped from leaked JI2, flashable zip

This may be old news for many of you, but I just found this last night so I thought I would share. The flashable update .zip from the linked post worked wonders for my Captivates GPS.
Here is the original post: http://forum.xda-developers.com/showthread.php?t=782242
I flashed the file from clockworkmod recovery and my gps is markedly improved. It's not perfect but it is much better.
Just thought I would share this with those who didnt know about it.
I also attached the file that I used.
Just for references sake so that we are comparing apples to apples, I am using JH7, rooted with unhelpfuls 1.4.1 kernel.

my mistake. i reset the supl to auto config. I also realized that clockwork uses the internal SD as default so i was reinstalling my root update.zip i still had on the internal. I was trying to install without clockwork in the beginning so i just renamed it to update.zip and threw on my external 16gb but it was installing update.zip from my internal. It works great and i have a great lock within 6 seconds when I have never seen a lock on my device. I even rebooted a couple times to get my lock right away.
Thank you again!
Stock AT&T 2.1 rom with root, removed bloatware, clockwork, and sideload mod

Thank you for making this thread. I do not follow the vibrant section too often so I was unaware of this. Thanks for bringing this to my attention OP

Awesome! Glad I could help even a few people. I knew I couldnt be the only one who didnt know about this!

just an update. Overnight, the GPS magically stopped working again. I havent been able to get a lock at all and have a max of 4 sat. connected at once on a sunny clear day. Any ideas?

NFauteux said:
just an update. Overnight, the GPS magically stopped working again. I havent been able to get a lock at all and have a max of 4 sat. connected at once on a sunny clear day. Any ideas?
Click to expand...
Click to collapse
Is wifi on? Wifi on its way hard too lock. Or try the Ms based trick a few pages back or the thread itself .. if wifi was on, exit maps or GPS test completely and turn GPS off, then turn GPS back on and try again......

smashpunks said:
Is wifi on? Wifi on its way hard too lock. Or try the Ms based trick a few pages back or the thread itself .. if wifi was on, exit maps or GPS test completely and turn GPS off, then turn GPS back on and try again......
Click to expand...
Click to collapse
seriously? that's a freakin hassle and half

pmpntl said:
seriously? that's a freakin hassle and half
Click to expand...
Click to collapse
Really? Turning off wifi from the get go is a hassle ? Just pull down turn it off, done. Just if you do it while its on gotta exit and do again. Semi annoying but not and a half.lol

Im starting to think that my phone is damaged I have never seen a lock, I have used every method and nothings works
Sent from my SAMSUNG-SGH-I897 using XDA App

Wow this worked great on my phone. Locked on quickly and gave me the best accuracy I've seen. Gives me hope on an official update for our captivates.
Sent from my SAMSUNG-SGH-I897 using XDA App

NFauteux said:
just an update. Overnight, the GPS magically stopped working again. I havent been able to get a lock at all and have a max of 4 sat. connected at once on a sunny clear day. Any ideas?
Click to expand...
Click to collapse
Mine stopped working as well as when I first flashed but still works much better.
I used the LbsTestMode hack to change to the supl.google.com settings and it helped it a little more. Like I said in the original post, this isnt perfect, but its still an improvement over stock and it gives me hope that this is correctable via software. I had all but convinced myself that the hardware and/or design was faulty.
-D

I dont remember what i did but the gps is now working again and it works great, even from inside sitting near a window. I know that it is a result from these files posted. I also set all my settings to :
Application Settings
session type: Tracking
Test Mode: S/W Test
Operation Mode: MS Based
Start Mode: Hot start
Gps Plus: On
Dynamic accuracy: on
accuracy : 100
skyhook: on
pc tool: off
SUPL/CP Settings
Server FQDN: auto config
SUPL Secure: On
AGPS Mode: SUPL
I hope these settings can help someone else. I dont know why my gps cut out before but after flashing the OP files and changing settings to these, I can get a lock indoors without WIFI on.
Also i never have wifi on unless I am in the house using youtube or downloading stuff.
Thank you again for the files! I was using my GPS all day with no issues. I owe you big time because my phone never saw a satellite lock before flashing these files.
---------------------------------------------------------------------
EDIT
---------------------------------------------------------------------
I was having issues again today and changed to supl.google.com with 7276 i believe and it works perfect now and has been all day. I lock within 5 seconds of opening google maps. I now dont care if they ever release a GPS fix because mine is perfect and I wouldnt change it.

[TEMP][FIX] Potential GPS fix Froyo. 12/02/10

So after reading around and trying things and discovering that LbsTestMode.apk doesnt exist for our phone, I just editted the file directly.
So without futher ado follow the below steps to see if it fixes YOUR gps.
MOST of the credit for this goes to the guys in the captivate and vibrant forums.
1. Copy the following into a file named secgps.conf
Code:
#Generated by GpsLocationProvider.
#Thu Dec 02 13:09:21 EST 2010
SSL=1
SSL_TYPE=0
POSITION_MODE=7
OPERATION_TEST_MODE=0
ACCURACY=50
SESSION_TYPE=1
SERVER_MODE=0
ENABLE_NMEA=false
START_MODE=HOT
GPS_LOGGING=0
AGPS_MODE=0
DYNAMIC_ACCURACY=1
ADDRESS_MODE=1
TIME_BTW_FIX=2000
OPERATION_MODE=MSBASED
USE_DEFAULT=true
DYNAMIC_ACCURACY_VALUE=50
SUPL_PORT=7276
ENABLE_XTRA=true
SUPL_HOST=supl.google.com
NUM_OF_FIX=999999999
TIMEOUT=3600
2. adb push secgps.conf /sdcard/secgps.conf
3. adb shell
4. su
5. remount rw
6. cat /sdcard/secgps.conf > /data/gps/secgps.conf
or copy it with root explorer of esfile explorer
7. reboot
Secondary fix to help speed up gps locks.
Code:
Use Root Explorer or some other method (I use Root Explorer as it has a built in Text Editor and automatically backs up the altered file.) to go to here:
system/etc/gps.conf
Use the text editor to alter the gps.conf file to this (if you are in the US):
NTP_SERVER=us.pool.ntp.org
XTRA_SERVER_1=north-america.pool.ntp.org
XTRA_SERVER_2=http://xtra2.gpsonextra.net/xtra.bin
XTRA_SERVER_3=http://xtra3.gpsonextra.net/xtra.bin
Now go to some place you should normally get a gps signal and launch maps.
this should correct it.
Couple of notes, this file appears to be dynamically generated, so if we can someone get a LbsTestMode.apk that works with the epic, or a script to copy the file over cron based through to make sure the settings stick that would be best.
if your gps stops working as it did after the fix, simply copy it back to /data/gps/ and reboot.
This is entirely a beta attempt and may not correct anything..
this is also for ADVANCED people, do not bother posting if you dont understand how and what you're doing above as we're not here to hold hands we're here for a solution.

art3mis-nyc said:
So after reading around and trying things and discovering that LbsTestMode.apk doesnt exist for our phone, I just editted the file directly.
So without futher ado follow the below steps to see if it fixes YOUR gps.
MOST of the credit for this goes to the guys in the captivate and vibrant forums.
1. Copy the following into a file named secgps.conf
Code:
#Generated by GpsLocationProvider.
#Thu Dec 02 13:09:21 EST 2010
SSL=1
SSL_TYPE=0
POSITION_MODE=7
OPERATION_TEST_MODE=0
ACCURACY=50
SESSION_TYPE=1
SERVER_MODE=0
ENABLE_NMEA=false
START_MODE=HOT
GPS_LOGGING=0
AGPS_MODE=0
DYNAMIC_ACCURACY=1
ADDRESS_MODE=1
TIME_BTW_FIX=2000
OPERATION_MODE=MSBASED
USE_DEFAULT=true
DYNAMIC_ACCURACY_VALUE=50
SUPL_PORT=7276
ENABLE_XTRA=true
SUPL_HOST=supl.google.com
NUM_OF_FIX=999999999
TIMEOUT=3600
2. adb push secgps.conf /sdcard/secgps.conf
3. adb shell
4. su
5. remount rw
6. cat /sdcard/secgps.conf > /data/gps/secgps.conf
or copy it with root explorer of esfile explorer
7. reboot
Secondary fix to help speed up gps locks.
Code:
Use Root Explorer or some other method (I use Root Explorer as it has a built in Text Editor and automatically backs up the altered file.) to go to here:
system/etc/gps.conf
Use the text editor to alter the gps.conf file to this (if you are in the US):
NTP_SERVER=us.pool.ntp.org
XTRA_SERVER_1=north-america.pool.ntp.org
XTRA_SERVER_2=http://xtra2.gpsonextra.net/xtra.bin
XTRA_SERVER_3=http://xtra3.gpsonextra.net/xtra.bin
Now go to some place you should normally get a gps signal and launch maps.
this should correct it.
Couple of notes, this file appears to be dynamically generated, so if we can someone get a LbsTestMode.apk that works with the epic, or a script to copy the file over cron based through to make sure the settings stick that would be best.
if your gps stops working as it did after the fix, simply copy it back to /data/gps/ and reboot.
This is entirely a beta attempt and may not correct anything..
this is also for ADVANCED people, do not bother posting if you dont understand how and what you're doing above as we're not here to hold hands we're here for a solution.
Click to expand...
Click to collapse
Lol... i'll hold ur hand. Plus it seems that the GPS locks faster now. but like u said it's temporary

I was playing around with this at work yesterday (also saw this on the captivate forum), but didn't have time to give it a test last night.
Here is a reference for more info on the captivate discussion http://forum.xda-developers.com/showthread.php?t=789383
Edit 20101203:
There are four major things going on in this fix, so lets talk about each one separately.
============================================================
1) Operation Mode - Switch to MSBASED
Standalone - The handset has no connection to the network, and uses only the GPS satellite signals it can currently receive to try and establish a location.
MS Based - The handset is connected to the network, and uses the GPS signals and a location signal from the network.
============================================================
2) Switching from WARM to HOT
Should make getting a fix faster provided you have cache money.
##GPSCLRX# if you aren't feeling as fresh as you would like to be
============================================================
3) SUPL server change for SUPL
Broadcom's Hosted Secure User Plane Location (SUPL) Location Platform (SLP) offers Mobile Network Operators (MNO) and service providers all the functionality of the most precise wireless location technologies including Assisted GPS (AGPS) without the need to make investments in Location Based Services (LBS) infrastructure.
SUPL is the emerging standard developed by the Open Mobile Alliance (OMA) for AGPS using existing IP networks as the underlying data bearer. SUPL lends itself very well to a hosted
solution where the vendor takes responsibility for providing a specified quality of service, assured by Service Level Agreement.
Doing a quick pingarooski, the google SUPL servers seem to be faster
============================================================
4) Time server
Do-whatcha-like but if you are in the US, the pool us.pool.ntp.org is probably going to be the fastest. But hey be my guest. If you want to run a time server from your phone you could always put in localhost.

How did you switch from hot to cold start? The old dialer code doesn't work in froyo.
Is this file erased with #gpsclrx## dialercode?

Hi, I have a broken GPS. Im running the Froyo Stock(ish) ODIN Tar that has the built in root and clockwork.
I was running 2.1 Epic Experience before and GPS worked fine. I wiped my data and cache and then used ODIN to flash the DK17 Froyo.
My GPS has not worked and I have not gone back to other roms just to perform a workaround.
I did try as you suggested with the secgps.conf file but it still will not give me a lock.
Thanks for all your efforts on this.. I really want GPS working
Brian

Gps would not work at all, before.
This fixes it for me.
For those wondering, it didn't work until I did both fixes. do both fixes...
Sent from my SPH-D700 using XDA App

brian_hoffman said:
Hi, I have a broken GPS. Im running the Froyo Stock(ish) ODIN Tar that has the built in root and clockwork.
I was running 2.1 Epic Experience before and GPS worked fine. I wiped my data and cache and then used ODIN to flash the DK17 Froyo.
My GPS has not worked and I have not gone back to other roms just to perform a workaround.
I did try as you suggested with the secgps.conf file but it still will not give me a lock.
Thanks for all your efforts on this.. I really want GPS working
Brian
Click to expand...
Click to collapse
I had this issue. I put on stock..got a gps fix. the applied a froyo ROM Quantum over my stock..got another GPS fix. THEN I wiped the froyo ROM.
All good now. I use ##GPSCLRX# to reset the GPS if it's taking to long too lock. I get lock in about 10 seconds now. 9 satellites and more.

ZenInsight said:
I had this issue. I put on stock..got a gps fix. the applied a froyo ROM Quantum over my stock..got another GPS fix. THEN I wiped the froyo ROM.
All good now. I use ##GPSCLRX# to reset the GPS if it's taking to long too lock. I get lock in about 10 seconds now. 9 satellites and more.
Click to expand...
Click to collapse
I'm hesitant to format my phone.. I just got it up and going and customized and synced. Not that its THAT big of a pain..
I guess I just hoped I could run this build till the official froyo comes out without re-doing everything.
On a side note, I did try both the above fixes as it was mentioned that it worked for someone else.
I also tried your ##GPSCLRX# to clear my GPS.. But it didn't work.
At this point it may be best to start over again.
I tried downloading some GPS test app, flashing some update.zip (gps Fix) from a different thread, manually changing the files mentioned here and clearing my GPS from the dialer code.
I'm feeling defeated, I'm not sure why we need to lock in a from a different modem. I'm guessing it generates some file? that sticks on a system upgrade?
I really hope this gets resolved the right way.

My GPS was working wonderfully using Mammon's Froyo 1.0.3 (I went through a bit of a process inspired by the first Froyo GPS fix post, involving flashing to DI18 and getting a lock before flashing Froyo)
Then today the nav program started to lose the GPS signal (going back to maps or toggling the GPS off and on seemed to get the signal back, but it was still flaky). I tried parts of this mod (I left start mode on warm and operating mode on standalone, going to experiment with each setting one at a time to look for any noticeable changes)
So the only thing I changed so far is the uml server and port, and while I am getting roughly the same performance as before the change, now my position is off - it used to be almost spot-on when reporting anything lower than 4m accuracy, but now it claims 1m and is still a good 15 feet (roughly 4 - 5m) north east of my actual position. It's still plenty accurate enough for navigation, so this is simply an observation - the google server appears to be slightly off, whether it's an (admittedly tiny) location error, or the maps aren't quite in sync with the GPS data on the server (I don't know much at all about how GPS works, so if anyone can explain the uml's role in the locating process, or anything else about how GPS works under the hood, please enlighten us)
That being said, I do think that I'm getting a lock ever so slightly quicker, but I was already getting a fairly rapid lock pre-mod so it's hard to be certain.

fastmikey1969 said:
How did you switch from hot to cold start? The old dialer code doesn't work in froyo.
Is this file erased with #gpsclrx## dialercode?
Click to expand...
Click to collapse
there is no dialer code(or associated program) in froyo on the epic for some reason hence the need to automate a cron to replace this file once it's been editted.
you can switch it just by editing the file directly and changing but im still not sure under what circumstance s the file gets regenerated dynamically.

brian_hoffman said:
I'm hesitant to format my phone.. I just got it up and going and customized and synced. Not that its THAT big of a pain..
I guess I just hoped I could run this build till the official froyo comes out without re-doing everything.
On a side note, I did try both the above fixes as it was mentioned that it worked for someone else.
I also tried your ##GPSCLRX# to clear my GPS.. But it didn't work.
At this point it may be best to start over again.
I tried downloading some GPS test app, flashing some update.zip (gps Fix) from a different thread, manually changing the files mentioned here and clearing my GPS from the dialer code.
I'm feeling defeated, I'm not sure why we need to lock in a from a different modem. I'm guessing it generates some file? that sticks on a system upgrade?
I really hope this gets resolved the right way.
Click to expand...
Click to collapse
no real reason to format the phone, give the above settings a try thoruhg whatever file explorer you use and see how it works.
if nothing else it may work for a few hours

The "gps fix" post by BThomas22 does some of this (modifies the /system/etc/gps.conf). I'm curious about "secgps.conf" as it doesn't exist on the filesystem at all typically, and there's already a "gps.conf" with those settings in it. Are you sure that tool didn't just do backups to a secgps.conf or something? Are we sure this file is actually read?
This also seems more likely to help with slow locks and cache issues some people are facing, but is almost certainly not the solution to the no GPS at all issue some people are having after flashing a froyo modem.
http://forum.xda-developers.com/showthread.php?t=839710 has an inexplicably working solution (verified by several people including myself) for at least some of the people who get no lock ever. If you're on a froyo modem, install "GPS Status" or "GPS Test" from the market and if you don't get any sats in view, you'll likely be fixed by those steps.
I haven't had the cache/slow issue, so I can't speak to whether this helps that or not, but the AGPS parts seem as though they would.

drunix said:
The "gps fix" post by BThomas22 does some of this (modifies the /system/etc/gps.conf). I'm curious about "secgps.conf" as it doesn't exist on the filesystem at all typically, and there's already a "gps.conf" with those settings in it. Are you sure that tool didn't just do backups to a secgps.conf or something? Are we sure this file is actually read?
Click to expand...
Click to collapse
Nope not at all.
This also seems more likely to help with slow locks and cache issues some people are facing, but is almost certainly not the solution to the no GPS at all issue some people are having after flashing a froyo modem.
http://forum.xda-developers.com/showthread.php?t=839710 has an inexplicably working solution (verified by several people including myself) for at least some of the people who get no lock ever. If you're on a froyo modem, install "GPS Status" or "GPS Test" from the market and if you don't get any sats in view, you'll likely be fixed by those steps.
Click to expand...
Click to collapse
That method has also not worked for a lot of people as well, so it's rather hard to say. I suspect that the only reason the modem flash "works" is because it caches data that the dk17 modem then reads as far as sat position and other things to basically give directions without actually "locking". No sats in view could also mean you just dont have a good line of site either(happens to me at work until i move near a window)
I haven't had the cache/slow issue, so I can't speak to whether this helps that or not, but the AGPS parts seem as though they would.
Click to expand...
Click to collapse
And the ntp part is meant to speed up caching and lock but the rest of it is more to configure it correctly.
I don't have the gps problem at all so couldnt say for sure.
PS: did you try this on your phone completely without other gps "fixes" or did you just come in to post a rather meaningless post about a bunch of stuff we're already aware of and attempting to dealing with, and not offer any solution or any new information or even just results?

brian_hoffman said:
I'm hesitant to format my phone.. I just got it up and going and customized and synced. Not that its THAT big of a pain..
I guess I just hoped I could run this build till the official froyo comes out without re-doing everything.
On a side note, I did try both the above fixes as it was mentioned that it worked for someone else.
I also tried your ##GPSCLRX# to clear my GPS.. But it didn't work.
At this point it may be best to start over again.
I tried downloading some GPS test app, flashing some update.zip (gps Fix) from a different thread, manually changing the files mentioned here and clearing my GPS from the dialer code.
I'm feeling defeated, I'm not sure why we need to lock in a from a different modem. I'm guessing it generates some file? that sticks on a system upgrade?
I really hope this gets resolved the right way.
Click to expand...
Click to collapse
I had the same/similar issue with GPS not working at all. Sound 0 satellites. Tried all of the stuff, but the only thing that I found to fix it was to redo the ODIN flash of froyo. I hope that helps.

ZenInsight said:
I had this issue. I put on stock..got a gps fix. the applied a froyo ROM Quantum over my stock..got another GPS fix. THEN I wiped the froyo ROM.
All good now. I use ##GPSCLRX# to reset the GPS if it's taking to long too lock. I get lock in about 10 seconds now. 9 satellites and more.
Click to expand...
Click to collapse
I get a good lock as well(most of the time). How do you see how many satellites are locking? I get accuracy reading of 8ft but nowhere does it state how many satellites...

1deviant said:
I get a good lock as well(most of the time). How do you see how many satellites are locking? I get accuracy reading of 8ft but nowhere does it state how many satellites...
Click to expand...
Click to collapse
get the app GPS Status, that will show ya all the infos

art3mis-nyc said:
The "gps fix" post by BThomas22 does some of this (modifies the /system/etc/gps.conf). I'm curious about "secgps.conf" as it doesn't exist on the filesystem at all typically, and there's already a "gps.conf" with those settings in it. Are you sure that tool didn't just do backups to a secgps.conf or something? Are we sure this file is actually read?
Nope not at all.
Click to expand...
Click to collapse
If you delete secgps.conf and reboot, the file is regenerated. This would seem to indicate that it is being used, as it is recreated upon reboot if it is missing. If it exists, it isn't overwritten however.
Also, gps.conf does not have the same settings as secgps.conf.

plapczyn said:
If you delete secgps.conf and reboot, the file is regenerated. This would seem to indicate that it is being used, as it is recreated upon reboot if it is missing. If it exists, it isn't overwritten however.
Also, gps.conf does not have the same settings as secgps.conf.
Click to expand...
Click to collapse
Phil, you're very smart! Thanks for the info!

chillaxtodamax said:
Phil, you're very smart! Thanks for the info!
Click to expand...
Click to collapse
Thanks Yuhan. I was waiting all semester for you to tell me that.

plapczyn said:
Thanks Yuhan. I was waiting all semester for you to tell me that.
Click to expand...
Click to collapse
No problem. See you in homeroom on Monday!

Bad GPS lock with WIFI off.

My GPS stopped doing accurate readings when i flash roms with the ziggy gps fix. the only way that it gets accurate(within 20m) is with wifi on and connected, if its off it says accurate within 3700m. Thats not too accurate if i might say, anyone else having this problem/ found a fix for it?

Check the following thread:
http://forum.xda-developers.com/showthread.php?t=1025631

I've done that, and it knocks my gps off completely. Any clue why its attached to Google location services?
Sent from my ADR6400L using XDA App

Interesting, I attempted the same thing and I am unable to get a lock when I disable the Google Location Services.
I'm running on Das BAMF 1.3.2 with the kernel update 3a which includes gps fix/enhancement from Ziggy.
I've been testing how quick I get locks when using the Navigation and I am still seeing a considerable amount of time before it finds a GPS signal. I've also used GPS Status from the Market to reset and download GPS data but I haven't really seen a difference.

DRGilroy said:
Check the following thread:
http://forum.xda-developers.com/showthread.php?t=1025631
Click to expand...
Click to collapse
Used this method and Ziggy's GPS mod and I get a lock within seconds as opposed to 10 minutes. If I turn on Google Services it goes back to a 10 minute lock time so I think it has more to do w/ the Google Services rather than modifying the GPS Config through Root Explorer.
Edit: I will add that initially my phone will say "GPS Location is Currently Unavailable" and 2 seconds later it gets the GPS lock /shrug

Well mine stays searching when the Google location is off, never gets a signal. What is the stock gps server so I can switch it back?
Sent from my ADR6400L using XDA App

Well I just found that as long as WiFi is toggled on, the gps will lock on no matter if there's a connection or not. Tied into he WiFi somehow?
Sent from my ADR6400L using XDA App

Joanni said:
Well I just found that as long as WiFi is toggled on, the gps will lock on no matter if there's a connection or not. Tied into he WiFi somehow?
Sent from my ADR6400L using XDA App
Click to expand...
Click to collapse
That is odd that WiFi affects the GPS locking. I'm trying to find anything I can on this. "Searching for GPS..." in Navigation is annoying as heck.

I also had a sneaking suspicion that toggling wifi on and off caused gps lock issues, I was using another rom at the time, but for some reason, all of those problems ceased when I flashed TeslaCoil and completed the gps conf fix.
Not withstanding, gps should lock quickly using only stand alone, and right now, my gps works splendidly
Sent from my Thunderbolt using Tapatalk

Where can I find that gps conf fix at? I wanna give that a shot.
Sent from my ADR6400L using XDA App

Joanni said:
Where can I find that gps conf fix at? I wanna give that a shot.
Sent from my ADR6400L using XDA App
Click to expand...
Click to collapse
You can grab it here:
Improve GPS lock - credit Ziggy471
It edits the gps.conf so the NTP_SERVER=us.pool.ntp.org

That comes default on the roms I use tho. Still attached to WiFi switch. What's the closest lock you can get with your gps?
Sent from my ADR6400L using XDA App

i was having GPS issues with the last two bamf kernels. google maps seemed to lock onto my location after a few seconds or a minute, but other apps that tried to use the GPS would never lock on. i noticed when you go into google mapls, the GPS icon/animation appears on the status bar.
the GPS icon would never appear for other apps that tried to use GPS when using the bamf kernels.
with the stock TB kernel, all is well.

Ok, gps is definitely tied in to WiFi. Without WiFi on its 3400m away and with it on is within 20-50m. That only happened with the ziggy fix so maybe if anyone could show me the original settings for the stock gps server file I could change back and forth and test what the problem is.
Sent from my ADR6400L using XDA App

So I rewrote the gps.conf back to the original north-america setting and that fixed the problem. Any clue why ziggys rewrite of a word in that setting would mess it up so much? And how is it ppl are supposedly getting improvements with that, like what exactly?
Sent from my ADR6400L using XDA App

I don't know what the rhyme or reason would be for this gps issue, because it's so random, there is no pattern to this mess:
1. Got the phone, gps worked great.
2. Rooted phone, still worked great.
3. Flashed first rom, Virus to be exact, still worked great.
4. Several days later, with no rhyme or reason, I noticed that Cardio Trainer had not picked up location
5. Factory reset, problem still persisted, could not lock on to any birds, confirmed with gps test app.
6. Flashed CWR of stock rom post root, still not working.
7. Flashed RUU stock from fastboot, working again perfectly.
8. Have flashed 2 non stock roms since, BAMF 1.3.1 and first TeslaCoil (current) and gps still working perfectly
I can't think of what could have possibly caused this, but now that gps has been stable for about one week and I haven't been using wifi, over the weekend I'm going to toggle between wifi and 3g and see if it causes any issues.
Sent from my Thunderbolt using Tapatalk

I'll be trying the new Das BAMF 1.4 to see how it behaves. Wish me luck!

Joanni said:
Ok, gps is definitely tied in to WiFi. Without WiFi on its 3400m away and with it on is within 20-50m. That only happened with the ziggy fix so maybe if anyone could show me the original settings for the stock gps server file I could change back and forth and test what the problem is.
Sent from my ADR6400L using XDA App
Click to expand...
Click to collapse
Joanni, I'm having the exact same issue that you've been having. With Google services on, I get the wide area. If I turn it off, I get nothing. The only way I get a lock is with WiFi on. I'm currently running Virus ROM.
I know enough to be dangerous when it comes to digging into my phone. I generally just follow well polished instructions. How would one go about trying your fix?

GutterIsATool said:
Joanni, I'm having the exact same issue that you've been having. With Google services on, I get the wide area. If I turn it off, I get nothing. The only way I get a lock is with WiFi on. I'm currently running Virus ROM.
I know enough to be dangerous when it comes to digging into my phone. I generally just follow well polished instructions. How would one go about trying your fix?
Click to expand...
Click to collapse
Joanni just edited the gps.conf file to read NTP_SERVER=north-america.pool.ntp.org
That was the original setting. It has been said that changing the setting to us.pool.ntp.org has fixed peoples GPS locking issues but in my testing I found no benefit either way. What I have found, is that turning WiFi on will enable the GPS to have better accuracy in finding your location (20 meters to 50 meters in my case). This is exactly what the popup says, the first time you launch Google Maps.
If you wanted to check what your gps.conf file has set as the server, you can use Root Explorer and browse to /etc/gps.conf
There is also an app in the Market called FasterFix that will change the server to north-america.pool.ntp.org for you.

[TIP] Have you tried MS Based aGPS to help gps lock?

The following seemed to have helped some people on my post on AF so figured I'd post it here as well.
If you're still having GPS issues in an area where you have data coverage, and you've tried changing the gps.conf and possibly updating your libraries as noted in other threads, have you tried changing your GPS settings to MS Based instead of the default of "Standalone"?
From wikipedia:
Mobile Station Based (MSB) - In MSB mode A-GPS operation, the A-GPS device receives ephemeris, reference location, reference time and other optional assistance data from the A-GPS server. With the help of the above data, the A-GPS device receives signals from the visible satellites and calculates the position.
You can do that by doing the following, as noted in my previous post:
My GPS was really taking a long time to lock. Usually 10 minutes or so using GPS Status before it would lock. I tried both just using gps only and then also with wireless network and it still took a long time. So I updated the lbstestmode.apk to use MS Based and the gps.conf file that was mentioned earlier and now I get a lock in GPS Status in about 8 seconds from a cold boot using only the GPS with no wireless network.
If anyone wants to try, I've attached a flashable zip. I took the zip posted by merkuralex earlier in the other gps thread (thanks merkuralex) and added the lbstestmode.apk posted in this SDX thread:
http://forum.sdx-developers.com/index.php?topic=13593.0
The following flashable zips are attached:
lbstestmode_mt_gps_conf.zip - contains the gps.conf file from the other thread + the lbstestmode.apk file.
lbstestmode.zip - contains only the lbstestmode.apk
I'll repost the instructions here (thanks to cornaljoe on sdx for the actual instructions):
Pre-1. Flash the one of the attached zips in CWM first to install the lbstestmode.apk (or just copy the lbstestmode.apk into /system/app/ if you'd rather) and then reboot your phone.
Follow these directions:
1. After boot create a shortcut to Activities -> LbsTestMode -> .LbsTestMode
You may have to install LauncherPro if your launcher doesn't support the activities option under shortcuts. Once installed all launchers will have this option.
My note: Just an FYI, LauncherPro can be downloaded from the Market for free if you don't already have it. Or any other app that allows you to create shortcuts (such as AnyCut I think can also do that)
2. Start LbsTestMode and goto the application settings and set it to MS Based and press back until you exit app.
3. Reboot phone and then use GPS Status under a clear sky until you get a lock.
The main thing to pay attention to is the numbers labeled Error(m) and Fix/Sat in the lower corners of the compass.
Error(m) is the accuracy of your location in meters which shows after you get a lock. Fix/Sat is the number of satellites locked and in view prospectively.
In GPS Status, you can do the following to force aGPS data to download:
3A. Click Menu --> Tools --> Manage A-GPS state --> Reset . This will clear all previous A-GPS data.
3B. Click Menu --> Tools --> Manage A-GPS state --> Download. This will download fresh A-GPS data.
3C. Let GPS Status lock. The first time will take longer as your gps/phone syncs the data.
After you get a lock, you can try powering down your phone and then restarting and see if your lock is faster from a cold start.
This may or may not help you. All I can say is that changing to MS Based helped my gps lock time--I usually have data access where I am.

I have done this, and it works perfect!

Cloudy and raining here today. I will definitely try it. Quick question though, you saying use either zip or use one before the other? I'm not really clear on this.
Also do You have to keep the short cut?

You need to apply the zip first (in CWM) or else you won't have the option to create the shortcut

Wich one, there's 2 zips? I've got it all installed and working. Even though its cloudy, I got instant lock on. I'll test it again tommarow when I go out of town. So far so good though.
Edit: indoors is about 10 sec lock on. Great find OP. Has anyone posted this over at hofo? Another question, will clearing data cache from apps hurt it any?
Sent from my MOTWX435KT using XDA App

Everything went great today. I left my phone off all night so it could get a solid cold start this morning. Its cloudy and rainy again today too. I hit the road this morning and fired the GPS up and it locked in about 15 seconds. Great job on this fix. Also since then it has been instant lock times when i try it.
Sent from my MOTWX435KT using XDA App

tcross8361 said:
Everything went great today. I left my phone off all night so it could get a solid cold start this morning. Its cloudy and rainy again today too. I hit the road this morning and fired the GPS up and it locked in about 15 seconds. Great job on this fix. Also since then it has been instant lock times when i try it.
Sent from my MOTWX435KT using XDA App
Click to expand...
Click to collapse
Which ZIP did you use? I used the lbstestmode_mt_gps_conf.zip

idbl_fanatic said:
Which ZIP did you use? I used the lbstestmode_mt_gps_conf.zip
Click to expand...
Click to collapse
Actually I installed them both...lol But that's the last one I used.
I did have a bit of a hiccup on my way home. After lunch I turned my phone off. When I got back on the road 3 hours later I turned it back on and started up Navigation. It took a minute or so on the first lock. I exited out of Navigation and waited 20 minutes or so. I started it up again and it took about 30 seconds. Every time after that it was instant lock. Still very impressed. It was very cloudy and rainy today though. I was getting 1.1 mb down and 500 kb up today also. I would post this over at HoFo for all the nay sayers, but I wouldn't be able to answer any technical questions if anyone had them.
This place is starting to remind me of Seatle, rain every day...lol. I guess Fall is here to stay.

You are wasting your time.
I have traced this code extensively. For those who are unaware the GPS works on RPCs, which are internally processed by the kernel and passed to the chipset.
The chipset on this phone does not know how to handle AGPS requests - XTRA requests to inject the time (NTP time) and the orbital data are flatly refused.
You can set whatever you want, the data will never get to the chip. The Froyo base load intentionally discards such attempts and never sends them. If you load Gingerbread (and build it from source, as I have) and FORCE it to be sent it will return an error every time.
The problem appears to be in the silicon and/or the radio driver itself, which there is no source for. If someone's going to fix this, it's going to be at the radio interface level - not in user space.
My CM7 port is capable of cramming the data in there but it's turned off right now as when I enable it there's a fairly decent chance that the consequence of trying to do so is that the radio locks up and forces a watchdog reset (that is, a reboot on the phone)

GPS doesn't lock..

Good evening guys-
After updating from ICS to JellyBean, my gps cannot find or lock onto any satellites.
If I enable wifi, its accurate to 20meters.. If not, it won't lock even after 15 minutes.
Any help is greatly appreciated-

mine has been similar in PA2.00 and CM10.
It actually will lock after a long time. Sometimes up to 30 minutes.
Interested in any answers... I noticed in the gps.conf file agps appears to be off. I don't know if that is the issue.
Unfortunately searching for a fix just reveals too much information with a lot of supposed fixes, but no consensus so far as i can tell.

brian Marshall said:
mine has been similar in PA2.00 and CM10.
It actually will lock after a long time. Sometimes up to 30 minutes.
Interested in any answers... I noticed in the gps.conf file agps appears to be off. I don't know if that is the issue.
Unfortunately searching for a fix just reveals too much information with a lot of supposed fixes, but no consensus so far as i can tell.
Click to expand...
Click to collapse
Actually agps was turned off to improve lock times...some people noticed no difference with it off, others noticed huge improvements with half the lock time
You can change it to true, then wipe cache and dalvic cache in recovery and see if it makes a difference
Sent from my SGH-I997 using Tapatalk 2

mg2195 said:
Actually agps was turned off to improve lock times...some people noticed no difference with it off, others noticed huge improvements with half the lock time
You can change it to true, then wipe cache and dalvic cache in recovery and see if it makes a difference
Sent from my SGH-I997 using Tapatalk 2
Click to expand...
Click to collapse
is that a 'go ahead and try it, it wont work, but go ahead and try it anyway' ?
It seems like a lot of people are having problems with GPS in jellybean, and some aren't. There's so many 'this worked for me' solutions, but I'm starting to think it's coincidence.
Someone mentioned installing and running copilot once. Did that. it didn't work. Without root permissions what could it really change to improve anything?
I ran Faster Fix. It edited my gps.conf file (which it doesn't tell you that it does) It didn't help. it might have made it slightly worse.
I found a few other gps.conf files for jellybean ROMs, but haven't tried those yet.

This is how we learn and share our info, by trying. Just make a back up of anything that you want to change or replace.
GPS works perfect on my PA Jelly Beaned Infuse. First I ran GPS Test, it took a good twenty minutes if not more for it's first lock.
But now, I get a lock in a few seconds.
GPS Test, is free in the market.
Planning my escape!

GPS Test has kicked my GPS in the butt and got it working with almost every ROM I've flashed. Once you get over that first delay (downloading satellite data?) the first time you run it, it locks on fairly well afterward. At least, that's been my experience

Truckerglenn said:
This is how we learn and share our info, by trying. Just make a back up of anything that you want to change or replace.
GPS works perfect on my PA Jelly Beaned Infuse. First I ran GPS Test, it took a good twenty minutes if not more for it's first lock.
But now, I get a lock in a few seconds.
GPS Test, is free in the market.
Planning my escape!
Click to expand...
Click to collapse
I've already done that. It helped the next time I ran maps. When i left work yesterday I had maps give me turn by turn directions home. It took a couple minutes to lock, but after that it was working.
Then this morning I tried again. It wouldn't lock at all on the way in to work this morning. (only a 15 minute drive)
I also tried editing my GPS conf file this morning. I tried using ES file explorer, root explorer, and flashing. All three resulted in an empty file. ES says it was successful. Root explorer gives an error message 'there was not enough free disk space to complete the paste operation'
Flashing says it was successful, but again, it ends with an empty file. 0 bytes.
The file i used for the flash attempt is here. http://forum.xda-developers.com/showthread.php?t=1817558
With the gps.conf file I'm going to go leave the phone out in my car with gps on and see if it locks.
I understand that developers do a lot of work on this. I'm not trying to be a jerk. I just see a lot of people having the same issue and no agreement on a solution or even what the actual problem is.

brian Marshall said:
...
I understand that developers do a lot of work on this. I'm not trying to be a jerk. I just see a lot of people having the same issue and no agreement on a solution or even what the actual problem is.
Click to expand...
Click to collapse
I believe this is because there is no solution. If you want to try to help solve the problem, "adb shell" in and start tinkering.
You'll quickly find that GPS is anything but an easy thing to fix. A good SUPL provider for you may be completely different for others.

I can't find the Answer that fixed it for me,
but what I did:
Plug phone in, disable wifi, leave phone near window, and let
https://play.google.com/store/apps/...251bGwsMSwyLDYsImNvbS5hbmRyb2lkLmdwc3Rlc3QiXQ..
that app run... :45 minutes later it locked (GPS icon on Status Bar stopped blinking and showed locked, solid) with 7 satellites.
waited, rebooted the phone, and it locked in about 3 minutes.
-hope this helps.
other than that, love this ROM!

choffman said:
I believe this is because there is no solution. If you want to try to help solve the problem, "adb shell" in and start tinkering.
You'll quickly find that GPS is anything but an easy thing to fix. A good SUPL provider for you may be completely different for others.
Click to expand...
Click to collapse
Now that is an actual answer.
I suppose part of the problem for us noobs sorting through 300 page threads is all the filler with people saying "great rom omgz so awesome" even when they are posting on the first page and the ROM hasn't even been up long enough to do much more than flash it and swipe through the home screen.
All through out the CM10 and PA threads there are people saying GPS is working flawlessly... and then other people saying they have some fix. I guess people aren't supposed to post frivolous stuff in the dev threads, but they do.
Anyway, I ended up going back to GB as GPS is something I really need.

Hey guy's, i've also been having allot of issues with GPS just not being what it used to be, and it's pretty obvioius that this is an issue across the board for all JellyBean roms. I think those who mention that "GPS works flawlessly" don't quite understand the issue with AGPS (Assisted GPS), or they are not quite testing it thoroughly enough to see the problem.
To get an understanding of what AGPS is, and how it helps improve initial lock times, have a read here: http://en.wikipedia.org/wiki/Assisted_GPS
Also, to gain a better understanding of what I mean by "cold start" as you read below, and how it differs from a warm or hot start please read the following: http://m.gsmarena.com/glossary.php3?term=gps
That being said, i have been doing allot of digging in the hopes that someone out there has a solution to the problem with AGPS on the CM10 based ROMs on our phone.
To clarify the problem: AGPS does not seem to work and Initial lock times from a cold start can take several minutes, (this is not normal if AGPS is doing it's job). To clarify further, no one is saying that GPS does not work, it does in fact work, it just takes it's sweet time to lock and it seems to rely on pure GPS to download ephemeris data from the actual GPS birds for satelite lock acquisition, rather then downloading AGPS data over the network to speed things up. After the initial lock though, GPS functions as it should. After this point, if you do not use the phone again for several day's, it seems that upon first firing it up again you will experience the long delay in first lock. This is especially true if you keep GPS services turned off ussually to conserve battery. Those who report GPS is fine are probably keeping GPS services on all the time, and your GPS is probably working in the background at times and obviously will start up allot faster then it would from a cold start. (This is where i believe all the conflicting info comes from!)
The only info i have been able to find that did actually have an impact on my lock times was the thread below.
http://forum.xda-developers.com/showthread.php?t=1881655
I just started testing this out yesterday and i have seen some positive results. But i would caution those of you out there, and say that this is probably not a "fix" per se, but it did help cut down lock times in my case and at the very least it is a very inoformative thread that everyone should read.
What i have realisticly been able to achieve from a cold start is about 75 seconds to lock at the fastest. i.e. GPS services were off, i turned them all on, and now i started up GPS Status or GPS Test to get a lock. After that, as long as I haven't rebooted my phone it takes only a few seconds to lock.
How i tested, i started GPS Status, I then went to Tools --> MANAGE A-GPS STATE -> RESET (This is important to ensure you are clearing previously cached data. We want to make sure your previous cached info does not skew the effects of your changes.
I then replaced the gps.conf with the one contained in that thread, and i also made the change that was suggested in the Notes section that suggested modifying or adding a line in your build.prop file to "ro.ril.def.agps.mode = 1". This change set's your gps to use AGPS in Mobile Station Based (MSB) mode. For reference, setting it to "2" would set your AGPS to function to Mobile Station Assisted (MSA) mode. (Mode 1 - gave me more accurate initial locks at the expense of a bit longer lock times, Mode 2 gave me slightly quicker initial lock times, but was rather flaky and my position drifted quite a bit until GPS was running for quite some time.)
If your curious what is the difference between the two modes, see here: http://en.wikipedia.org/wiki/Assisted_GPS#Modes_of_operation
After making the changes to gps.conf and build.prop i rebooted my phone. When phone reboots, i then go back into GPS Status app, select settings, Tools --> MANAGE A-GPS STATE -> RESET, and then back to settings, Tools --> MANAGE A-GPS STATE -> DOWNLOAD (This should force the phone to attempt an AGPS download, if it hasn't already done so upon launching the app).
I have seen this same gps.conf being used in the newer RemICS-JB build. However based on the lack of feedback in that thread, i don't know if this is the golden fix we have all been looking for.
Even though this may not fix all your issues, i hope at the very least it helps clear up what the actual problem is, and how AGPS is supposed to work.
** Important Notes: **
- The version of the config that i was using was the Download the Google Specific No-SSL v3.1
- If you use the SSL version, then it will also require that you download the certifcate file. It's best to just stick with NO SSL as is explained in the thread.
- You should also note that i have cleaned out all the live wall papers, face unlock, and allot of other crap that i don't use to free up space in the /SYSTEM partition. I now have aproximately 21MB free in this partition. I think at least part of the problem with certain ROM's is that they have the /SYSTEM partition filled to the max with virtually no free space at all. I'm no expert on the subject, but i'm guessing that the AGPS data get's downloaded to this partition some where. Obviously if there is no space, then that would cause issues. Several others have reported shortened initial lock times after making room in the /SYSTEM partition.
- Another mistake people are making when testing AGPS and reporting false info, is having their WIFI on when testing GPS. To isolate the issue guy's you need have wifi off and you need to use a tool like GPS Status or GPS Test that shows that actual lock to satelites. You cannot properly test this and see the issue by using WIFI and turning on Google maps. Google maps will look at your reported wifi position and to you it looks like bamm.. i just got a lock in 2 seconds to withing 50 meters, wow these guy's are nut's, my GPS is awesome. Guess what.. your wifi and google maps is awesome.. not your GPS.. lol
- If anyone is familiar with running log's, it would be great if you could do a comparison of before and after. Showing the log of a completely fresh JB build, that shows that the AGPS data is not being downloaded, and then another log after all the changes above (including freeing up space in /SYSTEM) and hopefully it will show that AGPS data is now being downloaded and utilized. I myself am not familiar with logging data on the infuse, so i cannot and will not call this a fix until someone can actually show with real log's that AGPS data is now being utilized after these mods.

Thankfully, I'm one of the lucky ones who have always had a working GPS. It worked great when I was running AT&T stock Froyo, really good while I was on XDA GB roms, and fair > good after I went to PA JB. By far Scott's latest release of PA JB has been the best in this respect, but I can't help but tinker now that I've turned into a Droid zombie Strictly speaking the stock GPS configuration included on Scott's PA JB ROM worked charmingly, but I still had an issue whenever the phone went into deep sleep (say overnight without using it) the GPS lock the next morning took almost as much time coming from a sleep state as a cold boot. So, Like DaMeatMan I decided to give http://forum.xda-developers.com/showthread.php?t=1881655 a go. I chose the flashable option, and like DMM also edited the prop file. I picked the Google "no SSL" version 3.1 instead of the AT&T specific version. I figured I would give that one a try.
I'll keep everyone posted, buy my first impression (could be placebo effect) is that this configuration file and modification actually does improve over the original PA JB configuration by a small margin. Reported accuracy is better (by 10ft on average). Satellites in view and actually locking are 1-2 better than before. My main hope is that I can actually fire up Navigation in the morning and get working directions without having to fire up GPS Test first and relock all the NA satellites. I travel a lot, both for business and outdoor sports (hunting and fishing), and I have come to rely pretty heavily on GPS. I got spoiled when I got my first GPS capable phone because that meant I could leave my handheld GPS at home most of the time and that was one less thing I had to carry.

wevsspot said:
Thankfully, I'm one of the lucky ones who have always had a working GPS. It worked great when I was running AT&T stock Froyo, really good while I was on XDA GB roms, and fair > good after I went to PA JB. By far Scott's latest release of PA JB has been the best in this respect, but I can't help but tinker now that I've turned into a Droid zombie Strictly speaking the stock GPS configuration included on Scott's PA JB ROM worked charmingly, but I still had an issue whenever the phone went into deep sleep (say overnight without using it) the GPS lock the next morning took almost as much time coming from a sleep state as a cold boot. So, Like DaMeatMan I decided to give http://forum.xda-developers.com/showthread.php?t=1881655 a go. I chose the flashable option, and like DMM also edited the prop file. I picked the Google "no SSL" version 3.1 instead of the AT&T specific version. I figured I would give that one a try.
I'll keep everyone posted, buy my first impression (could be placebo effect) is that this configuration file and modification actually does improve over the original PA JB configuration by a small margin. Reported accuracy is better (by 10ft on average). Satellites in view and actually locking are 1-2 better than before. My main hope is that I can actually fire up Navigation in the morning and get working directions without having to fire up GPS Test first and relock all the NA satellites. I travel a lot, both for business and outdoor sports (hunting and fishing), and I have come to rely pretty heavily on GPS. I got spoiled when I got my first GPS capable phone because that meant I could leave my handheld GPS at home most of the time and that was one less thing I had to carry.
Click to expand...
Click to collapse
I have been have many of the same problems as others in this thread but I tried the fix in the S3 thread quoted above and it seems to have helped for right now. The first time I ran GPS Test after rebooting it did take a while (5-8min), but after that I get a lock in few seconds. I used the Google "no SSL" package also. I will do some more testing tomorrow and see if its reliable.