[Q] No GPS after flash to Lollipop - One (M8) Q&A, Help & Troubleshooting

I know this seems to be a fairly common issue, but I've read & tried everything I could with no luck. Wondering what other options I have.
Been on a few different ROMs on my S-OFF M8 (vzw). Went from LiquidSmooth 4.4.4 to LiquidSmooth 5.0.2 and lost GPS. Most solutions say flash back to stock, get a GPS lock, then restore nandroid. Problem is, even when I flash back to stock (either KK or L), I still don't have GPS. Nothing seems to work.
I've tried flashing back to stock rooted roms and I've tried RUU back to stock rooted roms. Never get GPS lock. Any other ideas or am I SOL here?

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[Q] Weird GPS problem. What happened?

Yesterday my gps wasnt working at all. It would not lock on no matter what I did. I was on a custom rom and I tried wiping my data/cache, reinstalling maps (just for giggles), and a multitude apps from the market that help deal with gps problems (gps fix, gps status, toolbox, etc).
When all this didn't work I decided to odin back to the last official JB update and still no gps. On a whim I decided to odin back to an ICS firmware and that made my gps work. I have no idea but it did. I then odin to UVDLJC, installed TWRP's most recent and restored my backup of the custom rom I was using in the first place and gps now worked.
While I'm happy as heck that my gps is now working and that it was not a hardware issue I'm extremely curious what happened.
I have flashed many roms lately and I cannot think what a custom rom can do to gps to hose it or if it was just one of those things. I would of thought that when I originally did an odin to UVDLJC that would fix the issue but that didn't. Whatever the flash to ICS did fixed it but what in the heck could that of been?
I figure if I can find out or get an idea what happened then I can steer away from flashing certain roms, or just be prepared that flashing any roms at all can make this happen again.
Same here.
Hello, ddcoh.
I am currently having the same issue you had with GPS not working. I've tried everything from trying tedious Play store apps to trying many different roms and kernels (clean installing every time) to completely reverting back to stock including using TriangleAway in case that did any help. Nothing worked. I have been thinking about going back to ICS to see if that worked but the last time I tried to downgrade from 4.1.1 to 4.0.4 I ended up soft bricking my phone even though I followed the steps word for word.
Can you tell how you went about downgrading to ICS and then back to JB, please? I use my GPS a lot and I would hate to find out it's a hardware issue.
Typically, it's been when people are going from 4.2 to 4.1.
Zza1989 said:
Hello, ddcoh.
I am currently having the same issue you had with GPS not working. I've tried everything from trying tedious Play store apps to trying many different roms and kernels (clean installing every time) to completely reverting back to stock including using TriangleAway in case that did any help. Nothing worked. I have been thinking about going back to ICS to see if that worked but the last time I tried to downgrade from 4.1.1 to 4.0.4 I ended up soft bricking my phone even though I followed the steps word for word.
Can you tell how you went about downgrading to ICS and then back to JB, please? I use my GPS a lot and I would hate to find out it's a hardware issue.
Click to expand...
Click to collapse
Well I used odin to flash an T999_UVALEM which was a prerooted ICS rom. After booting it up I checked to see if GPS was working and it was.
I then used odin again to flash T999_UVDLJA which is a JB rom and booted it up also and saw that gps was working. Then I just restored a backup of a room I had been using and GPS still worked.
I've been out of town and noticed that after flashing a few roms that gps wasn't working so instead of doing all the above stuff I just flashed a cm10 rom. I believe I either used a cm10 nightly (or maybe 10.1, memory is hazy) or LiquidRom and that got the GPS working by just doing that. Not sure if that will work for you but you could always backup your setup using TWRP's latest and then flashing a cm10 rom and seeing if gps is working and if that fixes it then you could then just reboot and restore the rom you are currently on and that might fix your gps for you.
http://forum.xda-developers.com/showthread.php?t=1949687

Stock ROM GPS won't fix

Got tired of dealing with unstable custom ROMs so I decided to flash back to stock. Everything went smoothly and everything is working great except my GPS refuses to fix. I tried going back to the earliest stock version available for downloading, rooting that, flashing 10g modem, still no luck. Flashed back to 20g, still no luck. Flashed E980H, still no luck. Flashed AOKP, no luck. Is my GPS just dead or what?

Downgraded from 4.4.4 to 4.2, reverted back and no WIFI, tried everything!

Well, I followed an XDA thread to SIM unlock the M919. It involved downgrading from 4.4.4 to 4.2. and I successfully unlocked my device! But now I have no Wifi... I tried flashing every single modem, every firmware (Official TW ones via Odin, every custom rom using TWRP). They flashed well and everything worked besides the Wifi. I've found some threads from people with the exact same problem (they tried to unlock it using the same method) but those are old threads with no solution.
I've spent 24hrs reading and flashing and wiping and reading again. Any ideas?
Many thanks!
Anyone? If you find me a solution I will Paypal you 20 bucks!
Sent from my SM-N900T using XDA Free mobile app
I am having the same issue. My phone was already unlocked though, so no downgrading on my part, but I think we're having the same issue. Is yours showing connected, but usually getting time outs or disconnecting?
My issue happened when I flashed from stock 4.2 to the GPE rom for 5.1. Wi-fi issues. Connected, but exclamation point saying that my connection wasn't working. So I flashed a different rom (candy) and still, I have issues. So I went back to 4.2, stock everything. Stock bootloader, stock rom, stock radio. Still had issues. So I decided maybe flashing a new radio would work, so I flashed NH7 and NK2 (broke my audio). Still didn't work. Realized my bootloader doesn't match the modem, so I flashed 4.4.4 stock bootloader and stock NK2 modem. Tried it with the candy rom. No go. I tried the 4.4.4 stock ROM, wifi still has that stupid exclamation point. I've even gone so far as flashing both the bootloader and the radio over 5 times in one go (with battery pull each time) to see if that will work (starting to go nuts, I guess), but still, no fix.
I've had a temporary fix with Tasker (Connect2wifi), but it doesn't work when my phone is on idle, so I don't get any notifications until I actually wake up my phone.
I'm starting to wonder if it's the physical wifi radio (antenna) inside my phone that's broken. But then I wouldn't be able to connect at all if that's the case, right?
tpl33 said:
I am having the same issue. My phone was already unlocked though, so no downgrading on my part, but I think we're having the same issue. Is yours showing connected, but usually getting time outs or disconnecting?
My issue happened when I flashed from stock 4.2 to the GPE rom for 5.1. Wi-fi issues. Connected, but exclamation point saying that my connection wasn't working. So I flashed a different rom (candy) and still, I have issues. So I went back to 4.2, stock everything. Stock bootloader, stock rom, stock radio. Still had issues. So I decided maybe flashing a new radio would work, so I flashed NH7 and NK2 (broke my audio). Still didn't work. Realized my bootloader doesn't match the modem, so I flashed 4.4.4 stock bootloader and stock NK2 modem. Tried it with the candy rom. No go. I tried the 4.4.4 stock ROM, wifi still has that stupid exclamation point. I've even gone so far as flashing both the bootloader and the radio over 5 times in one go (with battery pull each time) to see if that will work (starting to go nuts, I guess), but still, no fix.
I've had a temporary fix with Tasker (Connect2wifi), but it doesn't work when my phone is on idle, so I don't get any notifications until I actually wake up my phone.
I'm starting to wonder if it's the physical wifi radio (antenna) inside my phone that's broken. But then I wouldn't be able to connect at all if that's the case, right?
Click to expand...
Click to collapse
No, unfortunately my issue is very different. I know it isn't hardware related. I've never had any issues with it until the second I downgraded. Wifi just doesn't turn on. When I click on the button it just tries to turn on and after a couple seconds it turns back off, without even detecting any networks. This happens no matter what rom, version of android or modem I use. Downgraded, upgraded, tested every single modem and rom via TWRP and Odin.
Sent from my SM-N900T using XDA Free mobile app

GPS issues on stock

I recently flashed 4.4.2 stock Rom and now my GPS does not seem to be working. It can't seem to find me and when it does, the radius is large. The little flashing GPS icon that says "Searching using GPS..." never seems to go away. I tried tightening screws to no avail. Can anyone advise me on what to do before I have to wipe and flash the Rom again?
It is the 4.4.2 stock Rom posted by enewman and is the debloatd and Knox free version.

Upgrade broke the GPS

Hi all, I have a note 2 shg-i317 that was originally on Bell in Canada. It was unlocked and the aws mod done to it, I use freedom mobile, aka T-mobile in the states.
I was running a Rom for the past 3 years Slimfast 4.4 and liked it. I had tried Nugat on another phone, thought I would try the [ROM][7.1.2][OFFICIAL] LineageOS for N7105
I did the upgrade, broke the root, could not get a few things working, so I decided to restore the Slimfast backup I had just made (complete including modem etc) and everything works except the GPS.
GPS for me is huge, I use it a lot. I cannot lock on to 1 satellite now. Before i was able to lock onto a minimum of 16 in about 30-45 seconds, if outside.
I really dont care if I can get to 7.1 at the moment. I need my GPS back - any troublshooting for getting GPS to work on this phone?
James
I would try to flash the original stock for your phone and country from sammobile. com
Gps should work normaly then. If not your hardware is broken. If it works you can always flash your data back from your Slimfast rom.
Verstuurd vanaf mijn SM-N910C met Tapatalk
Crap, I am posting here, because I did it again. Again not sure how. I tried to run Reserection, and I guess that messed up the GPS.
To put the original stock rom on.. I have to do that through ODIN? I dont remember how I fixed this last year.. Sorry.
Hope somone can help I need the GPS.
James
ps. Used odin 3.09 to flash the original rom... still no GPS
You flashed the latest 4.4.2 room?
audit13 said:
You flashed the latest 4.4.2 room?
Click to expand...
Click to collapse
The Rom that I flashed to try and restore the GPS was I317MVLUDNF1_I317MOYADNF1_BMC (mine was an originally BELL phone)
But that did not repair the GPS from me flashing resurection.. I THINK did it. I flashed an android 6 and an android 7 rom. (Mokee) but tried to go back to my Slimfast.. and the GPS was now broken.
Basically what I did a year ago.. somehow I fixed it then.. but cannot remember at all how I did it.
James
The note 2 sold by Rogers, Bell, and Telus are exactly the same model and stock roms from these carriers can be cross flashed.
Try flashing the stock ROM twice in Odin with a factory reset in between each flash.
audit13 said:
The note 2 sold by Rogers, Bell, and Telus are exactly the same model and stock roms from these carriers can be cross flashed.
Try flashing the stock ROM twice in Odin with a factory reset in between each flash.
Click to expand...
Click to collapse
Do you mean boot up the rom.. run the reset in the rom? or flash.. - load TWRP back in.. WIPE.. then FLASH again with odin?
Thanks for helping btw.
James
I have backups (complete all partitions) of my rom.. Slimfast 4.4 from 2-3 days ago.. when I tried this. SO.. if I can get the Factory rom to restore the GPS.. how can I restore the backup.. I saw somewhere that the EFS partition could be left out and that might help? dont restore the modem? how??
James
I meant flash with Odin, boot into stock recovery, factory reset, flash again with Odin, boot into stock recovery, factory reset, and boot into the stock ROM.
Nope, still no GPS lock.. I have the flashing circle (always had) and it will not lock.. I read about where people go into a service mode and rebuild the NV? .. I assume this is something that Mokee or Reserection did.. not sure how.
Any other ideas?
James
what about using Odin or TWRP to put different modems in? does the modem effect the GPS?
tried this.. does not seem to. grrrrr wish I knew how I fixed this.
James
I assume there are no loose wires. Does it get a lock when using wifi? Not sure what else to suggest.
Not sure about rebuilding NV.
No.. I broke it with playing with custom roms.. Liniage was last year.. I did not try that this year.. but tried both android 6 reserection and android 7 Mokee.. and I am pretty sure they messed it up.. I am also pretty sure there was something I did .. easy like load an old STOCK rom and it fixed it.. I was then able to put my slimfast 4.4 back over it and it was fine. Unfortunatly .. not enough people still using this device.. I will have to have patience I guess.
James
So I have tried differenct stock roms, but I think the issue is ODIN will not restore code from a rom image that is HARDWARE based. I wanted to use Samsung smartswitch but they disabled the part of it that allowed you to factory reset the phone, this seemed to work for several people. Many have also reported entering a code and going into a service mode.. there you can do to a menu that will rebuild hardware modules back to default. But I have not been able to get into that mode because it seems to be a touchwiz only option, and I cannot find a factory rom that is touchwiz based for this model.
What needs to be done is a true FACTORY ROM image.. that would revert all software and hardware back to original, but I cannot seem to find that anywhere.
James
The only factory roms that I know of come from places like sammobile.com and they are all based on TouchWiz which is Samsung's launcher.
So guess what? put Ressurection back on.. and the GPS is back.
I cannot get it to work in any KitKat based rom.. but now anything Marshmellow up.. works.. HMMMMMM
James

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