Database Users

GPS CM7.02 No Lock

Apologies for another GPS thread but i have tried all suggestions in popular threads using methods such as faster fix and GPS status's A-GPS tools and the method posted in "GPS CM7 fix".
Im currently running CM 7.02 (Stable) and radio 26.08.04.07_M3, which i was told had great overall performance including GPS. Ive tried using different ROM's and different radios but had no luck in finding a secure GPS lock. Recently i have been unable to even find even a single satellite using GPS test or GPS Status.
Before rooting and flashing new ROM's i used to get a fairly consistent GPS lock but even returning to the default HTC Sense ROM now does not return the GPS to working order. I also used to get a lock when i first flashed CM but since flashing various radios and ROM's ive been unable to get GPS working properly and I think this is partly to blame.
Ive done a fresh wipe and wiped dalvik cache but this has also not helped. Any suggestions or full methods on how to restore GPS would be greatly appreciated. Thanks.

If you've tried every suggestion and tried the radio / Kernel recommended for your ROM by the ROM Creator then you may have to consider it being a hardware fault.
Sent using witchcraft via XDA Developers App.

Im hoping this isn't the case but perhaps you be may right. The only reason im hopeful of a software fix is that i have had sporadic cases of GPS working using different ROM's in the past and theres no sign of external or damage to the phone in any other way.
Would there be a way to test it if a hardware fault was the cause of the problems?

It won't be hardware issue I have the same problem, there is a file you can fladlsh that fixes it but I cannot find it

Im hoping thats the case, also does anyone have any experience with RIL's that work with CM7? im not sure if they may help with the problem as it does seem as if there could be a problem lying between the radio and the ROM.
Is this file you mentioned anything to do with RIL's or is it a GPS log file flash or something along those lines?

I'm sure it was a .lib file, from the android revolution or leedroid thread agggges ago ill have q.look if I can find it

ok thanks, im assuming this could work with CM7 aswell then?

Yeh its the only way I could get GPS working on cm7, now I can't find it I have no GPS lol so I need it aswell

Ha, well let me know if you manage to find it. Do you know why this happens on CM7 and why not many people seem to know about it?

I think its something to do with drivers, some.peoples chips are different and the normal drivers aren't fully implemented

think i found it, just about to give it a whirl
http://forum.xda-developers.com/showpost.php?p=12208708&postcount=425

Ok then, so im guessing i just adb push the first file (gps.spade.so) and as im in Europe (UK) i flash the EU_GPS_HD.zip in recovery as a zip file?

yeh, just follow the instructions and it should work

Seems to have improved things, got 3 satellites in view but still no lock, il leave it to search for a while. Thanks

Try going into recovery and wiping cache and dalvik cache I got instant lock

Yep this seems to have worked, still abit inconsistent with the locks but i get about 5/6 satellites but not too accurate (60ft range). Can anyone recommend a Radio to work with CM 7.02 for GPS. Im on Orange UK if this alters things. Currently using 26.04.02.17_M2 but im sure there will be a more reliable one out there. Thanks.

Soft reboots in Kitchen-Builds

This doesn't belong here, but my lack of writing stuff prevents me from posting this where it is supposed to be
If possible, move this post into this thread: http://forum.xda-developers.com/showthread.php?t=1115958
So. JV5/JV9/JVO builds from kitchen with CF and HC kernels cause soft-reboots on my SGS I9000. I tested all of them by now. Tried the Talon Kernel 0.2.1 with JV5 and JV9, which caused boot-looping.
So I kept reading and found out that I was not the only one having this problem, but it seemed to be solveable by flashing a stock JVO first.
I already had Gingerbread Bootloaders, flashed JVK a while back, so I tried a few no-wipe ROMs as I mentioned above. All with the same problem. I lost connection to my cell network and it didn't come back. Somehow connected to the WiFi, I suppose. I could reproduce it by getting a GPS fix. But that was more or less related to my phone using wireless networks for positioning, which means that it switches on WiFi for just a second but without telling me.
Anyways, I thought I might have been wrong about the bootloaders being the reason to flash the stock firmware, so I did as it said: it specifically said JVO+ in the tutorial, so I went through the hassle and did the following:
- Flash an entire JVO firmware
- Reboot
(that one took a while)
- Full factory reset via dialer code
(that one took a while, too)
- reboot again, this time into bootloader, to flash a hc-speedmod kernel, to have root access and CWM
- reboot again, into CWM, to flash one of the ROMs I tried earlier
I ran back into my old trouble. So this is not an issue of the GB bootloaders or a previously installed version. The phone keeps soft-rebooting.
I re-installed the stock JVO firmware and flashed the speedmod kernel again, rooted via CWM menu and now I am just recovering my important applications via Titanium. Nothing bad happened yet, and it would have, with any of the kitchen ROMs Trust my, I almost tried them all
Nobody else wrote anything on that, so I thought I'd let you know there's no need to wipe all your data (like I did) and hope for the soft-reboots to be gone.
There's something seriously wrong there.
Anybody else having the same issues?
Cheers.
Andreas

Yep, I had a whole lot of trouble with the Kitchen JV5 release yesterday, ended up giving up and goind back to Darky's 10.1. Mine would boot, and when doing a media scan, would soft reset itself. I could get it to work eventually by powering down before media scanner completed then powering up. Bit odd - tried three builds of JV5 with different kernels but they ended up all being screwy. Ah well, will see what JVP brings...

glad to hear that I'm not the only one crazy enough to wipe his entire phone for a new (and fast) operating system.
Anyways... I am now back to my old status. Re-installed most of my apps, sync behavior, BT devices, wireless APs, etc. blayallah...
JVO with a hc speedmod kernel is by far the best and fastest ROM I have run so far.
Kitchen builds are dead to me until some of the people who ran into the same problems as I did confirm that those issues have been dealt with.
Just for your information:
- battery life seems amazing, at least regarding to the sensor. Hope it's any accurate. Had it unplugged over night and lost 22% battery life with WiFi on in a bit more than 10 hours
- it responds VERY fast, compared to any other ROM I had before
- bluetooth devices have to be set up again, for some reason my phone doesn't like my headset any longer. I can hear people talk but they can't hear me. However, the microphone does work when I use my headset for text2speech. Weird.
Anything else seems just the way it was before. Just faster.
I'd be glad to hear if someone could still help me out with the soft-reboots, if somebody else decides to use the kitchen builds either way I won't until somebody else tells me it's working now
Andreas

Why would u need to SOFT reboot ?

I don't *need* to soft-reboot. It just does that. Modem crashes, lost network connection. The phone doesn't actually entirely crash, it just restarts the network service and your phone is going to be offline.
That's a soft-reboot. No entire system crash or kernel panic, just the modem crashing.
That does happen when things are messed up

I'm having the same issue: on a JV5 and JV9 RomKitchen build with a JVO modem, as soon as I get a GPS lock, the phone soft-reboots.

paour said:
I'm having the same issue: on a JV5 and JV9 RomKitchen build with a JVO modem, as soon as I get a GPS lock, the phone soft-reboots.
Click to expand...
Click to collapse
guys, why dont you try the JVP v7 builds, its much better.
also, please select the default boot animation, else it will go into bootloop.

I can confirms that doing a no-wipe upgrade to JVP v7 fixed this soft-reboot issue.

Thank you for that information. I'm not in a flashing mood right now JVO is running just fine right now. Anything about JVP v7 that's worth the try?
JVO is running fine for now. So I'm not feeling like flashing everything over again.
Is there a simple way to just dump my current phone status, its ROM and everything somewhere to my harddrive and re-flash all of that over in case anything goes wrong?

andreas1979 said:
Thank you for that information. I'm not in a flashing mood right now JVO is running just fine right now. Anything about JVP v7 that's worth the try?
JVO is running fine for now. So I'm not feeling like flashing everything over again.
Is there a simple way to just dump my current phone status, its ROM and everything somewhere to my harddrive and re-flash all of that over in case anything goes wrong?
Click to expand...
Click to collapse
its pretty much the same stuff except very good speed optimizations, 2.3.4, and few UI tweaks.
its been the same since the first gingerbread leaks. we flash it for new builds dont we

...and now it's just pissing me off. JV9 Kitchen Build. On GPS Lock I get soft reboots. What the hell?!
Trying another one now... crap. I thought That would be fixed by now.

So. Kept me busy, just to be sure: Each and every combination I tried using 2.3.3 from the kitchen caused soft-reboots on GPS fix. The phone was very fast with the Talon Kernel and Ext4 FS, but I can't live without GPS
So I tried a non-wipe install over one of the not working 2.3.3 roms.
I'm on JVP now, not as fast as Talon, so it seems, but GPS works, getting a fix at my window within 5-10 seconds, no crashes whatsoever.
So. If anybody else experiences crashes like the ones I mentioned in the opening post, I can also confirm that the JVP ROMs seem to fix the problem.
Andreas

...as much as I hate talking to myself, it's still regarding the same issue, so I have to ask:
Saw the new kitchen build (JVR).
Two questions:
1. Is the soft-reboot issue finally fixed?
2. Is there a little language-switcher-button on the bottom left of the swype keyboard?
I use the JVO swype, and it has that button, and the new ones don't seem to have it any more? It's really nice if you need to switch between two languages all the time and you don't want to go into settings every time you need to switch.
Anyone know that? http://t1.gstatic.com/images?q=tbn:ANd9GcQC6orm5ZMAju2VzczB3MCbwEPeSH9yrYI6wxfdDGFCvkdpe7lQRg <- that one right here has it. Took me a long time to find that, because no swype version but JVO seems to have that feature.
I'd be glad about any answers to those two questions.
Andreas

andreas1979 said:
...as much as I hate talking to myself, it's still regarding the same issue, so I have to ask:
Saw the new kitchen build (JVR).
Two questions:
1. Is the soft-reboot issue finally fixed?
2. Is there a little language-switcher-button on the bottom left of the swype keyboard?
I use the JVO swype, and it has that button, and the new ones don't seem to have it any more? It's really nice if you need to switch between two languages all the time and you don't want to go into settings every time you need to switch.
Anyone know that? http://t1.gstatic.com/images?q=tbn:ANd9GcQC6orm5ZMAju2VzczB3MCbwEPeSH9yrYI6wxfdDGFCvkdpe7lQRg <- that one right here has it. Took me a long time to find that, because no swype version but JVO seems to have that feature.
I'd be glad about any answers to those two questions.
Andreas
Click to expand...
Click to collapse
I have tried the JVR base available in the kitchen---nothing to write home about,went back to STOCK--far better!I imagine the Kitchen as we used to know and use way back is now a thing of the past and the last nail was Tricky also leaving...

andreas1979 said:
glad to hear that I'm not the only one crazy enough to wipe his entire phone for a new (and fast) operating system.
Andreas
Click to expand...
Click to collapse
Guess that makes me crazy too
I've also been tinkering with customising ROM's myself to get to the boot-loop - getting pretty proficient at it now (guess I should read up a little more first)

Problems with 3g and ROMs

So when I first rooted my phone I put Fresh on there. I installed the ROM and the 2 radio files. I then got the 3d and gave the evo to my gf, but fresh was very slow for me so I installed the CM7 ROM.
CM7 was very buggy for her, especially since she was new to Android I decided Sprint Lover's ROM on there and flashed a newer update on it since.
The problem is that she has been having problems with 3g. She has so many problems and errors with 3g data. It shows that she has 3g, but she gets errors when she tries to access the internet.
My question is, how can I get it back to stock or a nice rooted stock rom to try and fix this problem? Do I just flash a stock rom? I'm guessing the fresh radio's might be messing something up. If there is a simple solution to this without having to do a full erase I'm sure she prefers that, being that we've fully erased her phone like 4 times already, lol.
Thanks guys.

Get the Sprint Lovers all-in-one package from here: http://forum.xda-developers.com/showthread.php?t=830153
It's flashed through hboot (it's a PC36IMG.zip) and will flash not just the rom but also the radios. This will wipe everything.
Alternately you can go here http://forum.xda-developers.com/showthread.php?t=715485 and get just the latest radios and flash those. Flashing this will not wipe everything.
If the problem is with the radios then that should fix it. If it doesn't, then it's likely that the issue lies somewhere else.

thanks, just installed the new radio's. Will see how it works.

I would definitely just get the app mybackup root and back everything up apps/data , sms etc.. Then just restore everything after you flash a new ROM.
Then just do a fresh install of what ever ROM you want then test out different radios till you find the best ones that work for you I'm on old radios because the newer ones didn't work great for me not all evos work the same .
I hope that helps you out some.
Sent from my PC36100 using XDA App

I got simalar problem like u.
I installed new radios, try different roms like MIUI, CM6, CM7, Miks, Minn, OMJ's, etc...... finally I go back to stock rom but still got the same problem.
I almost crazyy
the phone never got 3G signal, it only works 1G no matter what I did.
I've reserched couple days but looks like nobody got my problem.
now I fixed my problem btw... well I'm not sure this thing works to u or not
anyway try it if u still got 3G problem.
*I don't even remember where this posted originally,,, somewhere this forum or not,,
huge thanks to original author btw
download 'MSL reader' at market n get the numbers. it's 6 digits.
go to your phone and type ##3282#
tap 'edit mode'
type that 6 digits from MSL reader
tap 'data profile'
open menu n tap 'restore'
then the phone will be reboot.
when booting is done, your phone will start resistering to network.
after that, if something popup n ask update (mayb PRL update), 'cancel' it.
mine works perfectly now.
hope this work to u.

ok thanks, i'll try it out. I do get "3g" at the top though, but always get an error while trying to retrieve data.
Also, what files in the SD card are necessary? Is there a list? I think there are so many junk files in there taking up space, I don't know whats necessary and whats not.

Please help slow EVO 4G after flashing Sprint Lovers All In One
Obvious Noob here.
having issues with my Evo 4G after flashing Sprint Lovers All in one
phone seemed very fast immediatly after flashing SL but since then has become just overall slow.
in fact, i'm downloading an update to ROM Manager right now (a 2.27MB file) and it's taken literally 20 minutes to get to 75%. it's painful!
when i go in to manage applications...says "computing" on space, data and cache etc.
before i flashed SL all in one i ran factory reset 3x in a row prior to flashing - i did NOT re-format my SD card but had it removed (after unmounting).
Should i try to wipe and re-flash or just go to CM7? Are there any things i can try before re-flashing or moving to another rom? Please help..
thank you OB1B

had lite'ning 1.4, updated to 6.1, now wifi issues

ok basically i bought the phone second hand with lite'ning 1.4 on it and the wifi worked perfectly ok all the time. Since it was very old i updated it to 6.1. ever since then I have had issues with the wifi. it will connect perfectly fine to the router but i have no connectivity from it, nothing will get any net access at all. This is also not 100% of the time, its MOST of the time but not all, i do have moments where it does work fine. very very odd.
I have since tried updating the kernel to ninpho 2.1.3 from the 2.0.5 that comes with lite'ning 6.1, but that made no difference.
Someone suggested i try a wifi fix app from the market so i downloaded "FXR wifi fix and rescue" and ran that. It ran ok, wiped all my wifi settings and i restarted, but it has not solved the problem at all.
i find it very very odd since if it was a problem with the kernel OR the rom then everyone would surely have exactly the same problem. I know some people report wifi issues but most dont seem to.
anyone have any other ideas?

The odd thing is that it worked before the update. That means that it will most likely be software related.
You could try flashing something totally different like MIUI or CM. They provide kernels too, so this might resolve it, if your kernel and rom don't "like each other". This usually shouldn't happen, but updates breaking wifi shouldn't too. So it might be worth a try.
Sent from my GT-I9100 using XDA App

if i went to something completely different i assume i would have to factory reset the phone to wipe it first? (or factory reset it AFTER installing the new rom?)
was trying to avoid wiping it as i dont want to spend endless hours setting up everything again. i have backed it up with the free titanium but id still like to not have to find out whether the restore actually puts everything back properly
its very odd as its not completely broken, sometimes it does actually work, and it always connects to the router itself without any problem.

Probably wrong modem for you, flash another one. You can find modems in the developement section.

ok thanks I will have a look at that. It is currently on XXKH3 which is what came with lite'ning 6.1. i am confused though, all SGS2 hardware is identical so if this modem in 6.1 is causing this issue, wouldnt it affect every sgs2 that uses that modem?
I found the "shipped modem collection" post in the original development thread so have asked in there which modem i should try.
ok apparently i should try XXKI3. for o2 UK provider.
although i have now read that wifi is not managed by modem but by kernel only. if this is true then modem will not help me

Well, if the wifi is not managed by the modem, try what I proposed you earlier. The simplest would be to flash CM. Make a backup of your current rom, then do a full wipe and install CM.
As for your data:
1. Titanium backup restores your apps with their data (if you wish). That means that, for example, your games will keep their saves, other apps their settings and so on.
2. Assuming that you have a google-account, you don't have to worry about your contacts, calender,... Just sync it before you flash.
3. The backup you make in CWM will backup everything in case CM doesn't work for you.
In case it does work and you'll want to keep it, the other two other parts of your backup will minimize the remaining work. Note that you shouldn't restore "standard"-apps like the media-player or the SMS-app if titanium backup tells you that the app is not currently installed on your fresh CM. This means that CM uses it's own media player or SMS app. It could lead into problems to mix TouchWiz apps with CM.
A side-note:
Don't use the "stable" version. It had more bugs than expected and they made it a RC again. However, it is still in the stable folder. Get the latest nightly.
Sent from my GT-I9100 using XDA App

yep i think it is kernel. just noticed that 1.4 had cf-root, 6.1 had ninph 2.0.5 and i then tried ninph 2.1.3 and both ninph's have had the issue. i just tried speedmod k2-13 as i already had that downloaded and so far the wifi has been ok so hopefully thats it fixed. i guess it was something to do with ninph (i am thinking that because i have it set to sleep the wifi when the screen is off that somehow ninph is not handling this properly).
possibly one good thing to come of it all, ive updated the modem to KI3 which is supposedly the best one for o2 UK so i may even save more battery and speedmod is meant to be really good for battery too. I still have lite'ning on it at the moment.
i might have a look at CM anyway but i do kinda like lite'ning (although i havent actually used anything else since the phone came with it!)
also need to look at wakelocks to see if i can save some more, although not sure how i go about 'fixing' them at the moment

The choice between CM, MIUI and the stock mods is the choice between three different UI's.
I've had all three of them for some time. As you got CWM, you can just create a backup and do a sightseeing tour through the world of custom roms. Believe me, it's absolutely worth it. To get an idea of the main differences, I've written a short overview for you:
Stock mods use Samsung's TouchWiz. The default user interface that you get when buying a Samsung Android phone. So it mostly looks and "feels" the same and you can't do much about it.
CyanogenMod gives you the pure Android user interface. It's the closest to the Nexus phones by google, but gives you some extras. It is much more customizable than stock roms. It's sleek and fast.
MIUI is a whole different story. They're "Redefining Android". I think calling MIUI an "Android custom rom" is an understatement. It's an entire OS. The result of putting the best from iOS and Android into one powerful OS. It adds tons of useful(!) features. If you've ever used Windows Phone 7 or an iPhone, you know what a big step forwards Android is when it comes to features. Switching from Android to MIUI is just like that. There is just so much more. It is BY FAR the most customizable Android you can get.
Wow. If I look at how long the texts are, I see that I'm pretty biased. :O
Well maybe because I've switched so often between them. The stock roms had no chance, because after I used one of the others I found out that TouchWiz doesn't cut it anymore. I hate how "iPhone-ish" MIUI is, but if I flash CyanogenMod I just miss so much. Giving you a list of what MIUI adds would be another long post of this length.
Sent from my GT-I9100 using XDA App

cool thanks will have a look at MIUI at some point.
spoke too soon earlier, the wifi is maybe slightly better on this speedmod kernel BUT when i wake the phone from sleep, it takes about 30 seconds before i can connect to the net with anything. the phone connects to the wifi straight away, but i have no connectivity for a good 30 seconds and then it starts working. (its not the router, i am getting a connection and an IP pretty much as soon as i wake the phone). also the 30 seconds or so only STARTS once i try to connect to something. if i wake the phone and do something that does not want net access for a few mins and THEN try to get on the net via wifi (which shows as connected the entire time) then again i have to wait about 30 seconds from when it first tries to connect before it will start working.

ok slightly confused again.
I have lite'ning 6.1, speedmod k2-13 kernel and XXKI3 modem. I am trying to get cwm installed so i can make a full backup image of the entire phone while i try to sort out the wifi issues. i downloaded rom manager from market, and selected the firstion option in the app 'flash clockworkmod recovery'. it brings up a menu saying 'confirm phone model' with AT&T galaxy S2, a coulpe of i9000s and a plain "Samsung Galaxy S2" which is the one i selected. it downloads something and says successfully downloaded clockwork mod recovery.
i then choose reboot into recovery. when rebooting it attemps to install something but then says "failed to verify whole-file signature" and aborts. so im just stuck with the standard recovery instead.
so now im confused, have i missed something?

Ehhhhm, you don't need to do it.
Have a look at the features of the speed-mod-kernel:
Current features:
Root and CWM:
- Automatically installs root (su)
- CWM 4.0.1.5 recovery
It already installs it right away.
Just in case you messed something up. You should flash the kernel again.
Besides that you don't need the RomManager at all. Just shut your phone down and boot into the recovery with the key-combo. Create and restore backups from there.
Sent from my GT-I9100 using XDA App

[Q] [solved] GPS Not Working After Cyanogen Mod Install

Hi All,
I just got a new used Samsung Galaxy S4 on Sprint and brought it over to Ting (way, way, way cheaper). I got everything working with the stock ROM, including GPS, but I wanted to install Cyanogenmod, so I rooted it, flashed TWRP 7.8, and flashed the latest Cyanogenmod (snapshot M12), with Gapps, and a zip file with the Ting data XML files to get 3G and LTE working.
Everything seemed to work great, but then while driving I noticed that the GPS just did not get a lock. After trying for an hour, it still had nothing. I installed GPS Status and saw that it had no satellites. Clearing the GPS cache and re-downloading data with that app did not solve the problem. I tried GPS Doctor without success and the GPS fix equally without success.
I rebooted, then factory reset, then erased everything and flashed the latest CM nightly, all with no success.
I found some similar problems online at these places:
http://myblog-online.co.uk/2013/12/the-continuing-saga-of-my-galaxy-s4-custom-roms/
http://forum.cyanogenmod.org/topic/98811-gps-not-working-23rd-nightly/
http://forum.xda-developers.com/showthread.php?t=2172670
These are all old and none gave me anything that useful. Is it a GPS radio issue? Is there anything I can do?
I also just found this page: http://wiki.cyanogenmod.org/w/Known_Issues_page_for_d2lte, but it is for the S3, not sure what to make of it.
I made a nandroid backup of my stock rom, but then I copied it to my computer, and when I copied it back again it didn't work. TWRP failed to restore with the error "No partition selected for restore".
My plan now is to flash the stock rom with odin, confirm that GPS works there, and then try again, but this is becoming a huge time sink and I have a lot of other things to do.
Does anyone have any ideas how I can fix this? I am pretty sure it isn't a hardware issue.

MikeDacre said:
Hi All,
I just got a new used Samsung Galaxy S4 on Sprint and brought it over to Ting (way, way, way cheaper). I got everything working with the stock ROM, including GPS, but I wanted to install Cyanogenmod, so I rooted it, flashed TWRP 7.8, and flashed the latest Cyanogenmod (snapshot M12), with Gapps, and a zip file with the Ting data XML files to get 3G and LTE working.
Everything seemed to work great, but then while driving I noticed that the GPS just did not get a lock. After trying for an hour, it still had nothing. I installed GPS Status and saw that it had no satellites. Clearing the GPS cache and re-downloading data with that app did not solve the problem. I tried GPS Doctor without success and the GPS fix equally without success.
I rebooted, then factory reset, then erased everything and flashed the latest CM nightly, all with no success.
I found some similar problems online at these places:
http://myblog-online.co.uk/2013/12/the-continuing-saga-of-my-galaxy-s4-custom-roms/
http://forum.cyanogenmod.org/topic/98811-gps-not-working-23rd-nightly/
http://forum.xda-developers.com/showthread.php?t=2172670
These are all old and none gave me anything that useful. Is it a GPS radio issue? Is there anything I can do?
I also just found this page: http://wiki.cyanogenmod.org/w/Known_Issues_page_for_d2lte, but it is for the S3, not sure what to make of it.
I made a nandroid backup of my stock rom, but then I copied it to my computer, and when I copied it back again it didn't work. TWRP failed to restore with the error "No partition selected for restore".
My plan now is to flash the stock rom with odin, confirm that GPS works there, and then try again, but this is becoming a huge time sink and I have a lot of other things to do.
Does anyone have any ideas how I can fix this? I am pretty sure it isn't a hardware issue.
Click to expand...
Click to collapse
That's is pretty much what you have to do. Its go back to stock and get a lock there in maps. When you have a lock just go back to recovery and flash your custom ROM of choice. That is pretty much the only fix.
Sent from my GT-I9505G using XDA Free mobile app

ROMANTiC KiD said:
That's is pretty much what you have to do. Its go back to stock and get a lock there in maps. When you have a lock just go back to recovery and flash your custom ROM of choice. That is pretty much the only fix.
Sent from my GT-I9505G using XDA Free mobile app
Click to expand...
Click to collapse
Thanks ROMANTiC KiD,
Good to know that I am heading down the right path before I spend a lot of time on this.
Should I not erase everything when I flash the custom ROM? I am pretty sure last time I used TWRP advanced erase to clear everything on the phone before installing. Should I just do a regular factory reset in TWRP to install CM in order to keep GPS functionality?
Thanks!

MikeDacre said:
Thanks ROMANTiC KiD,
Good to know that I am heading down the right path before I spend a lot of time on this.
Should I not erase everything when I flash the custom ROM? I am pretty sure last time I used TWRP advanced erase to clear everything on the phone before installing. Should I just do a regular factory reset in TWRP to install CM in order to keep GPS functionality?
Thanks!
Click to expand...
Click to collapse
Yes sir you can factory reset in twrp just remember to back up your files first! And you should still retain GPS lock.
Sent from my GT-I9505G using XDA Free mobile app

ROMANTiC KiD said:
Yes sir you can factory reset in twrp just remember to back up your files first! And you should still retain GPS lock.
Sent from my GT-I9505G using XDA Free mobile app
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Thanks for the confirmation. I did exactly that and I can confirm that it did indeed work.
Thanks so much for the help.

Hi all,
Sorry to resurrect an old thread, but I am having this issue and the stock firmware flash isn't solving the issue. It is all very odd because it doesn't actually retain any kind of lock after flashing. I'm following instruction on here, but after locking gps on stock, then going to CM I cannot get a fix. It either had a massive radius on Maps, or it just locks to my home or work location.
Since trying much more I have managed to get the occasional satellite lock via GPS Locker, but even then as soon as I move from either my house or work, it can't find anything to lock onto and just defaults to a static location.
Is there anything you would recommend? I have 2 Samsung GS4's and they both exhibit the same problem. I have also tried this on an S4 Mini, but that retained lock just fine. I'm really confused as to what to actually try. If you could recommend anything I'd be very grateful.
Again, I'm sorry to res an old thread, but no one has been replying to the one I started for this issue :/

Your problem may be that there is some new issue with the newer firmware. I had success by first flashing the *old* firmware (you can download it from my dropbox here: https://www.dropbox.com/s/o3f3ynyezyy4yw9/L720VPUFNAE_L720SPTFNAE_L720VPUFNAE_HOME.tar.md5?dl=0) and then upgrading to the second to last firmware update for the GS4: which gives you Android 5 but without fixing the MMS bug.
After that I flash TWRP with Odin, and then do a full erase in TWRP followed by flashing the latest CM. That series of steps works for me every time, although I found that large changes to my physical location (e.g. flying to England from California) cause it to break again. I actually had to sit in a cafe in an English airport with my laptop out flashing my phone back to stock just so that I could use Google maps to get to my mother's house. It was pretty ridiculous. Because of that and other issues, I now just use stock. I hate it, but I do it anyway. Good luck.