[Q] Need help flashing CM11 on ZVC - Sprint LG G2

My LG G2 is on the latest version LS980ZVC rooted and latest TWRP Recovery(2.7.0.0). When I flash the latest CM11 nightly and GAPPS, Everything is successful. Problem is when I try to boot it, it won't go passed the LG Logo. I've tried factory reseting it through recovery while the rom is still flashed but to no luck.
I am not new to flashing as I've been doing it since the HTC Evo.
I've tried for the past couple of days searching through this site and the internet on my issue. When the ZVC update first came around there was a thread in the Sprint android development section that explained how flash any rom after the ZVC update and now I cannot find this thread.
Also, When I flash Mahdi Rom, it flash and boots perfectly fine. Only problem is, I get no data and service goes away completely and doesn't come back unless I reflash the rom. But it only lasts for about 5 minutes before it just drops again. When I switch back to stock and I find that I have to go into my mobile network settings and switch from global/wcdma back to lte/cdma in order to get service back.
Any help will be greatly appreciated.

anthony62 said:
My LG G2 is on the latest version LS980ZVC rooted and latest TWRP Recovery(2.7.0.0). When I flash the latest CM11 nightly and GAPPS, Everything is successful. Problem is when I try to boot it, it won't go passed the LG Logo. I've tried factory reseting it through recovery while the rom is still flashed but to no luck.
I am not new to flashing as I've been doing it since the HTC Evo.
I've tried for the past couple of days searching through this site and the internet on my issue. When the ZVC update first came around there was a thread in the Sprint android development section that explained how flash any rom after the ZVC update and now I cannot find this thread.
Also, When I flash Mahdi Rom, it flash and boots perfectly fine. Only problem is, I get no data and service goes away completely and doesn't come back unless I reflash the rom. But it only lasts for about 5 minutes before it just drops again. When I switch back to stock and I find that I have to go into my mobile network settings and switch from global/wcdma back to lte/cdma in order to get service back.
Any help will be greatly appreciated.
Click to expand...
Click to collapse
same you, i was do that and flash radio for ZVC LS980 but the phone reboot loop, i was try from ZV8 > root > custom recovery > Flash cm11 + radio, it worked but the sim card can't make call and recive message,...so sad

skygatevn said:
same you, i was do that and flash radio for ZVC LS980 but the phone reboot loop, i was try from ZV8 > root > custom recovery > Flash cm11 + radio, it worked but the sim card can't make call and recive message,...so sad
Click to expand...
Click to collapse
Yeah I tried that as well and I would get 3G data but phone calls or texts didn't work either for me.

Zv8 modem
The CM11 nightlies aren't made to work with the new ZVC kernel and baseband. In order to flash CM11 from ZVC you need to obtain the ZV8 modem and flash BEFORE the ROM and GAPPS. Boot to recovery and wipe everything except internal storage 3x to make sure everything is wiped. Then flash the modem rom and gapps in that order exactly otherwise it won't work. After everything flashes clear the davlik cache and cache 3x then reboot to system. Been using this method since I got my phone and it works everytime with every ROM I've tried. Also for those interested in unlocking US GSM capabilities do this then install an app called Tellinfo, from there you can do everything to change over to your GSM bands and use a GSM SIM card. I've been on AT&T for 3 months now.

Related

Problem loading G2 V3 Rom with E980

I have downloaded the G2 V3 update.zip to my phone and have tried installing the zip via CWM. I followed instructions stating factory default first, then flash the update.zip, install the SU add-on 1, then factory default. When I reboot my phone I get the LG boot screen, afterwards my indicator lights both flash on, my phone vibrates and the backlight stays on but I get a blank screen. I left it like this for 20 minutes but it never continues. I have tried rebooting but it does the same thing. I have loaded my previous CM 10.2 Rom since. Tried repeating this process, get same results. Adding to this, when I load the add-on it does say there was a problem with Loki at the end.
Please help.
Are you coming from stock or were you on CM?
I always return to stock before changing roms,, I've heard of people having trouble going from CM to V3....
_________________
Beavers & Ducks!
Always wipe system, cache and dalvik-cache before flashing. I'd also suggest wiping the internal sd card as well. Always gives me the best results. I've jumped from ROM to ROM this way with no problems. :3
Sent from my LG-E988 using XDA Premium 4 mobile app
That has to be what it is, I am going from CM10.2 to this mod. I am going to try to go to stock and then message again my results. Thank you for replying to my message.
tobias87 said:
That has to be what it is, I am going from CM10.2 to this mod. I am going to try to go to stock and then message again my results. Thank you for replying to my message.
Click to expand...
Click to collapse
Yup, that is the issue. Those ROMs do not have stock kernel bundled and hence they do not boot when you come from CM or Carbon or Vanir to V3.
You have to go back to stock and then flash that.
Or there might be another way which might work and will spare you hassles of going back to stock and rerooting. Give it a go.
1. Download this kernel : http://forum.xda-developers.com/showthread.php?t=2363330
This kernel is for stock based ROMs.
2. Install V3 by following the procedure. After second factory reset, before rebooting, flash this kernel. And then reboot.
See if that is successful. It should be. (it will still take 4-5 minutes for first boot )
If not , you can always go back to CM and then go through whole going back to stock thing.
Got The thing to work by flashing the CWM recovery files in three parts. Then updated to V4 and SU. The only thing I can't seem to get working is the wireless reefer devices can connect but the receive no data.
Funkym0nkey said:
Yup, that is the issue. Those ROMs do not have stock kernel bundled and hence they do not boot when you come from CM or Carbon or Vanir to V3.
You have to go back to stock and then flash that.
Or there might be another way which might work and will spare you hassles of going back to stock and rerooting. Give it a go.
1. Download this kernel : http://forum.xda-developers.com/showthread.php?t=2363330
This kernel is for stock based ROMs.
2. Install V3 by following the procedure. After second factory reset, before rebooting, flash this kernel. And then reboot.
See if that is successful. It should be. (it will still take 4-5 minutes for first boot )
If not , you can always go back to CM and then go through whole going back to stock thing.
Click to expand...
Click to collapse
Swype decided to fill in an odd word for what I meant sorry. I meant wireless tether.
tobias87 said:
Got The thing to work by flashing the CWM recovery files in three parts. Then updated to V4 and SU. The only thing I can't seem to get working is the wireless reefer devices can connect but the receive no data.
Click to expand...
Click to collapse

LG Optimus G LS970 Data connection problem (4G LTE)

Relatively inexperienced with flashing ROMs and what not, but since switching to the LG Optimus G, flashing has been really simple. I have been running into a few problems though. No matter which ROM I choose, I can't seem to get my data connection to work. I've tried flashing various zips that claim to fix it, but so far no luck.
Currently running CM11 with TWRP
Any help would be appreciated.
PattyCakez said:
Relatively inexperienced with flashing ROMs and what not, but since switching to the LG Optimus G, flashing has been really simple. I have been running into a few problems though. No matter which ROM I choose, I can't seem to get my data connection to work. I've tried flashing various zips that claim to fix it, but so far no luck.
Currently running CM11 with TWRP
Any help would be appreciated.
Click to expand...
Click to collapse
Make a back up of your rom via recovery
Flash stock ZVC ROM, update PRL & Profile, Wipe data/system/cache/dalvik and restore 4.4.4
data should be restored.
RG3 said:
Make a back up of your rom via recovery
Flash stock ZVC ROM, update PRL & Profile, Wipe data/system/cache/dalvik and restore 4.4.4
data should be restored.
Click to expand...
Click to collapse
Ok, I downloaded the ZVC Stock ROM .zip file from here
http://forum.xda-developers.com/showthread.php?t=2536636
I tried flashing and it gets stuck at the LG screen. Are there any gapps that i'm supposed to flash with it?
PattyCakez said:
Ok, I downloaded the ZVC Stock ROM .zip file from here
http://forum.xda-developers.com/showthread.php?t=2536636
I tried flashing and it gets stuck at the LG screen. Are there any gapps that i'm supposed to flash with it?
Click to expand...
Click to collapse
No. The ROM itself is all you need. I'm not sure why it's stuck at boot. Try wiping cache, dalvik, and data. It should just boot. How long did you wait? It might take awhile. Possibly 5ish but no more than 10 minutes to boot.
dopy25 said:
No. The ROM itself is all you need. I'm not sure why it's stuck at boot. Try wiping cache, dalvik, and data. It should just boot. How long did you wait? It might take awhile. Possibly 5ish but no more than 10 minutes to boot.
Click to expand...
Click to collapse
I waited at least 15-20 minutes. I'll try it again.
Ok, so I got it back to the stock ROM, working on trying to update the PRL.
PattyCakez said:
Ok, so I got it back to the stock ROM, working on trying to update the PRL.
Click to expand...
Click to collapse
What changed that caused it to work? I am glad you got it, I am just curious how the process came together.
I'm thinking forgot to wipe /system.
Not sure what I did different to make it boot into stock, but I made a back up, (Boot, System, Data, and Cache), flashed stock, booted, updated profile and PRL, wiped (Dalvik System, Data, and Cache) reinstalled back up and still no 4G, am I missing something or doing something wrong?
Almost Working
So I almost fixed it, I did the whole flashing back to stock thing with no luck. I did a clean flash of the latest cm11 Nightly, then also flashed the file found here
https://help.ting.com/entries/23423026-Flashable-Zip-Fixed-LTE-eHRPD-for-CyanogenMod
I figured maybe the problem was due to me being on Ting. So far I can get it to say I am on LTE, but any data connection I am receiving is painfully slow to the point where it is completely useless.
Any suggestions?
PattyCakez said:
So I almost fixed it, I did the whole flashing back to stock thing with no luck. I did a clean flash of the latest cm11 Nightly, then also flashed the file found here
https://help.ting.com/entries/23423026-Flashable-Zip-Fixed-LTE-eHRPD-for-CyanogenMod
I figured maybe the problem was due to me being on Ting. So far I can get it to say I am on LTE, but any data connection I am receiving is painfully slow to the point where it is completely useless.
Any suggestions?
Click to expand...
Click to collapse
I am also on ting, and the only way I have been able to get my LTE to be consistent it to manually enter in the APN settings. I have tried to flash that same file, but I don't get LTE.
Sent from my LG-LS970 using XDA Free mobile app
cmf04 said:
I am also on ting, and the only way I have been able to get my LTE to be consistent it to manually enter in the APN settings. I have tried to flash that same file, but I don't get LTE.
Sent from my LG-LS970 using XDA Free mobile app
Click to expand...
Click to collapse
How would I go about manually putting in the APN settings? Is there a tutorial somewhere?
Also, is the unreliable LTE causeing my mms to not work? Or is that a separate problem all together?
I use this program to change my APN
https://play.google.com/store/apps/details?id=it.appando.app.changeApn
This is what my APN is
Name=Sprint
APN=n.t8.ispsn
MMSC=http://mms.plspictures.com
MMS proxy=68.28.31.7
MMS port=80
MCC=310
MNC=120
APN type=default,mms
APN protocol=IPv4
APN roaming protocol=IPv4
You might to try and run a stock ROM and update your prl and profile.
Sent from my LG-LS970 using XDA Free mobile app

ZVD, AOSP, Loki, HELP?!

Okay, so I think I understand all this, but help me out anyways please. I know that once you take the ZVA OTA you can't easily flash an AOSP ROM like CyanogenMod, and this is because something in ZVA (the radio?) patched Loki, right? So what has to be changed (if anything besides going back to ZV to be able to flash an AOSP ROM? And after doing whatever that is, can I then use Nandroids and Titanium to switch between, say CyanogenMod and the original software that came on my phone? Thanks, just trying to understand how it all works.
Your best option is to tot to zva, put recovery, flash your cm.
Sent from my Nexus 7 using Tapatalk
Ugh but tot'ing is such a PITA
Aosp are in zva radio firmware. Current is zvc radio with zvd firmware.
Sent from my Nexus 7 using Tapatalk
Okay so if I .TOT back to LS980ZVA, root with ioroot, put TWRP on with AutoRec, then make a backup and flash CyanogenMod, wipe dalvik, system, cache, and data, I should have CyanogenMod? Then will I be able to restore to that backup to be on the LG software?
secret.animal said:
Aosp are in zva radio firmware. Current is zvc radio with zvd firmware.
Sent from my Nexus 7 using Tapatalk
Click to expand...
Click to collapse
Okay, last night I downloaded the LS980ZVA_01.TOT from StorageCow and reset back to stock.
Download LS980ZVA_01.TOT
Open LGFlashTool
Open .DLL and .TOT
Put LS980 into Download Mode
Start LGFlashTool process.
Plug in LS980
Phone is flashed to stock ZVA
Run ioroot
Phone is rooted
Download AutoRec and Install
Run AutoRec to install TWRP recovery
Go into TWRP, make backup
Wipe System, Dalvik Cache
Wipe Data, Cache
Install cm-11-20140810-NIGHTLY-ls980
Wipe Dalvik & Cache
Install ls980_noOC-simple-v5 (dr87's Kernel)
Reboot
Get "LG Security Error"
I tried this in several different combinations from wiping dalvik and cache to not, to flashing Kernel and not, etc. none worked, and when I restored my backup, I was stuck in a black screen boot loop (just notification LED changing colors). So help me out here, please. I'd like to be able to switch easily between CyanogenMod and LG software. I know that I can get CM on ZV8, but I kinda want my Spark.
Can't have your cake and eat it too unfortunately. ZV8 you must go
Sent from my LG-LS980 using Tapatalk
official.xian said:
Okay, last night I downloaded the LS980ZVA_01.TOT from StorageCow and reset back to stock.
Download LS980ZVA_01.TOT
Open LGFlashTool
Open .DLL and .TOT
Put LS980 into Download Mode
Start LGFlashTool process.
Plug in LS980
Phone is flashed to stock ZVA
Run ioroot
Phone is rooted
Download AutoRec and Install
Run AutoRec to install TWRP recovery
Go into TWRP, make backup
Wipe System, Dalvik Cache
Wipe Data, Cache
Install cm-11-20140810-NIGHTLY-ls980
Wipe Dalvik & Cache
Install ls980_noOC-simple-v5 (dr87's Kernel)
Reboot
Get "LG Security Error"
I tried this in several different combinations from wiping dalvik and cache to not, to flashing Kernel and not, etc. none worked, and when I restored my backup, I was stuck in a black screen boot loop (just notification LED changing colors). So help me out here, please. I'd like to be able to switch easily between CyanogenMod and LG software. I know that I can get CM on ZV8, but I kinda want my Spark.
Click to expand...
Click to collapse
You need ZV8 modem, and you cannot flash Simplekernel onto CM11. There's not any stable kernels on Cm11 except for the CM11 kernel that is bundled.
Thanks. I finally just .TOT'd back to ZV8 and installed CM11 that way. Ugh that was a pain in the arse.
official.xian said:
Thanks. I finally just .TOT'd back to ZV8 and installed CM11 that way. Ugh that was a pain in the arse.
Click to expand...
Click to collapse
yea i spent 3 days doing this and bricked my phone bad by nor remembering to flash the kernel and not knowing about the zv8 radio.
i have read other post about the radio and it seems to throttle the speeds of your data more than anything
http://forum.cyanogenmod.org/topic/93947-which-radio-to-flash-for-latest-nightly-ls980/.
BTW for others reading you do not have to tot to zv8 just need to flash the zv8 modem.zip along with the ROM and gapps
So, I have stock zvd backup, but when I restore it, I'm stuck in boot loop. Currently on CM 11 with zv8. What do I need to do to boot into my previous stock zvd backup?
Try re flashing the zvd radio had same problem but with a cm11 backup reflashed the zv8 radio and booted no problem
---------- Post added at 04:17 PM ---------- Previous post was at 04:14 PM ----------
EMINENT1 said:
So, I have stock zvd backup, but when I restore it, I'm stuck in boot loop. Currently on CM 11 with zv8. What do I need to do to boot into my previous stock zvd backup?
Click to expand...
Click to collapse
Dethkid2008 said:
Try re flashing the zvd radio had same problem but with a cm11 backup reflashed the zv8 radio and booted no problem
Click to expand...
Click to collapse
Forgot to quote you hehe
I'm on zvd but instead of constantly tot'in my phone I just flash modem and radio to zv8 and then flash cm11 or any aosp rom
Sent from my LG-LS980 using Tapatalk
Dethkid2008 said:
yea i spent 3 days doing this and bricked my phone bad by nor remembering to flash the kernel and not knowing about the zv8 radio.
i have read other post about the radio and it seems to throttle the speeds of your data more than anything
http://forum.cyanogenmod.org/topic/93947-which-radio-to-flash-for-latest-nightly-ls980/.
BTW for others reading you do not have to tot to zv8 just need to flash the zv8 modem.zip along with the ROM and gapps
Click to expand...
Click to collapse
I tried flashing just the ZV8 modem ZIP with ROM and GApps and it never worked. Tried several times. Had to .TOT no matter what. I spend basically a month with a new phone because I had to .TOT so many times from trying just about everything I could. Could you post exactly what you did to be able to just flash the ZV8 modem?
official.xian said:
I tried flashing just the ZV8 modem ZIP with ROM and GApps and it never worked. Tried several times. Had to .TOT no matter what. I spend basically a month with a new phone because I had to .TOT so many times from trying just about everything I could. Could you post exactly what you did to be able to just flash the ZV8 modem?
Click to expand...
Click to collapse
Cm 11 -here
I prefer Snapshots
Zv8 Radio -Here
This link jumps straight to the download thanks to Zack Miller
Full gapps - here
Thanks to the Cyanogenmod Devs
My Setup
1. Sprint LG G2 LS980_ZVC_12.tot
2. TWRP v2.7.0.0 as custom recovery
Make sure that your .zip files (gapps, cm11, zv8 radio) are in the root of internal storage.
Boot to recovery and create a backup of system, boot, and data
Then do a wipe
Then you can (install) flash your .zip files, you can flash multiple at once
Select the cm11.zip first then the zv8radio.zip then the gapps.zip
Swipe to flash
Wipe dalvik/cache
Reboot make take up to 10 mins for cm11 to boot the first time
Reverse
Can I restore my backup, flash the most current radio (I'm assuming still ZVC) and restore to revert back to my stock LG setup?

[Q] HELP! i747 cant recover or flash

So my wifes i747 was running 4.0.4 so I decided to upgrade it for her a bit. Im not new to rooting and flashing roms so I figured why not just put a custom KK rom onto it in order to freshen it up a bit for her. I also have to add that it is a ATT S3 unlocked and being used on Tmobile network.
Came to the forums and downloaded SlimKat rom and installed CWM and flashed the new rom. Everything went fine, but in the end my wife didnt like the feel of it and just wanted a new phone. So I traded her my phone and got hers. Well i wasnt a huge fan of the SlimKat rom either, nothing particularly wrong I was just always a CyanogenMod fan. Im having issues right now because I cannot get it to flash any new ROMs without messing up. Ill either get an error in CWM saying it cant flash the new rom or it will Flash but then never leave the LOGO screen. Ive let it sit for 45mins before.
I was able to always restore to a backup and just keep using SlimKat, but just tonight Im no longer able to restore to the backup. CWM sits at "Restoring data... c7ac6bd9.0..." but never actually finishes the restore.
So am I bricked? or what should I try? and also can someone just tell me what Rom/Kernal/Modem I need to flash in order to get it working. Id really like to use the Cyanide L, with Shift kernal but im not sure which modem I need. Tmobile modem or Att modem and which number.
Any help would be great thanks.
Additional info: I wiped cache, dalvik, and system/data everytime I tried to flash new rom, I made a backup and saved to my external before the flash. It is carrier unlocked and rooted. model number is the i747. CWM is v6.0.1.2
Your CWM is outdated.
Flash the latest Philz tar.md5 file in Odin: https://goo.im/devs/philz_touch/CWM_Advanced_Edition/d2lte/
The latest KK ROMs will also need an updated bootloader and modem to function properly.

LTE Lollipop Issue fix

Thanks for xda members bofiana and Shehwaz for tinkering around and finding the fix!!
So the issue is how some members are reporting that their G3's after Lollipop installed via Autoprime's lollipop zip, stock lollipop untouch zip via twrp and KDZ, or pretty much and Lollipop upgrade; LTE is not sticking after reboot,standby for a couple hours, lost connection, airplane mode, and etc.. LTE would always switch back to gsm/wcdma by itself after rebooting,standby for a couple hours, lost connection, airplane mode, and etc.. Even after KDZ,TOT,TWRP restore stock zip to other firmwares like 10c,10m,10r, and 20b the issue is still present. Weirdly enough the only way to get LTE to stick was to flash BlissPop 2.3 rom. Once Blisspop was installed LTE would always stick and never switch back to wcdma/gsm! Here are my steps and the steps of bofiana and Shehwaz to get LTE back to stick.
Make sure you are rooted and have TWRP recovery installed before proceeding!
1.) Go get the Blisspop 2.3 rom, no need for Gapps, Put that rom on your EXTERNAL SD card
2.) Go to TWRP recovery and Backup your current rom (cache and efs is not needed so don't put a check mark on those) to your EXTERNAL SD card and reboot back to recovery
3.) Once back in TWRP recovery fctory wipe and advance wipe everything except for the EXTERNAL SD card since the BLisspop rom is on that and also your backup
4.) Then install Blisspop 2.3 rom
5.) Once booted into Blisspop 2.3 you will noticed in Mobile Network Setting that LTE is selected and even after a reboot LTE is still selected
6.) Once that is confirmed boot back into TWRP and restore your backup from before
7.) Once restore is finish go the mobile network settings and confirmed that LTE is selected by default if that is the case reboot your G3 again and check again to see if LTE is still selected and if it is the LTE switching problem is now fixed!!!!
NOTE:
If you want a clean install you do not need to backup your current rom, instead download the 20b stock untouched zip and just flash that after flashing Blisspop. Remember flashing the 20b untouched stock rom will get rid of TWRP and Root so if you want TWRP and root remember to do that after.
Also this fixed worked for us and I can't guarantee that it will work for all Lollipop LTE issues, but this is pretty safe bet to try if you are experiencing the LTE switch issues and no harm in trying!
Links:
Blisspop 2.3 rom: (By the way any version of Blisspop will work as I just tested out some of the latest Builds and LTE is still good)
http://forum.xda-developers.com/tmobile-lg-g3/development/rom-1-11-15-t3000137
Untouched Stock 20b zip:
http://forum.xda-developers.com/tmobile-lg-g3/general/firmware-t-mobile-lg-g3-t2818667
vel0city said:
Thanks for xda members bofiana and Shehwaz for tinkering around and finding the fix!!
So the issue is how some members are reporting that their G3's after Lollipop installed via Autoprime's lollipop zip, stock lollipop untouch zip via twrp and KDZ, or pretty much and Lollipop upgrade method besides OTA (which is stil no go yet); LTE is not sticking after reboot,standby for a couple hours, lost connection, airplane mode, and etc.. LTE would always switch back to gsm/wcdma by itself after rebooting,standby for a couple hours, lost connection, airplane mode, and etc.. Even after KDZ,TOT,TWRP restore stock zip to other firmwares like 10c,10m,10r, and 20b the issue is still present. Weirdly enough the only way to get LTE to stick was to flash BlissPop 2.3 rom. Once Blisspop was installed LTE would always stick and never switch back to wcdma/gsm! Here are my steps and the steps of bofiana and Shehwaz to get LTE back to stick.
Make sure you are rooted and have TWRP recovery installed before proceeding!
1.) Go get the Blisspop 2.3 rom, no need for Gapps, Put that rom on your EXTERNAL SD card
2.) Go to TWRP recovery and Backup your current rom (cache and efs is not needed so don't put a check mark on those) to your EXTERNAL SD card and reboot back to recovery
3.) Once back in TWRP recovery fctory wipe and advance wipe everything except for the EXTERNAL SD card since the BLisspop rom is on that and also your backup
4.) Then install Blisspop 2.3 rom
5.) Once booted into Blisspop 2.3 you will noticed in Mobile Network Setting that LTE is selected and even after a reboot LTE is still selected
6.) Once that is confirmed boot back into TWRP and restore your backup from before
7.) Once restore is finish go the mobile network settings and confirmed that LTE is selected by default if that is the case reboot your G3 again and check again to see if LTE is still selected and if it is the LTE switching problem is now fixed!!!!
NOTE:
If you want a clean install you do not need to backup your current rom, instead download the 20b stock untouched zip and just flash that after flashing Blisspop. Remember flashing the 20b untouched stock rom will get rid of TWRP and Root so if you want TWRP and root remember to do that after.
Also this fixed worked for us and I can't guarantee that it will work for all Lollipop LTE issues, but this is pretty safe bet to try if you are experiencing the LTE switch issues and no harm in trying!
Links:
Blisspop 2.3 rom:
http://forum.xda-developers.com/tmobile-lg-g3/development/rom-1-11-15-t3000137
Untouched Stock 20b zip:
http://forum.xda-developers.com/tmobile-lg-g3/general/firmware-t-mobile-lg-g3-t2818667
Click to expand...
Click to collapse
I am trying this method...
Worked for me, but i didn't do an advance wipe just a factory reset on step 3. When i loaded blissrom, it defaulted to 3g so i changed it to LTE.
Rebooted into recovery and restored the lollipop backup . LTE is now the default and working after rebooting. Thanks :highfive:
Thanks for mentioning me! I was getting really annoyed at the fact LTE wouldn't stick because I use Skype in the car a lot to speak to my S.O. and it would keep defaulting back to 4G whenever we hit a dead zone. I got mad and decided to try to see if going back to 10C fixed the issue and to no avail it didn't. I then went to blisspop rom and saw that it was working fine so then I was like let me try going to 20B now and see how that goes and voila it worked. Thanks for tinkering around some more and giving people a better answer than I did. You're doing the community a huge favor and I really appreciate it.
gaby04 said:
Worked for me, but i didn't do an advance wipe just a factory reset on step 3. When i loaded blissrom, it defaulted to 3g so i changed it to LTE.
Rebooted into recovery and restored the lollipop backup . LTE is now the default and working after rebooting. Thanks :highfive:
Click to expand...
Click to collapse
Hey glad it worked out for you!! Yeah this LTE issue was a headache!
Shehwaz said:
Thanks for mentioning me! I was getting really annoyed at the fact LTE wouldn't stick because I use Skype in the car a lot to speak to my S.O. and it would keep defaulting back to 4G whenever we hit a dead zone. I got mad and decided to try to see if going back to 10C fixed the issue and to no avail it didn't. I then went to blisspop rom and saw that it was working fine so then I was like let me try going to 20B now and see how that goes and voila it worked. Thanks for tinkering around some more and giving people a better answer than I did. You're doing the community a huge favor and I really appreciate it.
Click to expand...
Click to collapse
No problem man it was you who found it out first! So it was only right for me to give you the credit. Hopefully my thread will be make it easier for others in the community to find the fix.
vel0city said:
Thanks for xda members bofiana and Shehwaz for tinkering around and finding the fix!!
So the issue is how some members are reporting that their G3's after Lollipop installed via Autoprime's lollipop zip, stock lollipop untouch zip via twrp and KDZ, or pretty much and Lollipop upgrade method besides OTA (which is stil no go yet); LTE is not sticking after reboot,standby for a couple hours, lost connection, airplane mode, and etc.. LTE would always switch back to gsm/wcdma by itself after rebooting,standby for a couple hours, lost connection, airplane mode, and etc.. Even after KDZ,TOT,TWRP restore stock zip to other firmwares like 10c,10m,10r, and 20b the issue is still present. Weirdly enough the only way to get LTE to stick was to flash BlissPop 2.3 rom. Once Blisspop was installed LTE would always stick and never switch back to wcdma/gsm! Here are my steps and the steps of bofiana and Shehwaz to get LTE back to stick.
works for me now, xda is great . T-mobile tech support sucks.
Make sure you are rooted and have TWRP recovery installed before proceeding!
1.) Go get the Blisspop 2.3 rom, no need for Gapps, Put that rom on your EXTERNAL SD card
2.) Go to TWRP recovery and Backup your current rom (cache and efs is not needed so don't put a check mark on those) to your EXTERNAL SD card and reboot back to recovery
3.) Once back in TWRP recovery fctory wipe and advance wipe everything except for the EXTERNAL SD card since the BLisspop rom is on that and also your backup
4.) Then install Blisspop 2.3 rom
5.) Once booted into Blisspop 2.3 you will noticed in Mobile Network Setting that LTE is selected and even after a reboot LTE is still selected
6.) Once that is confirmed boot back into TWRP and restore your backup from before
7.) Once restore is finish go the mobile network settings and confirmed that LTE is selected by default if that is the case reboot your G3 again and check again to see if LTE is still selected and if it is the LTE switching problem is now fixed!!!!
NOTE:
If you want a clean install you do not need to backup your current rom, instead download the 20b stock untouched zip and just flash that after flashing Blisspop. Remember flashing the 20b untouched stock rom will get rid of TWRP and Root so if you want TWRP and root remember to do that after.
Also this fixed worked for us and I can't guarantee that it will work for all Lollipop LTE issues, but this is pretty safe bet to try if you are experiencing the LTE switch issues and no harm in trying!
Links:
Blisspop 2.3 rom:
http://forum.xda-developers.com/tmobile-lg-g3/development/rom-1-11-15-t3000137
Untouched Stock 20b zip:
http://forum.xda-developers.com/tmobile-lg-g3/general/firmware-t-mobile-lg-g3-t2818667
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gaby04 said:
Worked for me, but i didn't do an advance wipe just a factory reset on step 3. When i loaded blissrom, it defaulted to 3g so i changed it to LTE.
Rebooted into recovery and restored the lollipop backup . LTE is now the default and working after rebooting. Thanks :highfive:
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VoLTE working ?
sasidhar79 said:
VoLTE working ?
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yeah Volte is now working for me, it wasnt working before.
But i believe there are some requirements for VoLTE to work. Im not sure how accurate these articles are, but both have to be on the same network (T-Mo to T-Mo) and calling partner both have to have VoLTE-compatible phones.
https://www.yahoo.com/tech/apple-t-mobile-and-verizon-have-all-in-their-98352646864.html
https://www.yahoo.com/tech/wait-volte-doesnt-work-between-carriers-98414563869.html
gaby04 said:
yeah Volte is now working for me, it wasnt working before.
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Quick question how do you know if VoLTE is working? I mean I know I have it enabled in the settings but when making a call is there an indication that it is active?
vel0city said:
Quick question how do you know if VoLTE is working? I mean I know I have it enabled in the settings but when making a call is there an indication that it is active?
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When making a call, check the 4g LTE icon. if it switches to the 4g icon then that means it is not using VoLTE. If the icon stays on 4g LTE, it should be using VoLTE.
gaby04 said:
When making a call, check the 4g LTE icon. if it switches to the 4g icon then that means it is not using VoLTE. If the icon stays on 4g LTE, it should be using VoLTE.
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Gotcha sweet yeah VoLTE is definitely working on my end too!
Its a no-go for me. Couldn't even get blisspop to stick on LTE ... Only thing I could think of that could be preventing it is that I have zero cell coverage here at the house while attempting. I'll report back tomorrow after I give it a go at the office (where I have very good LTE coverage)
mjfrank said:
Its a no-go for me. Couldn't even get blisspop to stick on LTE ... Only thing I could think of that could be preventing it is that I have zero cell coverage here at the house while attempting. I'll report back tomorrow after I give it a go at the office (where I have very good LTE coverage)
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Yeah that could be the issue. Also if I may ask which method did you use to update to lollipop?
I tried on both my backup of autoprime's zip compilation and my lg support kdz...no go for both :/
mjfrank said:
I tried on both my backup of autoprime's zip compilation and my lg support kdz...no go for both :/
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What I did that helped, because I was in the same position as you is that I KDZ'd back to 10C and then rooted via stumproot and installed Blisspop and then I KDZ'd back to 20B and my issue was gone.
mjfrank said:
I tried on both my backup of autoprime's zip compilation and my lg support kdz...no go for both :/
Click to expand...
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Either do what Shehwaz said or you can just kdz with 20b and restore back to stock lollipop. After that root and install twrp, then install Blisspop. Don't restore from your backup from a previous rom. Make sure when you are in Blisspop that LTE stays before flashing stock 20b again. I'm pretty sure that will fix your issue.
Also when you switch to LTE manually does it stay? This method is for those who can at least get their LTE on and stay on when using it, but have it go away either from rebooting or after a long sleep period. If you can't get LTE via manually selecting you have a different issue and this fix might not work.
After flashing blisspop, do I clean flash 20b stock or just flash without wiping?
Papote3 said:
After flashing blisspop, do I clean flash 20b stock or just flash without wiping?
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Just wipe it to be certain, also before you flash the stock 20b make sure in Blisspop that your LTE is sticking.
vel0city said:
Gotcha sweet yeah VoLTE is definitely working on my end too!
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Click to collapse
VoLTE started to work after the blisspop LTE fix. So both problems are related.
Sent from my LG-D851 using XDA Free mobile app
vel0city said:
Just wipe it to be certain, also before you flash the stock 20b make sure in Blisspop that your LTE is sticking.
Click to expand...
Click to collapse
OK, reporting back:
Clean flash Blisspop (wipe everything but ExtSD)
After trying everything to tick the "LTE bug” in bliss, it never lost LTE (good sign)
Went back to TWRP
wiped everything again except for ExtSD
Flashed 20b Untouched ROM, then SuperSU, then TWRP
after successful boot of 20b, LTE stuck no matter what I tried.
THANKS GUYS, this is awesome
Going to do some more testing tomorrow, but it looks promising
Also, VoLTE didn't work on my first call, but that's probably bc its not activated in my area (Puerto Rico)

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