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I have done stupid things in my life, but this may top them.
I purchased an used AT&T Optimus G Pro (E980) few days ago. I bought it unlocked and was using it on T-Mobile network without any problem. I live around the area where I get LTE. AND I was getting LTE. I was successful in rooting it and was in the process of installing a custom recovery when I softbricked. No problem, right?
1. I first tried to use (TOT) found at http://forum.xda-developers.com/showthread.php?t=2420219 to get back to E980 stock. I could not get past 25% no matter what.
2. I then used (KDZ) to install F240L firmware. Dumb. I know, but at the time I did not know better.
3. I then used (KDZ) again to install E988. I had signal but only 2G speed.
4. I then used (TOT) to flash E980 stock. Great, but no signal. I tried various stuffs to get the signal working. I flashed all AT&T modems found. I tried installing different custom ROMs. I tried using dial pad method. I tried modifying bulidprop, but nothing is working.
5. I have also tried flashing Taiwan KDZ, Hong Kong KDZ, Central America KDZ, Panama KDZ, and German KDZ. I also tried 3 different AT&T TOT files. I can get signal on Taiwan & Hong Kong KDZ, but no signals on others.
6. I have successfully rooted my phone using Towelroot. I have installed SuperSu, BusyBox, an GPRO Kitkat Recvery.
6. Also, when I tried to flash different recoveries, it fails. PhilZ Touch CWM fails, and my phone is being recognized as the LG F240L and does not let me install at all even though I fully flashed Taiwan KDZ file (E988). LG 240L KDZ file is the first one I flashed when the AT&T TOT failed to flash.
I have no idea what I can do to get my LTE back. If someone can give any advise to get my modem work right, I would appreciate it. I am game to flashing any fimwares or trying different roms or anything.
Thanks.
Any help or suggestion is really appreciated.
qcshin said:
I have done stupid things in my life, but this may top them.
I purchased an used AT&T Optimus G Pro (E980) few days ago. I bought it unlocked and was using it on T-Mobile network without any problem. I live around the area where I get LTE. AND I was getting LTE. I was successful in rooting it and was in the process of installing a custom recovery when I softbricked. No problem, right?
1. I first tried to use (TOT) found at http://forum.xda-developers.com/showthread.php?t=2420219 to get back to E980 stock. I could not get past 25% no matter what.
2. I then used (KDZ) to install F240L firmware. Dumb. I know, but at the time I did not know better.
3. I then used (KDZ) again to install E988. I had signal but only 2G speed.
4. I then used (TOT) to flash E980 stock. Great, but no signal. I tried various stuffs to get the signal working. I flashed all AT&T modems found. I tried installing different custom ROMs. I tried using dial pad method. I tried modifying bulidprop, but nothing is working.
5. I have also tried flashing Taiwan KDZ, Hong Kong KDZ, Central America KDZ, Panama KDZ, and German KDZ. I also tried 3 different AT&T TOT files. I can get signal on Taiwan & Hong Kong KDZ, but no signals on others.
6. I have successfully rooted my phone using Towelroot. I have installed SuperSu, BusyBox, an GPRO Kitkat Recvery.
6. Also, when I tried to flash different recoveries, it fails. PhilZ Touch CWM fails, and my phone is being recognized as the LG F240L and does not let me install at all even though I fully flashed Taiwan KDZ file (E988). LG 240L KDZ file is the first one I flashed when the AT&T TOT failed to flash.
I have no idea what I can do to get my LTE back. If someone can give any advise to get my modem work right, I would appreciate it. I am game to flashing any fimwares or trying different roms or anything.
Thanks.
Any help or suggestion is really appreciated.
Click to expand...
Click to collapse
Hello, I hope you already solved your problem by the time I'm writing this, but if you haven't, here is some extras to consider.
It could be funny to think about it, but it happens to everyone, we do everything we should, and we forget the basic stuff.
For basic stuff I'm referring to going into network preferences and setting up 4G/LTE as preferred network, you may also try to scan networks and see if a 4G/LTE network is on the list for your carrier, and obviously select it, if you don't see 4G networks then there could be an issue with your modem-rom combination, try something else.
Other thing is the APN, remember to set up the proper APN, maybe your phone had the proper setup when it came to you first but you wiped it all when you started flashing roms.
There are other advanced options that I haven't used to try to set 4G as preferred networks, but since I don't have 4G with my carrier I haven't had your problems to know they are, be sure to google them or search here on XDA.
Hope this helps bro!, let us know what works for you of if you still need ideas.
Still looking
Jose-MXL said:
Hello, I hope you already solved your problem by the time I'm writing this, but if you haven't, here is some extras to consider.
It could be funny to think about it, but it happens to everyone, we do everything we should, and we forget the basic stuff.
For basic stuff I'm referring to going into network preferences and setting up 4G/LTE as preferred network, you may also try to scan networks and see if a 4G/LTE network is on the list for your carrier, and obviously select it, if you don't see 4G networks then there could be an issue with your modem-rom combination, try something else.
Other thing is the APN, remember to set up the proper APN, maybe your phone had the proper setup when it came to you first but you wiped it all when you started flashing roms.
There are other advanced options that I haven't used to try to set 4G as preferred networks, but since I don't have 4G with my carrier I haven't had your problems to know they are, be sure to google them or search here on XDA.
Hope this helps bro!, let us know what works for you of if you still need ideas.
Click to expand...
Click to collapse
Thanks for your suggestion! I have an option to select GSM/WCDMA/LTE auto which has been selected. I have also manually entered the correct APN setting. I think I had messed up my phone when I flashed F240L firmware, but I am still looking for a way to get it start working properly again if possible.
Sorry i do not speak english, I use google translator
I think you need the E980 stock room
I think the following link can help you:
1. TOT, dll firmware E980:
lgviet.com/forum/threads/tong-hop-KDZ-firmware-tot-and-dll-for-F240-LSK-e988-e980.17058
2. Soft-Brick:
lgviet.com/forum/threads/huong-dan-soft-brick-Vuot-loi-kdz.14917
3. LG G PRO 4.4.2 - Root - Recovery - KDZ.
lgviet.com/forum/threads/moi-thu-ve-lg-g-pro-4-4-2-root-recovery-kdz.14841
lgviet.com/forum/threads/root-recovery-stock-4-4-2-kitkat-g-pro-f240l-s-k.15539
nguyentrung84 said:
Sorry i do not speak english, I use google translator
I think you need the E980 stock room
I think the following link can help you:
1. TOT, dll firmware E980:
lgviet.com/forum/threads/tong-hop-KDZ-firmware-tot-and-dll-for-F240-LSK-e988-e980.17058
2. Soft-Brick:
lgviet.com/forum/threads/huong-dan-soft-brick-Vuot-loi-kdz.14917
3. LG G PRO 4.4.2 - Root - Recovery - KDZ.
lgviet.com/forum/threads/moi-thu-ve-lg-g-pro-4-4-2-root-recovery-kdz.14841
lgviet.com/forum/threads/root-recovery-stock-4-4-2-kitkat-g-pro-f240l-s-k.15539
Click to expand...
Click to collapse
Thanks for your help. I had already tried them all. Nothing is working.
can u tell us which model is it by removing battery and reading the label?
Downgrading and Upgrading questions
Hello XDA.
I've got the LG G3 D855 and I got it with android 4.4.2 and than I upgraded it to lollipop (right now I'm with v20H) and I knew that the device is capable with 4G so I talked with my carrier and I finally had the 4G enabled on my phone.
But I suddenly faced the bugs of lollipop and I decided to downgrade back to 4.4.2, it was alright but the 4G capability dissapeared of anything even in the menu there was no option for LTE so I upgrade back for lollipop again and it was ok and I got my 4G back :good:
So my question is why did it happened ? and I want to know what to do if i'll downgrade back again and still have the 4G enabled and not lose it.
Thank you.
Amit Yeffet said:
Hello XDA.
I've got the LG G3 D855 and I got it with android 4.4.2 and than I upgraded it to lollipop (right now I'm with v20H) and I knew that the device is capable with 4G so I talked with my carrier and I finally had the 4G enabled on my phone.
But I suddenly faced the bugs of lollipop and I decided to downgrade back to 4.4.2, it was alright but the 4G capability dissapeared of anything even in the menu there was no option for LTE so I upgrade back for lollipop again and it was ok and I got my 4G back :good:
So my question is why did it happened ? and I want to know what to do if i'll downgrade back again and still have the 4G enabled and not lose it.
Thank you.
Click to expand...
Click to collapse
can somebody please help me an answer please.
Amit Yeffet said:
can somebody please help me an answer please.
Click to expand...
Click to collapse
If you downgrade from Lollipop to Kitkat your modem is gone that's why you dont have network now ,you have to download the KitKat modem for your firmware version and all will be fine
Flash it in custom recovery
ludoke said:
If you downgrade from Lollipop to Kitkat your modem is gone that's why you dont have network now ,you have to download the KitKat modem for your firmware version and all will be fine
Flash it in custom recovery
Click to expand...
Click to collapse
Wrong answer. If the "Modem" was gone, he couldn't get any service. So, modem is OK.
You can activate LTE manually;
1- Go to Dialer
2- Type *#*#4636#*#*
3- Select Phone Information
4- You should see a long box end of page. Change the section in box to one of LTE modes.
Hello,
I followed this guide to restore my sprint LG G2 to stock Kitkat 4.4.2. Everything went fine, the phone is working, the only problem I have is that I can't connect to any network. The phone is not recognizing any of the local network providers. I bought this phone on ebay and it came with a custom rooted rom installed on it, so I decided to "clean up the mess" and restored stock kitkat. As I mentioned before everything went fine, but the network is not working (it was working with the android version before i restored stock 4.4.2). Maybe its because I'm not living in the USA (I'm from Bosnia/Europe). Should I flash a different radio on it? The phone is updating atm with OTA and I'm pretty sure that the updates wont help. Did anyone else had these issues? Any help would be highly appreciated.
Update: My phone just got upgraded to Lollipop, but the network issue is still present
Update 2: I just reinstalled "cm-12.1-20151031-NIGHTLY-ls980" Lollipop 5.1.1. and it had no problems to find all the networks in my area, so this clearly has to do with stock LG android 4.4.2.
When you say you can't connect to network, are you referring to your mobile carrier network, or like WiFi?
If it's your mobile carrier that you can't connect to, you might need to switch your radio. Take a look at this guide and the section about using radio switcher: http://forum.xda-developers.com/sprint-g2/help/how-sprint-lg-g2-ls980-to-t-mobile-t3230685
Fuzz1303 said:
When you say you can't connect to network, are you referring to your mobile carrier network, or like WiFi?
If it's your mobile carrier that you can't connect to, you might need to switch your radio. Take a look at this guide and the section about using radio switcher: http://forum.xda-developers.com/sprint-g2/help/how-sprint-lg-g2-ls980-to-t-mobile-t3230685
Click to expand...
Click to collapse
Hey there. Sorry for the late response. I kinda gave up on making the stock LG ROM work, which is why I kept on using CM12.1 . What I was referring to was my mobile carrier. The phone has no problems connecting to any WiFi signal.
I didn't try to flash any radios at all after restoring the LG G2 stock ROM. Maybe I should have tried one of the radios from this CM12.1 for LG G2 tutorial. Here is a direct LINK to the full list of LG G2 radios, where I downloaded the radio for my phone. I'm not sure if the other LS980 Radios would work on my device. There are 4 different radios available for the LG G2 LS980.
Do you think flashing one of these radios would help solving this problem after restoring the LG stock ROM?
heyho!
the last week i nstalled the MM version for the LG G4 and flashed the required bootloader/modem/boot. After having tested the rom and being unconfident with it, i downgraded to a 5.1.1 Version and flashed again bootloader/modem/boot.
Now i got lots of Signal Dropping during the usage, cant even figure out, but i guess it has to do something with the downgraded stuff. Even tried to upgrade to MM again, but after having flashed the Bootloader modem stuff, the problem still exists. I even got only H+ in Areas where i former had LTE.
Did somebody got these problems too and can tell me how to fix it?
Hello Flooi,
for if you were able to fix? also I have your same problem and I'm going crazy.
I'm going crazy too. G4 finds networks, but no 3G networks. What can I do? I'm at Genisys Rom.
Dear all,
I got a strange situation and I've tried several options already, but I'm lost.
My LG G3 D851 (T-Mobile) is currently running on Lineoage OS 8.1 and my 4G is not working.
Even though I selected 4G preferred. Highest what I get is H+.
I've found a modem file, but that screwed up my 4G and 3G completely.
It doesnt matter which custom rom I select it will not allow me to work with 4G.
If I go back to the original Android 6 Rom I got 4G.
Who got an idea to get this fixed?
Is your IMEI still There ? Does your Phone Show Up at qpst? You did Not Read
anything i grüess so you probably havent Backes Up your efs? Ist there No Connection at all? Flashing Roms will Not fix your problem. But you should Go to Marshmallow Stock For now.
Custom Roms only Work with 21c and lower maybe you Just flashed The Wrong Modem. Google For The XDA LG G3 Modem thread
tritratrulala390 said:
Is your IMEI still There ? Does your Phone Show Up at qpst? You did Not Read
anything i grüess so you probably havent Backes Up your efs? Ist there No Connection at all? Flashing Roms will Not fix your problem. But you should Go to Marshmallow Stock For now.
Custom Roms only Work with 21c and lower maybe you Just flashed The Wrong Modem. Google For The XDA LG G3 Modem thread
Click to expand...
Click to collapse
My IMEI is still tere.
Dont know what you mean with QPST.
I've got backups and I can go back to any state, but I dont know what I should even consider check the EFS?
I'll check the Modem thread.
Maybe I can find a solution in there.
tritratrulala390 said:
Custom Roms only Work with 21c and lower maybe you Just flashed The Wrong Modem. Google For The XDA LG G3 Modem thread
Click to expand...
Click to collapse
The 21C thing is incorrect. Each variant of the G3 has their own set of modems. There is no 21C for the D851.
If memory serves we had 10 series (KitKat), 20 series (Lollipop), and 30 (Marshmallow). I'm currently using 30D modem from last time I had a factory stock installed. I get 4G/LTE on all of the installed ROMs (KK, LP, MM, N, O). Even when I was on 20G they were all good, though I didn't have Oreo at the time.
@Mr-Dutch, I have a small collection of D851 modems up on Mega. Since your last stock was Marshmallow I figure the ones to try, if you elect to do so, is 30D or 30E.
https://mega.nz/#F!WVRWmDII!oeZ17walw3sOi71mDkCKrw
LG G3 D851, Mahdi v2.9 ROM (4.4.4), microG (NoGApps), MultiROM, XDA Legacy
Yeah my Bad that was for The 855. And there IT says in The Post that IT only works Up to 21c but Not sure If thats still a Thing.
So have you tried flashing a Modem? And does IT Work now?