Develop Bugs

how can I find out which version of e988 I have

This might be a noob question, how can I tell which version of e988 I have? I have a optimus g pro that I got from doha Qatar, trying to flash back to stock with lg flash tool, I need to find out which version of the e988 I have so that I can download the correct files. Another question is that no matter when I was on stock or with custom Rom, I am not able to get the speed pass edge. Does my phone not have the T-Mobile 3g/lte frequencies? Is that why I'm stuck on edge speed with tmobile network? Help please, thanks in advance.

You will need to use e980 in the US to get 3G/4G speeds on TMobile or ATT. E988 does not support the necessary frequency bands for US carriers. If you can exchange it do it.
Sent from my N550JV using Tapatalk

No wonder I couldn't get any 3g/4g speed..... it's little too late for the exchange, would you tell me how I can tell which version of e988 I.have so that i can download the right files.

jdaclutch said:
This might be a noob question, how can I tell which version of e988 I have? I have a optimus g pro that I got from doha Qatar, trying to flash back to stock with lg flash tool, I need to find out which version of the e988 I have so that I can download the correct files. Another question is that no matter when I was on stock or with custom Rom, I am not able to get the speed pass edge. Does my phone not have the T-Mobile 3g/lte frequencies? Is that why I'm stuck on edge speed with tmobile network? Help please, thanks in advance.
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I have a usefull link but i can't post it i'm new user

mhd.abbas.94 said:
I have a usefull link but i can't post it i'm new user
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Click to collapse
here the second post http://forum.xda-developers.com/showthread.php?t=2403436 gives you the link. Just paste into the browser with your IMEI at the end, and youll download the correct kdz file for your phone.
http://forum.xda-developers.com/showpost.php?p=44575856&postcount=2

Reverting from a Remote Unlocked Firmware

Hi XDA members,
im new to this and just wanted confirmation from more experienced users. I have a LG G7 sprint variant which was recently remote unlocked via ebay to an unlocked firmware which prevents me from using it on sprint or any cdma mvno.
I contacted the seller about reverting the changes but he says its impossible. He used something called LG Octopus tool.
Any help will be greatly appreciated.

Truffle1991 said:
Hi XDA members,
im new to this and just wanted confirmation from more experienced users. I have a LG G7 sprint variant which was recently remote unlocked via ebay to an unlocked firmware which prevents me from using it on sprint or any cdma mvno.
I contacted the seller about reverting the changes but he says its impossible. He used something called LG Octopus tool.
Any help will be greatly appreciated.
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Click to collapse
I think flashing the sprint firmware will fix the issue. Since it is not available for download, you have to take it to sprint ( one user experienced the same issue with sprint G7 https://forum.xda-developers.com/lg...-bootloader-root-models-t3928505/post79658233 ). btw am not using sprint variant.

Ordered a Samsung S20+ AT&T Locked, update on Cricket?

I am planning to take a AT&T locked SM-G986U to Cricket. My question is simple. How do I update the firmware?
My current LG G8 refuses to update and my understanding is I need an active AT&T simcard.
However, I found this: https://www.sammobile.com/samsung/g...M-G986U1/ATT/download/G986U1UEU1DUB7/1491717/
I found out that SM-G986U1 firmware should work on SM-G986U.
Will that above firmware work on my incoming SM-G986U? Will it allow VoLTE? Has anyone tried this?
I need VoLTE on Cricket and I know the AT&T firmware allows for that. But the above firmware is for the U1 not the U(should be cross-compatible) and says it's the AT&T version.
Can anyone please confirm this? Thank you so much for any and all help, advice, or suggestions.
If anyone can or wants to try or test this I'd love to know the results.

yes it will work and you get updates from samsung

So using that above would get me VoLTE? WiFi Calling would be nice but I need VoLTE. Just still a bit confused, thanks for your answer and help.

i get both but i have a att phone on att and running the u1 firmware

Ok, yeah mine is an AT&T model and I'm not sure it'll arrive up to date. We'll have to wait and see. thanks!

LG G8 Sprint unlocked stuck at april 2019 update

HI,
I bought a Sprint Unlocked LG G8 , love the phone, but it stuck at g820u10i 2019 firmware , ota doesnt work , it just tells me Im already up to date , I reside overseas but I can buy a sprint sim from eBay if that works (maybe it is similar to the att ones?) .
Also sprint doesnt releases their kdz´s so thats another problem , I would like to know if theres a way to get the official otas directly from the phone .
I have already tried setting it up without the sim card , and then turning on wifi and it didnt work.
Any help would be appreciated , cheers.

Tried with LG Bridge and LG Support , powered on and in download mode.
Still nothing
LG Bridge says that couldnt find the device
LG Support Tool says that the device is up to date

I have the same problem

i try to cross flash the latest US OP KDZ (G820UM20j_00_USC_US_OP_0607) or CA OP KDZ(G820UM20j_00_OPEN_CA_OP_0120) on the phone but the LG UP will mention not allow to change a US sprint to US OP(CA OP) and could not proceed the flashing.

gfpanda said:
i try to cross flash the latest US OP KDZ (G820UM20j_00_USC_US_OP_0607) or CA OP KDZ(G820UM20j_00_OPEN_CA_OP_0120) on the phone but the LG UP will mention not allow to change a US sprint to US OP(CA OP) and could not proceed the flashing.
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I'd suggest you both look at this thread.
@ThatLatinGuy if you're out of the country, no reason to want to keep Sprint firmware so might as well crossflash it to a rom that might work where u are.
cheers

Thanks Bro, let me try it.

LMG820UM3 on US Mobile (Verizon) - Need Help

Hello,
I will try to keep this short and sweet.
I am on US Mobile using the black sim (verizon towers) and currently have a LG v30 that no longer can make calls due to Verizon shutting down cdma beginning of 2023.
I have my brothers Lg G8 ThinQ phone purchased from US Cellular. It is now rooted and I followed this guide to add LTE support for other carriers:
[GUIDE] [NO ROOT REQUIRED] [EPIC UPDATE] How to add VoLTE support for other carriers to the G8 (and other Qualcomm powered LG devices too!)
This guide will not work if you are running Android 12 :( I'm gonna keep the intro simple, been a longtime user here on XDA, and recently I found that my T-Mobile LG G8 only supported VoLTE and VoWifi on, you guessed it, T-Mobile! So I did some...
forum.xda-developers.com
I used the mbn files provided from the guide and loaded a few of the US carriers. Upon putting in the sim, and trying to change settings to get it to work, I can only get data to work but texting/calling (in/our) does not work at all. When attempting to make a call, the 4G indicator also disapears. I contacted US Mobile thinking it maybe was a APN issue but they stated on their end that the phone is incompatible.
Not sure what else to try. My only hunch is maybe reloading mbn files from a downloaded KDZ but I have no clue if that will work (also to download 5 gigabytes takes a few days for me).
Any help is greatly appreciated.
attached is both the phone info and a snapshot of PDC of it showing VZN got activated on the phone with the sim in it.
EDIT:
For if anyone else comes across this. My solution was to crossflash (using the guide in the LG G8 fourms) the open market KDZ and I went with G820QM30c_00_NAO_US_OP_0103.kdz as I had android 11 already installed and that it was the A11 version download the most from here: https://lg-firmwares.com/lg-lmg820qm-firmwares/
I did have to correct my FTM partition but that crossflashing guide links to some good solutions.
*Note: Only issues that I have seen with the version i flashed is i cant add an APN. The button is just missing so had to install an app to view it, and when receiving gifs, they turn into pictures only. both things I can live without as not volte works on verizon (us mobile).

So, which rom would normally work with that carrier? I'd guess the us open version would work, why not just flash that on the G8? I've no idea what bands us cellular rom supports, but I'd trust the correct rom (for the current carrier) to work rather than following that thread to 'add bands'.
I used that thread once, didn't accomplish what I wanted. Not to say it doesn't work, I didn't try that long. But have flashed numerous roms re diff carriers, that always does what it should re correct bands.

Frankly, I am not sure if my reply will be helpful, and I know nothing about the US Mobile specifically, but just wanted to comment as an owner of a G8 originally from the US Cellular. Feel free to ignore this if it seems irrelevant...
I bought my phone second-hand with an original US Cellular A11 stock ROM. Later cross-flashed it to the Canadian Open when A12 became available. Rooted with Magisk. I am using the phone on the Rogers network in Canada. On both ROMs I have no issues with data, voice and text - everything works, including concurrent voice calls and data usage.
A (possibly) dumb question - have you tried the original US Cellular ROM as is, before diving into the guide to add LTE support for other carriers? Is there a chance that it would just work?
Regarding the previous reply, I couldn't find a US Open ROM available for the 820UM models (only for QM), but you could try Canadian Open, for example. My point is to try and make it work with one of the ROMs as is, without messing with some extra steps that may or may not work.

AsItLies said:
So, which rom would normally work with that carrier? I'd guess the us open version would work, why not just flash that on the G8? I've no idea what bands us cellular rom supports, but I'd trust the correct rom (for the current carrier) to work rather than following that thread to 'add bands'.
I used that thread once, didn't accomplish what I wanted. Not to say it doesn't work, I didn't try that long. But have flashed numerous roms re diff carriers, that always does what it should re correct bands.
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Yeah, I guess i understood that as being able to add the functionality. But after more research, flashing a different rom is more likely to be the solution, which confuses me about adding profiles if it doesn't truly work?
kt-Froggy said:
Frankly, I am not sure if my reply will be helpful, and I know nothing about the US Mobile specifically, but just wanted to comment as an owner of a G8 originally from the US Cellular. Feel free to ignore this if it seems irrelevant...
I bought my phone second-hand with an original US Cellular A11 stock ROM. Later cross-flashed it to the Canadian Open when A12 became available. Rooted with Magisk. I am using the phone on the Rogers network in Canada. On both ROMs I have no issues with data, voice and text - everything works, including concurrent voice calls and data usage.
A (possibly) dumb question - have you tried the original US Cellular ROM as is, before diving into the guide to add LTE support for other carriers? Is there a chance that it would just work?
Regarding the previous reply, I couldn't find a US Open ROM available for the 820UM models (only for QM), but you could try Canadian Open, for example. My point is to try and make it work with one of the ROMs as is, without messing with some extra steps that may or may not work.
Click to expand...
Click to collapse
So yeah, after more research, looks like flashing either the open market or the verizon specific variant would work. I did try it first without any modifications to the us cellular rom but still not everything worked. I have a Lg v30, but few things that are no longer ideal was the recent CDMA discontinuation from verizon at the start of this year, also had recently dropped it and the screen flashes bright white light in your eyes at random times... so lol, not ideal.
What Im probably going to be trying when I get the time is flashing the open market, and if that dosent work, it seems the verizon specific would.
Thanks both for the inputs!