Can you install the Tmo software on an AT&T variant? - T-Mobile LG G5 Questions & Answers

Hi All,
Is there any way to essentially put Tmo version of the software on the AT&T LG G5?
I gave my AT&T G5 to a friend, with the unlock code, and they've been fine on Tmo, but I've noticed they are not getting the AT&T updates (Sept 30). In additional I see the Tmo Updates are further ahead than AT&T anyways.
Since they are on Tmo, is there anyway to flash the stock Tmo software on?
Thanks in advance!

I hear its possible but you would run into so many problems such as bootloops and bricks. Its best advised you dont flash t mobile firmware on it. I remember when I had an LG G2 from verizon someone made a stock custom rom the the t mobile variant. That would be your best option, to make a custom rom from the t mobile g5 and flash it to the at&t variant. But since it will be a custom rom, you will get notifications saying you have an ota but they never work

Related

[Q] "Not Registered" Error - Can't Update

Before I begin, I'd just like to say that I've reviewed numerous threads regarding this topic, both here and on other forums, and I have yet to find a single conclusive solution to my issue, which is why I'm posting.
I recently purchased an AT&T D800 G2 off the internet because I was informed AT&T uses the same frequencies as Canada's Telus. This is true, and the D800 runs on my Telus frequencies with 4G and 3G HSPA, but I found one annoying niggle (besides all the useless AT&T Bloatware that I can't remove), and that's the fact that I can't update my software.
Namely, it's the infamous "Not Registered" issue that the D800 gives me whenever I try to update. I've tried several fixes, but none have really helped me. I'm still running 4.2.2 JellyBean, Software Version D80010o. IIRC, latest JellyBean version is D80010q, so that means I'm not even running the latest JellyBean version.
I've read about one fix that I have not yet tried, and that is to use an Active AT&T Sim to try and allow it to update, since AT&T pushes out their own updates to devices on their network. Since I live in Canada and AT&T doesn't exist up here in the North, I was contemplating getting a GoPhone Sim (Their Prepaid division?) off eBay and using that just to get the Update. Would that work?
And if not, are there any ways of getting KitKat, and, later down the road, Lollipop without going down the Root path?
Thanks in advance, guys.
I don't know how to fix the ota issue, but you could get it on kitkat by searching for the d80020c tot file on xda and flash it with the lg flash tool. Just take the sim out during this process, I've done this and killed my sim.
Huh, okay.
I've definitely seen some threads that recommend flashing a new ROM.
The thing is (newb question)I rather like the LG Optimus UI and I'm not sure if flashing these things would revert me to vanilla android. Would it? I have no experience and since I don't have a warranty I guess I could try root if it would help.
No, it would install the kit Kat firmware provided by AT&T.
Sent from my LG-D800 using XDA Free mobile app
Awesome.
I'm just glad there's a way to bypass OTA issued by At&t.
Thanks for all your help!
P.S. Would flashing the ROM void warranty?

D850 on Tmobile - Software not updating?

So I recently bought a brand new, unlocked AT&T D850. Right now it's running version 4.4.2 and I know Lollipop is out there already, yet trying to update OTA tells me I'm on the latest software, as does trying to update on the PC Suite. The LG Support Tool doesn't list the AT&T D850 on the phone options for some reason.
Is there anything I can do here? Is something wrong because I'm on Tmobile using an ATT phone?
Lancered said:
So I recently bought a brand new, unlocked AT&T D850. Right now it's running version 4.4.2 and I know Lollipop is out there already, yet trying to update OTA tells me I'm on the latest software, as does trying to update on the PC Suite. The LG Support Tool doesn't list the AT&T D850 on the phone options for some reason.
Is there anything I can do here? Is something wrong because I'm on Tmobile using an ATT phone?
Click to expand...
Click to collapse
It will ONLY update if you have an active AT&T sim in it. Or unless you use a custom rom.
Sent from my iPhone using Tapatalk
Ah...what I was thinking...
Thanks.

D850 sim locked to AT&T - questions about sim unlocking and flashing T-Mo ROM

I recently received an AT&T G3 from a friend and would like to use it on T-Mobile, with T-Mobile's wi-fi calling enabled since I get terrible signal inside my home. The phone is currently sim locked to AT&T. I do have it rooted but that's as far as I've gone.
I have two questions:
1) what is the best way to sim unlock? does anyone recommend a service? I'd like to get this done quickly so that I can begin messing with it on T-Mobile.
2) will I be able to install a stock T-Mo ROM on the device to access T-Mo specific features/apps, and how would I go about doing that? I am familiar with flashing ZIPs and reverting back to stock, but I've never gone cross-carrier before. Does it even matter?
thescinema said:
I recently received an AT&T G3 from a friend and would like to use it on T-Mobile, with T-Mobile's wi-fi calling enabled since I get terrible signal inside my home. The phone is currently sim locked to AT&T. I do have it rooted but that's as far as I've gone.
I have two questions:
1) what is the best way to sim unlock? does anyone recommend a service? I'd like to get this done quickly so that I can begin messing with it on T-Mobile.
2) will I be able to install a stock T-Mo ROM on the device to access T-Mo specific features/apps, and how would I go about doing that? I am familiar with flashing ZIPs and reverting back to stock, but I've never gone cross-carrier before. Does it even matter?
Click to expand...
Click to collapse
If the phone was fully paid off you can unlock it for free on att website.
No you cannot. You'll run into big issues and or soft brick you can only flash what your model is. You may flash a custom D851 based custom rom if that's available if someone's built it for the D850 but you cannot flash other models stock roms.
Sent from my iPhone using Tapatalk
hyelton said:
If the phone was fully paid off you can unlock it for free on att website.
No you cannot. You'll run into big issues and or soft brick you can only flash what your model is. You may flash a custom D851 based custom rom if that's available if someone's built it for the D850 but you cannot flash other models stock roms.
Sent from my iPhone using Tapatalk
Click to expand...
Click to collapse
Thank you hyelton. Have you heard of any D851 based ROMs with wifi calling enabled that will work on the D850?
thescinema said:
Thank you hyelton. Have you heard of any D851 based ROMs with wifi calling enabled that will work on the D850?
Click to expand...
Click to collapse
Sorry I have not, never had to do so but I have seen it around before. Check out the development section for the D850 you may find something there custom rom wise.
Sent from my iPhone using Tapatalk

Non at&t rom on at&t device.

Dear ,
I have an unlocked LG G3 D850. It had the at&t and it was causing problems with day to day use. I put twrp, cloudyg3, and rooted. Of course 5.0 is not good, so I want to either revert back to 4.4 or 6.0, but without at&t bloatware.
My question is, can I flash the D855 on the D850? This is not a device specific question. Does at&t change the hardware? Can I flash a non at&t on an at&t device? I would flash the new 6.0 at&t but do not want the bloatware. I would also like to keep it like stock lg, without the CM launcher or that stuff.
Again, this is a general question and not device specific.
Thank you modders!
(I researched and saw no answer to my question anywhere)

Verizon S8+ G955U. BL V3 Can I get All the AT&T Bands Somehow?

Ok so i have a G955U Verizon unlocked S8+. I want to use it on AT&T but i was told that verizon had disabled a few of the AT&T bands. I dont care about rooting, but if i could root and get all the AT&T bands and no bloat ware that would be above and beyond. I would mostly be happy with just having the capability to use all the bands. So i saw PartCyborgRom had a custom rom that has just recently been updated to work with the v3 BL. Would this rom give me access to all of my AT&T bands? Sorry im a newb haha 15+ year forum creeper, first time poster. Need some help guys this new stuff is over my head! Cheers and thanks!
EDIT: So i have found bboii86's thread on the AT&T S8+ Stock Oreo G955USQU3CRD4 Odin files: https://forum.xda-developers.com/at...g955u-stock-g955usqu3crd4-odin-files-t3789751 and because im already running the same baseband version somehow but with Verizon bloatware im going to try flashing it. I suppose having the AT&T bloatware rather than verizon would just make me feel better lol. So new question with parts of the old still in place: will running PartCyborgRom give me access to all the bands on the AT&T network and will I be able to use it being on the 8.0 (oreo) Android Version? Much appreciated my friends.
https://forum.xda-developers.com/galaxy-s8+/how-to/qualcomm-phones-add-lte-band-using-qxdm-t3785458
i think this is what youre looking for

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