Wifi Calling on a non T-Mobile Nexus 6 - Nexus 6 Q&A, Help & Troubleshooting

I'm very concerned about this.
I just signed up to Tmobile all unlimited plan and I got a Nexus 6 directly from Motorola, not from T-mobile store, so I just inserted the Tmobile nano sim, my phone is totally unlocked.
Before I proceed to any flashing and do it by my own wihthout knowing if it will work, I want to know who has experience or has changed from LMY47Z to LYZ28E build
My phone is a
Nexus 6
Shamu XT1103 32GB P3A0
Lollipop 5.1.1
Stock
Rooted,
Baseband version: MDM9625_104446.01.02.101R
Kernel version 3.10.40-geec2459
Build number: LMY47Z
Custom TWRP
It seems that doesn't have the wifi calling stuff on any of my options, I could not find any about wifi calling options, I read somewhere that I need to install the LYZ28E build to make it work with WIFI Calling.
Can I flash LYZ28E stock version on my current Nexus 6 build: LMY47Z even when I did not buy the nexus 6 from Tmobile?
Shall it work fine with all other carriers as AT&T, Movistar, etc with LYZ28E?
I have read that LMY47Z is sprint build version, but it works great on AT&T, Telcel and Movistar (Mexico), I have not tried on CDMA carriers yet.
I read that whether you change the OS build version comes with different radios, etc and I don't know whether shall affect other carriers as AT&T, Movistar or Telcel if you later on I want to swap nano sims, because that's what I do, I always swap swims when I'm in USA or Mexico.
Using Wugs Fresh tool to proceed to these changes first I need to go back completely to stock rom + unroot and then flash new build that should be LYZ28E, Am I right?
Please advise about steps that I need to do and if it is possible to do on my Nexus 6 build number that I currently have
I appreciate it on advance!!!

rayosx said:
I'm very concerned about this.
I just signed up to Tmobile all unlimited plan and I got a Nexus 6 directly from Motorola, not from T-mobile store, so I just inserted the Tmobile nano sim, my phone is totally unlocked.
Before I proceed to any flashing and do it by my own wihthout knowing if it will work, I want to know who has experience or has changed from LMY47Z to LYZ28E build
My phone is a
Nexus 6
Shamu XT1103 32GB P3A0
Lollipop 5.1.1
Stock
Rooted,
Baseband version: MDM9625_104446.01.02.101R
Kernel version 3.10.40-geec2459
Build number: LMY47Z
Custom TWRP
It seems that doesn't have the wifi calling stuff on any of my options, I could not find any about wifi calling options, I read somewhere that I need to install the LYZ28E build to make it work with WIFI Calling.
Can I flash LYZ28E stock version on my current Nexus 6 build: LMY47Z even when I did not buy the nexus 6 from Tmobile?
Shall it work fine with all other carriers as AT&T, Movistar, etc with LYZ28E?
I have read that LMY47Z is sprint build version, but it works great on AT&T, Telcel and Movistar (Mexico), I have not tried on CDMA carriers yet.
I read that whether you change the OS build version comes with different radios, etc and I don't know whether shall affect other carriers as AT&T, Movistar or Telcel if you later on I want to swap nano sims, because that's what I do, I always swap swims when I'm in USA or Mexico.
Using Wugs Fresh tool to proceed to these changes first I need to go back completely to stock rom + unroot and then flash new build that should be LYZ28E, Am I right?
Please advise about steps that I need to do and if it is possible to do on my Nexus 6 build number that I currently have
I appreciate it on advance!!!
Click to expand...
Click to collapse
Yes, if you want T-Mobile WiFi calling, flash LYZ28E or a custom ROM that supports those features. Yes, you can use any build on any carrier. I'm on Sprint and I have successfully used every build.

Evolution_Tech said:
Yes, if you want T-Mobile WiFi calling, flash LYZ28E or a custom ROM that supports those features. Yes, you can use any build on any carrier. I'm on Sprint and I have successfully used every build.
Click to expand...
Click to collapse
Awesome man!!!! thanks for fast response, take care, I will do it!

it works
Switched a nexus 6, purchased from verizon, running 6.0 (MRA58K), rooted, from verizon to t-mobile today 12-10-15 and the wi-fi calling feature in settings->more appeared. Went into airplane mode turned on Wi-Fi calling and successfully made a call and it sounded good.

Related

[Q] 5.1.1 - is the LMY47Z build for Verizon users?

The nexus image site has two builds listed for 5.1.1:
5.1.1 (For Sprint, USC ONLY) (LMY47Z)
5.1.1 (For T-Mobile ONLY) (LYZ28E)
I'm assuming Verizon users fit under whatever USC is?
Also, I'm coming from build LMY47D - can I flash LMY47Z or do I have to first flash LMY47E, then LMY47I before LMY47Z?
Thanks!
I think it's for TMobile only. It's weird that I just got the update notification on my TMobile N6 though I have an AT&T SIM.
Yeah, I got the OTA alert for 5.1.1 but I'm on Verizon... Only to find there is no Verizon build?
It appears OTA's are going out depending on what build you're currently on. If you're LMY47I or LMY47D you'll get the OTA to LMY47Z. If you're on LMY47M then you'll get LYZ28E.
mordrukk said:
Yeah, I got the OTA alert for 5.1.1 but I'm on Verizon... Only to find there is no Verizon build?
Click to expand...
Click to collapse
What build were you running before you got the OTA to 5.1.1?
oldblue910 said:
What build were you running before you got the OTA to 5.1.1?
Click to expand...
Click to collapse
I was on 5.1 LMY47D. Been rocking 5.1.1 LMY47Z since last week, no issues.
I flashed Z international 5.1.1 on my vzw phone when it came out with the radio bootloader and rom, it works fine. I don't wait for updates that's stupid. We have nexuses. go out there and get it. any rom bootloader or radio works with any nexus device, branding doesn't matter.
mordrukk said:
The nexus image site has two builds listed for 5.1.1:
5.1.1 (For Sprint, USC ONLY) (LMY47Z)
5.1.1 (For T-Mobile ONLY) (LYZ28E)
I'm assuming Verizon users fit under whatever USC is?
Also, I'm coming from build LMY47D - can I flash LMY47Z or do I have to first flash LMY47E, then LMY47I before LMY47Z?
Thanks!
Click to expand...
Click to collapse
The question of LMY47Z being for Verizon depends on how you want to look at it.
Officially, Verizon's current build is 5.1/LMY47E. That is the build that ships on new phones sold by Verizon. Further, the Android 5.1 OTA that was sent to non-VZW Nexus 6s with Verizon SIM cards was 5.0.1/LRX22C -> 5.1/LMY47E. So, unless you've played with manual flashing, or you switched to Verizon after receiving an Android 5.1 OTA on another carrier, your phone should be running LMY47E.
Currently there is no OTA to bring you from LMY47E to any 5.1.1 build and there won't be until Verizon approves it. Once Google gets technical approval from Verizon, the OTA update will be from LMY47E to some other build. That "some other build" might be LMY47Z, or it may be something else entirely. We have no way of knowing right now.
With that said, the fact that you created this thread in the first place means you're most likely willing to tinker with your phone by unlocking your bootloader and flashing factory images. LMY47Z works just fine on Verizon, but there's no way to know for sure if it's going to be the "official" Verizon build or not. Only time will tell. If you're that impatient and a 0.0.1 version number bump means that much to you, then just flash LMY47Z manually and be done with it.
Personally, my Nexus 6 is sitting on LMY47E and I'll just wait it out. I maintain OTA archives so I'm leaving my phone on LMY47E so that I can get the URL to the OTA file whenever it becomes available. There's nothing in 5.1.1 that I can't live without for another month.
oldblue910 said:
The question of LMY47Z being for Verizon depends on how you want to look at it.
Officially, Verizon's current build is 5.1/LMY47E. That is the build that ships on new phones sold by Verizon. Further, the Android 5.1 OTA that was sent to non-VZW Nexus 6s with Verizon SIM cards was 5.0.1/LRX22C -> 5.1/LMY47E. So, unless you've played with manual flashing, or you switched to Verizon after receiving an Android 5.1 OTA on another carrier, your phone should be running LMY47E.
Currently there is no OTA to bring you from LMY47E to any 5.1.1 build and there won't be until Verizon approves it. Once Google gets technical approval from Verizon, the OTA update will be from LMY47E to some other build. That "some other build" might be LMY47Z, or it may be something else entirely. We have no way of knowing right now.
With that said, the fact that you created this thread in the first place means you're most likely willing to tinker with your phone by unlocking your bootloader and flashing factory images. LMY47Z works just fine on Verizon, but there's no way to know for sure if it's going to be the "official" Verizon build or not. Only time will tell. If you're that impatient and a 0.0.1 version number bump means that much to you, then just flash LMY47Z manually and be done with it.
Personally, my Nexus 6 is sitting on LMY47E and I'll just wait it out. I maintain OTA archives so I'm leaving my phone on LMY47E so that I can get the URL to the OTA file whenever it becomes available. There's nothing in 5.1.1 that I can't live without for another month.
Click to expand...
Click to collapse
Ah I probably should have prefaced my post with the following points:
bought the n6 from the play store before verizon was selling it
unlocked the bootloader and rooted it the second after I opened the n6 box
I flash the individual files from the official nexus images, since I can't use OTA updates once unlocked
I received the 5.1.1 OTA notificaiton, which prompted me to look into flashing the new image, only to discover several for different carriers
I hadn't flashed an update since much earlier in the year, and was a bit surprised to see how the images were now broken out by carrier. It seems like it really doesn't matter all that much, but it was somewhat confusing. I wasn't expecting major updates from 5.1.1, but I have noticed improved battery life, even if there are no major functional improvements. I appreciate your detailed analysis though, as you've managed to explain why verizon isn't mentioned with the available images.
mordrukk said:
Ah I probably should have prefaced my post with the following points:
bought the n6 from the play store before verizon was selling it
unlocked the bootloader and rooted it the second after I opened the n6 box
I flash the individual files from the official nexus images, since I can't use OTA updates once unlocked
I received the 5.1.1 OTA notificaiton, which prompted me to look into flashing the new image, only to discover several for different carriers
I hadn't flashed an update since much earlier in the year, and was a bit surprised to see how the images were now broken out by carrier. It seems like it really doesn't matter all that much, but it was somewhat confusing. I wasn't expecting major updates from 5.1.1, but I have noticed improved battery life, even if there are no major functional improvements. I appreciate your detailed analysis though, as you've managed to explain why verizon isn't mentioned with the available images.
Click to expand...
Click to collapse
When you got the 5.1.1 OTA, I'm guessing you weren't on LMY47E, right? You must have been on D, I, or M.
oldblue910 said:
When you got the 5.1.1 OTA, I'm guessing you weren't on LMY47E, right? You must have been on D, I, or M.
Click to expand...
Click to collapse
Yeah, per my original post I got the 5.1.1 OTA from D. I may have been a build or two behind because I haven't received any OTA notification since much earlier in the year.
mordrukk said:
Also, I'm coming from build LMY47D - can I flash LMY47Z or do I have to first flash LMY47E, then LMY47I before LMY47Z?
Click to expand...
Click to collapse
The LMY47D and Z are coupled (EU). To find out
I did not flash a new factory image but waited for the OTA message 5.1.1.
After the update my N6 shows LMY47Z.
I did not expect that because Z is labeled 'For Sprint USC Only'. I am in the Netherlands, provider T-Mobile.
LMY47Z will be just fine for Verizon.
The only concern you might have is the Radios or VoLTE.
1) For radios, just flash a radio http://forum.xda-developers.com/nexus-6/general/ref-nexus-6-modem-collection-t2969380 for verizon 47E (the ... .98R version) you can compare with the one that 47Z had (i belive its ... .95R) and see which gives you the best signal all while on the LMY47Z build.
2) For VoLTE, some say LMY47Z works fine, you'll have to see (just make sure you enabled it on your account too), but 47E was the one built for VoLTE.
Its up to you which you want more, a newer build or certain verizon features. You may get to have both!
I flashed lmy47z on my verizon nexus 6, did a full flash with wipe. Has worked great. Took a few seconds to find the carrier in settings after first boot (showed ! as signal until it did). Once it identified as Verizon i was able to enable volte on the phone. No problems at all since.
Restola said:
I flashed lmy47z on my verizon nexus 6, did a full flash with wipe. Has worked great. Took a few seconds to find the carrier in settings after first boot (showed ! as signal until it did). Once it identified as Verizon i was able to enable volte on the phone. No problems at all since.
Click to expand...
Click to collapse
Can someone else confirm this?
Yes, it works. One interesting note, though. LMY47Z does not download Verizon apps from the Play Store during initial setup like LMY47E does. That alone probably means that LMY47Z won't be the official Verizon build whenever the OTA happens
Sent from my Nexus 6 using Tapatalk
oldblue910 said:
Yes, it works. One interesting note, though. LMY47Z does not download Verizon apps from the Play Store during initial setup like LMY47E does. That alone probably means that LMY47Z won't be the official Verizon build whenever the OTA happens
Sent from my Nexus 6 using Tapatalk
Click to expand...
Click to collapse
Cool Thanks! I finally got a nexus 6 today and ota'ed to LMY47z. I'm bringing it to verizon later for a nanosim. Testing my luck..haha
You won't have a problem. Verizon has all the N6 IMEIs in its database now. It'll show up on your account as "Nexus 6 Non VZW"
Sent from my Galaxy S6 using Tapatalk
oldblue910 said:
You won't have a problem. Verizon has all the N6 IMEIs in its database now. It'll show up on your account as "Nexus 6 Non VZW"
Sent from my Galaxy S6 using Tapatalk
Click to expand...
Click to collapse
Finally verizon did something right for once. Glad to hear.
Just to add my experience to this... when I RMA'd my Nexus 6 from Motorola the new one came with LRX22C. I let it take the OTAs over WiFi before putting my SIM in and it went to LMY47D and then LMY47Z. I then put in my SIM and everything has worked fine.
Also, as noted in another post, on my old Nexus 6 I had flashed LMY47E and the Play Store automatically installed Verizon apps, but LMY47Z didn't do that.

Flashing G920A to G920T

Hi all,
I bought the Galaxy S6 from AT&T when it came out, but switched over to T-Mobile from AT&T last year. Because of this, I have been unable to get any updates and have been stuck on Android 6.0 when the current release is android 7.0, so I've been thinking of flashing my phone. I was curious as to whether I'm able to flash my G920A with Tmobile's G920T rom? Would it work? And if so, after I flash it, would I be able to receive updates normally from T-mobile's servers, as I'm currently using a T-mobile sim, or would I have to flash every subsequent update?
Thanks
Doubtful, since AT&T has a locked bootloader. If the bootloader was unlocked you might be able to try.
hiilikepie said:
Hi all,
I bought the Galaxy S6 from AT&T when it came out, but switched over to T-Mobile from AT&T last year. Because of this, I have been unable to get any updates and have been stuck on Android 6.0 when the current release is android 7.0, so I've been thinking of flashing my phone. I was curious as to whether I'm able to flash my G920A with Tmobile's G920T rom? Would it work? And if so, after I flash it, would I be able to receive updates normally from T-mobile's servers, as I'm currently using a T-mobile sim, or would I have to flash every subsequent update?
Thanks
Click to expand...
Click to collapse
You cannot flash a G920T firmware on a G920A. First off, Odin won't let you because the G920T firmware is only signed to be flashed on the G920T.
And even if you somehow rooted and used FlashFire to force the firmware onto your device, the firmware would brick the device, and without a USB jig or SD card port, the brick would be permanent.
hiilikepie said:
Hi all,
I bought the Galaxy S6 from AT&T when it came out, but switched over to T-Mobile from AT&T last year. Because of this, I have been unable to get any updates and have been stuck on Android 6.0 when the current release is android 7.0, so I've been thinking of flashing my phone. I was curious as to whether I'm able to flash my G920A with Tmobile's G920T rom? Would it work? And if so, after I flash it, would I be able to receive updates normally from T-mobile's servers, as I'm currently using a T-mobile sim, or would I have to flash every subsequent update?
Thanks
Click to expand...
Click to collapse
I too am seeking answers on this as I have an SM-920A I brought over to t-mobile. Unlocked the phone, installed the t-mobile SIM and the phone works fine, except, it still has all the old ATT apps I no longer need or desire to be there AND without the T-Mobile apps installed, I cannot use their LTE Signal Booster. Is there any way I can install these t-mobile apps that would have come with the SM-920T load?
BWMcAMA said:
I too am seeking answers on this as I have an SM-920A I brought over to t-mobile. Unlocked the phone, installed the t-mobile SIM and the phone works fine, except, it still has all the old ATT apps I no longer need or desire to be there AND without the T-Mobile apps installed, I cannot use their LTE Signal Booster. Is there any way I can install these t-mobile apps that would have come with the SM-920T load?
Click to expand...
Click to collapse
https://www.google.com/amp/s/forum....t-samsung-g920a-s6-g925a-s7edge-t3564637/amp/
Just do this and remove the AT&T apps you don't want completely.
Sent from my SM-G955U using Tapatalk
So, what can be done -- if anything--to solve this issue?
-wrong

Note 9 flashing firmware

Im trying to change my sprint note 9 into tmobile carrier to get the most out of my device. Its unlocked using it with tmobile but just wanted to get the full potential. Ive read on the forums ive used odin before but want to know if i have to first flash tmobile or sprint ui then flash tmobile u. I understand i have to used the patched odin. But do i need to flash sprint or tmobile ui or just go straight to tmobile u.
You shouldn't have to install the T-Mobile version of the Note 9's OS just to get the most out of your T-Mobile Plan. As the T-Mobile version of the Note OS just has additional T-Mobile Bloatware. If you are having issue receiving the VoLTE reception on your device then I would suggest you speak with a T-Mobile Representative, who would be able to assist you in getting that feature on your device.
timex300 said:
Im trying to change my sprint note 9 into tmobile carrier to get the most out of my device. Its unlocked using it with tmobile but just wanted to get the full potential. Ive read on the forums ive used odin before but want to know if i have to first flash tmobile or sprint ui then flash tmobile u. I understand i have to used the patched odin. But do i need to flash sprint or tmobile ui or just go straight to tmobile u.
Click to expand...
Click to collapse
I'm guessing you're still on Oreo, otherwise it would've just automatically switched to the T-Mobile firmware.
There's a thread here with the T-Mobile firmware (N960USQU1CSB3). Flash it with patched ODIN.
iceepyon said:
You shouldn't have to install the T-Mobile version of the Note 9's OS just to get the most out of your T-Mobile Plan. As the T-Mobile version of the Note OS just has additional T-Mobile Bloatware. If you are having issue receiving the VoLTE reception on your device then I would suggest you speak with a T-Mobile Representative, who would be able to assist you in getting that feature on your device.
Click to expand...
Click to collapse
Well the thing was it was a sprint note 9 and when i made a call it would switch to 3g. It wasn't tmobile it was just the fact that i needed to flash firmware u to get the tmobile radios. I ended up flashing sm-n960u1 no bloatware and now i get hd calliing, full signal, better downloads and uploads. So far so good only thing i was in android pie so i kinda downgraded to oreo i have a ota update security patch but not sure if it will mess up my phone.
timex300 said:
Well the thing was it was a sprint note 9 and when i made a call it would switch to 3g. It wasn't tmobile it was just the fact that i needed to flash firmware u to get the tmobile radios. I ended up flashing sm-n960u1 no bloatware and now i get hd calliing, full signal, better downloads and uploads. So far so good only thing i was in android pie so i kinda downgraded to oreo i have a ota update security patch but not sure if it will mess up my phone.
Click to expand...
Click to collapse
Glad that it all worked out for you. I am surprised that the unlocked OS worked so well on a Sprint device as in the past Cell Provider Branded devices had hardware restrictions so that they could only be use on their network.
iceepyon said:
Glad that it all worked out for you. I am surprised that the unlocked OS worked so well on a Sprint device as in the past Cell Provider Branded devices had hardware restrictions so that they could only be use on their network.
Click to expand...
Click to collapse
Yeah me too. I was a bit skeptical about it at first so i started doing sum research and found out about flashing firmware. Ended it up buying it and flashed the firmware and so far everything is good. Only thing i downloaded the oreo u1 idk if they have pie. But using sammobile to download firmware was just slow on my wifi.
Mr. Orange 645 said:
I'm guessing you're still on Oreo, otherwise it would've just automatically switched to the T-Mobile firmware.
There's a thread here with the T-Mobile firmware (N960USQU1CSB3). Flash it with patched ODIN.
Click to expand...
Click to collapse
I was actually in android pie with sprint software and it didnt change boot logo. Still showed sprint well eithery way i downgraded to oreo u1 the downloaded tmobile u1 android pie and got everything working better. No more bloatware or boot logo which is fine. Now i get full signal outside, wifi calling, and hd calling works perfect. Better downloads and uploads too on lte.
timex300 said:
I was actually in android pie with sprint software and it didnt change boot logo. Still showed sprint well eithery way i downgraded to oreo u1 the downloaded tmobile u1 android pie and got everything working better. No more bloatware or boot logo which is fine. Now i get full signal outside, wifi calling, and hd calling works perfect. Better downloads and uploads too on lte.
Click to expand...
Click to collapse
That's really weird. Pie has BYOD firmware which automatically does the carrier switching for you. Not sure why it didn't work for you when you put your T-Mo SIM in it.
I had a note 8 from verizon before i got the note 9 and on the 8 it switched from verizon boot to tmobile. Idk maybe just sprint doesnt have that. Another thing when i had the 8 i used it with metropcs even though its under tmobile network no metro boot logo but as soon as i put the tmobile tmobile bloatware downloaded automatically.
Help
timex300 said:
Well the thing was it was a sprint note 9 and when i made a call it would switch to 3g. It wasn't tmobile it was just the fact that i needed to flash firmware u to get the tmobile radios. I ended up flashing sm-n960u1 no bloatware and now i get hd calliing, full signal, better downloads and uploads. So far so good only thing i was in android pie so i kinda downgraded to oreo i have a ota update security patch but not sure if it will mess up my phone.
Click to expand...
Click to collapse
How did you do the flash, I am in the same situation. I need to flash my unlocked Note 9 to ATT firmware so I can use the HD features. Please share me a link to steps.
Craniumbox said:
How did you do the flash, I am in the same situation. I need to flash my unlocked Note 9 to ATT firmware so I can use the HD features. Please share me a link to steps.
Click to expand...
Click to collapse
The thing about at&t is that they have a strict policy about hd calling i believe so the only way to get their hd calling and wifi calling is purchase a at&t note 9. Unless u wanna try flashing it with odin patched i used on mine. Dont have a note anymore but their is allot of post on odin flashing u can look up. Do ur research cant stess that enough

install Verizon "Advanced Calling" on G973U1 firmware?

Verizon is my carrier and I am upgrading to an S10 from an S7. I bought a new S10 loaded with the first Verizon version of Android 10, G973USQS2CSL1. I want to get rid of the bloatware and go back to Android 9. My plan is to flash the U1 firmware, G973U1UES2BSIV, using all 4 of the U1 files. Then flash the Verizon CSC file from this firmware, G973USQS2BSIV, so I can get the "Advanced Calling" for Verizon. I was going to try to do that on my S7 but never got around to it. Here's a thread I created on the S7 forum that said that's what I would need to do to run the unbranded firmware on the S7 but also have Verizon's Advanced Calling (wifi calling, video call, hd calling). https://forum.xda-developers.com/galaxy-s7/help/install-verizon-advanced-calling-g930u-t3997525
I noticed the S10 Verizon firmware now has a 5th file, a USERDATA file. Will I need to also flash that?
I wanted to point out, my new phone is currently locked, but Verizon automatically unlocks it after 60 days. https://www.verizon.com/about/consumer-safety/device-unlocking-policy Will it be a problem if I flash the unbranded firmware on a phone that is still locked? Since Verizon is my carrier, I will obviously be using a Verizon SIM card.
Thank for the help.
You can flash any firmware to your phone as long as it's for the U or U1 models as the "U" means Universal. Bought a phone from AT&T? Flash the Sprint or T-mobile firmware without issues. Same for Verizon and other U.S. carriers firmware.
Flashing the unbranded firmware will get rid of the bloatware, but will also get rid of other features like wifi calling, advanced calling, etc. The user data file is just all of Verizon's bloatware and info crap.
As for going back to Android 9, you can do that as long as you're still on the v2 bootloader. If you've upgraded to the v3 bootloader via OTA, you won't be able to return to Android 9.
StoneyJSG said:
You can flash any firmware to your phone as long as it's for the U or U1 models as the "U" means Universal. Bought a phone from AT&T? Flash the Sprint or T-mobile firmware without issues. Same for Verizon and other U.S. carriers firmware.
Flashing the unbranded firmware will get rid of the bloatware, but will also get rid of other features like wifi calling, advanced calling, etc. The user data file is just all of Verizon's bloatware and info crap.
As for going back to Android 9, you can do that as long as you're still on the v2 bootloader. If you've upgraded to the v3 bootloader via OTA, you won't be able to return to Android 9.
Click to expand...
Click to collapse
I'm on v2 bootloader. Have you heard of flashing the VZW CSC file on top of the U1 unbranded firmware? Apparently people have done it on older devices, like the S7, that only took the 4 files when flashing. I'm trying to run unbranded firmware but still have the Verizon Advanced Calling (wifi calling, HD calling, video call).
Okay if you're on bootloader v2 then you can go back to Android 9. I haven't heard of flashing the carrier CSC file with the unbranded U1 firmware. It might work or might also brick your phone.

Best android 10 stock rom for at&t and lineage?

Hi i was wondering what region/stock Android 10 rom version would be best to flash prior to the lineage or similar ones for use on at&t? The LG v40 i have is v405ua but it doesn't look like there's a official 10 stock rom for it.. i had cross flashed an at&t pie stock rom as it kept dropping calls I assume it was modem firmware. And yes bootloader is unlocked.
Well, a few things... 1st, if you want to use at&t as your carrier, then u have to have an at&t device / rom to be able to use vowifi (and I think volte). So, if you need those, then you have only one option, flash an at&t rom to your at&t device (they can verify if it's at&t by the imei number, so no, you can't take a sprint one and flash at&t rom).
2nd, lineage doesn't support vowifi nor volte. So for us in the states, this is a problem as the 3G netwroks disappear, you'll be unable to make a call without volte.
3rd, any stock 10 would work with (latest) lineage. Lineage doesn't need a 'specific' one to work, it just needs that OS level. There are older lineage builds that work with 9. Maybe check one of those to see if it meets your needs before doing more?
cheers

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