Flash ATT Pixel 4 XL factory image on unlocked P4 XL - Google Pixel 4 XL Questions & Answers

My current carrier is FirstNet (ATT). Im looking into getting a Pixel 4 XL. Ive read other posts where using an unlocked P4 XL with FirstNet/ATT, people have issues with wifi-calling and visual voicemail working. My question is, can I unlocked the bootloader on the unlocked P4 XL and then flash the ATT factory image on it? If the answer is yes, is there any cons against it? Getting updates on ATT is probably slower than unlocked? Thanks.

lokofly said:
My current carrier is FirstNet (ATT). Im looking into getting a Pixel 4 XL. Ive read other posts where using an unlocked P4 XL with FirstNet/ATT, people have issues with wifi-calling and visual voicemail working. My question is, can I unlocked the bootloader on the unlocked P4 XL and then flash the ATT factory image on it? If the answer is yes, is there any cons against it? Getting updates on ATT is probably slower than unlocked? Thanks.
Click to expand...
Click to collapse
I don't think flashing the AT&T image will help because the IMEI of the phone won't be one that is AT&T branded, so you'll still have to call in to AT&T to get the IMEI added to their system as WiFi calling capable.

Related

Verizon SIM, T-Mobile ROM, when should I expect OTA updates?

Sorry, i'm not sure how the OTA's work on the Nexus devices, so I have to ask (and haven't found the right discussions which talk about this)...
I have an ATT branded Nexus 6 which has been bootloader unlocked, OEM partition wiped, and flashed with the "for T-Mobile" LYZ28J image. I am using a Verizon SIM in it.
Since there are posts of T-Mobile pushing LYZ28K I was wondering, will get get this OTA? if so when (i.e. does it it matter than I have a Verizon SIM in there when it comes to OTA's? Or do I manually need to load it?
It doesnt matter that it has a vzw sim in it. If youre stock, you may get it, and you can apply it - but when? Nobody can tell you that, you'll get it when you get it.
If you are waiting for Tmo specific firmware on VZW service, that isn't going to happen - you'll never get that since...well...you dont have TMo service...
Lol what's the reason behind an AT&T branded phone with T-Mobile Rom and Verizon sim? Personally I would just manually do it, like the dude with the hilarious name above me said you may get it you may not. If you want it just go manual.
^^ exactly.
Thats what I've always done - if i want it (and since I'm never stock) I have to manually flash the firmware, make my own no-enforced encryption boot.img (kudos to the kitchen) flash that, and start all over.
Thats how it is, I'm used to it. OTA are too slow, IMO, anyway.
EDIT:
I use this name universally online - any forum you see it, XBL, GitHub, reddit... it's me. lol
The Stig 04 said:
Lol what's the reason behind an AT&T branded phone with T-Mobile Rom and Verizon sim?
Click to expand...
Click to collapse
Long story short... its a work supplied device. I asked for unlocked/unbranded and got the ATT branded (but sim unlocked). My primary work line is Verizon, backup/test line is T-MO.
We have others that will likely be in the same boat (ATT branded, sim unlocked, but using other provider).. who are not techie. So rather than flashing or side loading the OTA (which I easily could), I'm waiting to see what happens.
I'm more curious *IF* I should get the update in this state. and if the mix of rom vs sim might cause any delays/issues.
Bottom Line. Verizon and ATT don't usually OTA for 3 months after update release. Once the factory image for Sprint, USC, International drops you can fastboot flash that They gonna use the same and it will work. T-Mobile and FI work better with their drop just because of WiFi calling.
I'd say that because you're using VZW service, it makes absolutely no difference what branding the phone has and doesn't matter what carrier it was purchased for.
If it uses VZW service, you'll only get OTAs that are for that service. You won't get Tmo specific OTAs for a device being used on VZW - when the OTAs are pushed out they are done so by the service the device is registered as using. I don't think you would ever get said OTAs since the device wouldn't need them.
iRub1Out said:
I'd say that because you're using VZW service, it makes absolutely no difference what branding the phone has and doesn't matter what carrier it was purchased for.
If it uses VZW service, you'll only get OTAs that are for that service. You won't get Tmo specific OTAs for a device being used on VZW - when the OTAs are pushed out they are done so by the service the device is registered as using. I don't think you would ever get said OTAs since the device wouldn't need them.
Click to expand...
Click to collapse
Thank you. And that is what I'm thinking, and why I'm asking... because I'd also seen talk about the SIM in the Nexus 6, or the carrier the phone is on, impacting some of the Nexus 6 updates in the past.
But I also remember my Sister-In-Law using an XT1053 on ATT, who did get XT1053 updates.. SO I wasn't completely sure how the nexus updates worked.
Yes. If leave the sim in will get the Verizon OK'd OTA. That has been up to 3 months after the image was posted. Either remove sim and try to force OTA from Google or manually flash the image. We end up always manually flashing due to having root.. 3-5 minutes tops.
iRub1Out said:
It doesnt matter that it has a vzw sim in it.
Click to expand...
Click to collapse
That's not accurate.. On every other android phone it is accurate but not in the nexus 6.
Usually with a GSM phone, the update is pushed by the oem and your current build determined which update you got.. For example, my Three UK s3 would get the Three UK branded rom update. Even if I had an O2 UK sim in it.. If I then flashed a Vodafone UK rom, I would then get those updates.
With the nexus 6 though, this has changed.. For Verizon and T-mobile users, Google now uses the sim to identify which update to get.. They both were sent with an unbranded stock rom then later on, depending on the simcard, got either a t-mob or vzw update.
The problem is though, that each update will only install on a specified build.. So a vzw update will never install on a t-mob rom or vice versa, so it does matter if the build is one carrier and the sim is another as it will never get an update.
That's what I meant, I probably should have worded that differently.
I meant that even though it is using Verizon service you only get updates for Verizon service. If it's branded for X carrier that won't matter - the service its using is what you'll get updates for.
I apologize about that that was a poor choice of wording on my part.
And just an update.... tonight, I got prompted for a 28meg update. After the update I'm on LYZ28K.
So I guess to answer my own question...
Yes, an ATT Branded Nexus 6 flashed T-Mobile ROM with VZW SIM installed will get updated, and stay on the T-Mobile rom.
That is good.
KidJoe said:
And just an update.... tonight, I got prompted for a 28meg update. After the update I'm on LYZ28K.
So I guess to answer my own question...
Yes, an ATT Branded Nexus 6 flashed T-Mobile ROM with VZW SIM installed will get updated, and stay on the T-Mobile rom.
That is good.
Click to expand...
Click to collapse
Should get the Verizon/ATT (Generic ) rom if have Verizon sim. Hopefully you unlocked before taking update. If locked and it bootloops your only option is RTA.
prdog1 said:
Should get the Verizon/ATT (Generic ) rom if have Verizon sim. Hopefully you unlocked before taking update. If locked and it bootloops your only option is RTA.
Click to expand...
Click to collapse
Yup. I unlocked. Actually when I got it, I unlocked it, rooted, cleared the OEM partition (backed it up first), then flashed the T-Mobile rom.... and left it unlocked (but not rooted since I'm using for work)

At&t Locked Note 8, Can I flash to Verizon?

I picked up a Note 8 thats still locked on At&t and Im planing to flash it over to Verizon for use on their network. The guy that sold it to me said he was working on getting it unlocked and im prayinh he comes through. If I understand what Ive read so far I should be able to flash it over to Verizon while its locked, just that it will still be locked afterwards which is fine. Is that true? Will I encounter any issues or would I be better off waiting until its unlocked first?
And if anyone knows an easy way to unlock it im all ears. Thanks a bunch.
sattech200 said:
I picked up a Note 8 thats still locked on At&t and Im planing to flash it over to Verizon for use on their network. The guy that sold it to me said he was working on getting it unlocked and im prayinh he comes through. If I understand what Ive read so far I should be able to flash it over to Verizon while its locked, just that it will still be locked afterwards which is fine. Is that true? Will I encounter any issues or would I be better off waiting until its unlocked first?
And if anyone knows an easy way to unlock it im all ears. Thanks a bunch.
Click to expand...
Click to collapse
As long as it's carrier locked to AT&T there's nothing you can do.
While you can flash the VZW ROM, your device will still be locked to AT&T. Have to wait for them to unlock it.
cam30era said:
As long as it's carrier locked to AT&T there's nothing you can do.
While you can flash the VZW ROM, your device will still be locked to AT&T. Have to wait for them to unlock it.
Click to expand...
Click to collapse
I understand that, but I was wanting to play and get a jump on the game, if I flash it to VZW will I have any issues unlocking it with ATT after the fact? I'm just wanting to get the VZW firmware loaded and the phone setup so once it's carrier unlocked I'll be ready to go with Verizon.
sattech200 said:
I understand that, but I was wanting to play and get a jump on the game, if I flash it to VZW will I have any issues unlocking it with ATT after the fact? I'm just wanting to get the VZW firmware loaded and the phone setup so once it's carrier unlocked I'll be ready to go with Verizon.
Click to expand...
Click to collapse
I don't know. While it isn't applicable to our device, I do know that if one is running a custom ROM, often the SIM unlock code won't work.
Just in case anyone else has the same question, sense I'm sitting on a samsung locked Note Edge that was legitimently mine I decided to play it safe and wait it out. Original owner got it unlocked for me today so now it's time I can play.

Convert Verizon Note 9 to AT&T Note 9

Is it possible to convert via firmware update a Verizon sim unlocked N960U to fully branded AT&T N960U to get wifi calling and all the other branded features from AT&T? Right now I am using AT&T sim but when my device boots up it shows Verizon and all the Verizon stuff is there. Thoughts.....
playboy71322 said:
Is it possible to convert via firmware update a Verizon sim unlocked N960U to fully branded AT&T N960U to get wifi calling and all the other branded features from AT&T? Right now I am using AT&T sim but when my device boots up it shows Verizon and all the Verizon stuff is there. Thoughts.....
Click to expand...
Click to collapse
I believe it is. It's a couple of threads on XDA talking about changing firmwares.
ahenderson223 said:
I believe it is. It's a couple of threads on XDA talking about changing firmwares.
Click to expand...
Click to collapse
Thanks I figured it out.
Just in case someone stumbles on this thread I will post the solution.
You will need to flash the US Unlocked version of the phone then flash which ever carrier you want.
Just for clarification purposes, are you saying that once you flash the ATT firmware onto a Verizon device that all ATT functions work? Or did you have to also provision the IMEI to achieve this as well.?
Sent from my SM-N960U1 using Tapatalk
playboy71322 said:
Is it possible to convert via firmware update a Verizon sim unlocked N960U to fully branded AT&T N960U to get wifi calling and all the other branded features from AT&T? Right now I am using AT&T sim but when my device boots up it shows Verizon and all the Verizon stuff is there. Thoughts.....[/QUOi think so
Click to expand...
Click to collapse
mazzenn said:
playboy71322 said:
Is it possible to convert via firmware update a Verizon sim unlocked N960U to fully branded AT&T N960U to get wifi calling and all the other branded features from AT&T? Right now I am using AT&T sim but when my device boots up it shows Verizon and all the Verizon stuff is there. Thoughts.....[/QUOi think so
Click to expand...
Click to collapse
sorry for the late reply. But I was able to achieve everything working on my device now. Brief description of what I did to get everything to work:
1. flash unlocked firmware
2. flash att firmware (not unlocked)
3. put sim in another AT&T branded phone
4. Call AT&T have them activate and provision everything on account as normal
5. Put sim in note 9 and activate wifi calling feature
6. DONE you now have a fully fuctional AT&T device, I even got an update from their servers.
I can go into more detail of the steps if needed.
Click to expand...
Click to collapse
AT&T firmware Note 9 N960F/DS Exynos version
​
playboy71322 said:
mazzenn said:
sorry for the late reply. But I was able to achieve everything working on my device now. Brief description of what I did to get everything to work:
1. flash unlocked firmware
2. flash att firmware (not unlocked)
3. put sim in another AT&T branded phone
4. Call AT&T have them activate and provision everything on account as normal
5. Put sim in note 9 and activate wifi calling feature
6. DONE you now have a fully fuctional AT&T device, I even got an update from their servers.
I can go into more detail of the steps if needed.
Click to expand...
Click to collapse
I am looking for the AT&T firmware. I am currently in Kuwait and destroyed my phone. I had to buy an unlocked Note 9 version with the exynos cpu. The problem is I can't WIFI call or use any of the Volte functions my other phone had. Does anyone have the firmware for AT&T? Will that only work with snapdragon? I have already rooted this phone and it is ready to go. I need these functions so I can call back to the States.
Click to expand...
Click to collapse
This may be of help (instructions for all US Carriers apply) :
https://forum.xda-developers.com/galaxy-note-9/how-to/note-9-n960fd-dual-sim-csc-change-oxm-t3841000
Haven’t used it myself, so, if you have any questions, check with the OP & others who've posted in that thread.
Sent from my SM-N960U using XDA Labs
KOLIOSIS said:
I am looking for the AT&T firmware. I am currently in Kuwait and destroyed my phone. I had to buy an unlocked Note 9 version with the exynos cpu. The problem is I can't WIFI call or use any of the Volte functions my other phone had. Does anyone have the firmware for AT&T? Will that only work with snapdragon? I have already rooted this phone and it is ready to go. I need these functions so I can call back to the States.
Click to expand...
Click to collapse
This may be of help (instructions for all US Carriers apply) :
https://forum.xda-developers.com/galaxy-note-9/how-to/note-9-n960fd-dual-sim-csc-change-oxm-t3841000
Haven’t used it myself, so, if you have any questions, check with the OP & others who've posted in that thread.
Sent from my SM-N960U using XDA Labs[/QUOTE]
Thanks for the quick reply. It looks like I need to wait for Detonator to come out with the AT&T zip. It says coming soon so hopefully soon is in the next couple of weeks. That looks like the best route to go. This is the first phone I have ever rooted. I work with networks and sometimes software kicks me in the butt!
Manny10 said:
Thanks for the quick reply. It looks like I need to wait for Detonator to come out with the AT&T zip. It says coming soon so hopefully soon is in the next couple of weeks. That looks like the best route to go. This is the first phone I have ever rooted. I work with networks and sometimes software kicks me in the butt!
Click to expand...
Click to collapse
Since this will be the 1st phone you'll have rooted, be aware that, especially with Samsung devices, there's a couple of trade-offs that aren't reversible:
1) Samsung Pay will never work even if you unroot.
2) Knox features (I believe) are also a casualty.
There's an e-fuse, for lack of a better word, that once tripped on Samsung devices, cannot be reset. That's why even if you restore the phone to its original condition, those things will be permanently gone.
Sent from my SM-N960U using XDA Labs
playboy71322 said:
mazzenn said:
sorry for the late reply. But I was able to achieve everything working on my device now. Brief description of what I did to get everything to work:
1. flash unlocked firmware
2. flash att firmware (not unlocked)
3. put sim in another AT&T branded phone
4. Call AT&T have them activate and provision everything on account as normal
5. Put sim in note 9 and activate wifi calling feature
6. DONE you now have a fully fuctional AT&T device, I even got an update from their servers.
I can go into more detail of the steps if needed.
Click to expand...
Click to collapse
I have unlocked AT&T Note 9 but I want to use it on Verizon. I wonder if apply above steps with Verizon will work?
1. flash unlocked firmware
2. flash Verizon firmware (not unlocked)
3. put sim in another Verizon branded phone
4. Call Verizon have them activate and provision everything on account as normal
5. Put sim in note 9 and activate wifi calling feature
Click to expand...
Click to collapse
KOLIOSIS said:
Since this will be the 1st phone you'll have rooted, be aware that, especially with Samsung devices, there's a couple of trade-offs that aren't reversible:
1) Samsung Pay will never work even if you unroot.
2) Knox features (I believe) are also a casualty.
There's an e-fuse, for lack of a better word, that once tripped on Samsung devices, cannot be reset. That's why even if you restore the phone to its original condition, those things will be permanently gone.
Sent from my SM-N960U using XDA Labs
Click to expand...
Click to collapse
Thanks for the info. I read up on all of that and the trade off is worth it. I just need all the Volte features and hopefully the correct frequencies for the U.S. I had a note 3 forever and it got destroyed. I loved that phone. This Note 9 is awesome but without being able to manipulate the IMS settings it is a PITA. I just want to be able to call home from time to time. Emailing the wife is no fun especially with the tech available today. I will keep an eye out for Detonator to provide the AT&T CSCs and all that fun stuff. Then this phone will officially be outstanding. I do have to admit that the rooting process was fun. I am all about modified anything. Stock sucks. LOL
Hugo_US said:
playboy71322 said:
I have unlocked AT&T Note 9 but I want to use it on Verizon. I wonder if apply above steps with Verizon will work?
1. flash unlocked firmware
2. flash Verizon firmware (not unlocked)
3. put sim in another Verizon branded phone
4. Call Verizon have them activate and provision everything on account as normal
5. Put sim in note 9 and activate wifi calling feature
Click to expand...
Click to collapse
Im not a phone guru like others on here. But from my experience that is all I did. A really important step I didn't mention is leave the cable PLUGGED IN when you flash the unlocked software then the locked software. This caused my device to read the "sim info" and provision its self for ATT and get rid of the verizon stuff and install the ATT stuff. Hope this helps you out.
Click to expand...
Click to collapse
Can someone please post a link to the unlocked firmware for this phone? Im trying to convert a Verizon Note 9 to T-MO
Phonebricker said:
Can someone please post a link to the unlocked firmware for this phone? Im trying to convert a Verizon Note 9 to T-MO
Click to expand...
Click to collapse
Try this after root with TWRP.
http://tekhd.com/detonator/
Manny10 said:
Try this after root with TWRP.
http://tekhd.com/detonator/
Click to expand...
Click to collapse
if he has the verizon note 9 he cant root it or use twrp
Phonebricker said:
Can someone please post a link to the unlocked firmware for this phone? Im trying to convert a Verizon Note 9 to T-MO
Click to expand...
Click to collapse
I flashed the us factory on my note 9 from Verizon. I have LTE voice and wifi calling. Didn't trip Knox. No root required. Any particular reason you want tmobile firmware?
Droidguy816 said:
I flashed the us factory on my note 9 from Verizon. I have LTE voice and wifi calling. Didn't trip Knox. No root required. Any particular reason you want tmobile firmware?
Click to expand...
Click to collapse
Because my carrier is T-Mobile and my Note 9 came from Verizon. Can you provide a link to the factory firmware? Im hoping to flash to factory unbranded, then flash to t-mobile so I can use my video calling.
Thanks for any help
Phonebricker said:
Can someone please post a link to the unlocked firmware for this phone? Im trying to convert a Verizon Note 9 to T-MO
Click to expand...
Click to collapse
Phonebricker said:
Because my carrier is T-Mobile and my Note 9 came from Verizon. Can you provide a link to the factory firmware? Im hoping to flash to factory unbranded, then flash to t-mobile so I can use my video calling.
Thanks for any help
Click to expand...
Click to collapse
I'm also on tmobile. You need to remove your google account from the settings menu to turn off FRP lock in download mode. (You cant flash while its on)
This page helped me. Tks NICEGYPT
Stock US

Note 8 unlocked ??

Greetings,
Just received my new SM-N950U Note 8. Question is the box says it is a AT&T model but the software is T-Mobile. Baseband is N950USQS5CRK1 if it matters. Is that how it is supposed to be? I thought I was getting a factory unlocked Note 8.
Pat
The N950U is indeed the At&T model of the Note 8. However the seller may have unlocked the device so you can use any carriers SIM in it.
Branded and unlocked are two different things. You can buy a branded Note 8 which is unlocked, no issue.
It was advertised as a factory unlocked model. I just thought it would not have T-mobile software. I actually am on T-mobile so it's not a big deal I was just curious.
The unlocked model will install carrier software and splash screen by knowing what sim card you use. If you take it out and put in a different sim, it will magically change.
bobdelt said:
The unlocked model will install carrier software and splash screen by knowing what sim card you use. If you take it out and put in a different sim, it will magically change.
Click to expand...
Click to collapse
You're half right. The carrier models will do that. But if you're running the unlocked U1 firmware, it will not change any boot animation, splash screen, or add carrier apps. It will provision the SIM card for that carrier, but it will remain unbranded with no bloat.
---------- Post added at 09:23 AM ---------- Previous post was at 09:19 AM ----------
patcal said:
It was advertised as a factory unlocked model. I just thought it would not have T-mobile software. I actually am on T-mobile so it's not a big deal I was just curious.
Click to expand...
Click to collapse
You didn't get what you paid for. If it was advertised as "factory unlocked," and you got an ATT model that's false advertising. ATT models are carrier locked from the factory. They can be unlocked after paying them off through ATT.
They could TECHNICALLY get away with selling you a Verizon model and calling it factory unlocked, since they are unlocked from the factory, but that's still deceptive.
If you're happy, then no harm no foul. But if you really want a U1 model, then you'd have an argument for an exchange or refund.
Thanks for all the info. I am happy with the phone. It is performing as expected. I was just surprised to find the T-mobile app & boot animation when I got it. I really like it so far. My next step is do some more reading & see of I could flash a carrier free unlocked firmware. That's for another day though.
Pat
patcal said:
Thanks for all the info. I am happy with the phone. It is performing as expected. I was just surprised to find the T-mobile app & boot animation when I got it. I really like it so far. My next step is do some more reading & see of I could flash a carrier free unlocked firmware. That's for another day though.
Pat
Click to expand...
Click to collapse
You can. There's a guide for doing it. But to put it simply, download the U1 firmware with the SamFirm tool. Then flash it with patched ODIN 3.13.1.

[Sprint] Unlock Bootloader?

I know the Sprint bootloader is locked, but does anyone know if there will be a way to work around this?
I have seen some threads on a trick to unlock the Verizon bootloader even though it also comes locked- would this work for Sprint? Thanks
UPDATE: What is the Pixel version of MSM/ODIN? I know how to get to EDL mode on it, but from there how would you go about flashing a different firmware to potentially get around the bootloader? Anyone know?
Vonsk said:
I know the Sprint bootloader is locked, but does anyone know if there will be a way to work around this?
I have seen some threads on a trick to unlock the Verizon bootloader even though it also comes locked- would this work for Sprint? Thanks
Click to expand...
Click to collapse
Have you got a link for the trick as mine is coming today and it's locked thanks
jaythenut said:
Have you got a link for the trick as mine is coming today and it's locked thanks
Click to expand...
Click to collapse
https://forum.xda-developers.com/pixel-xl/how-to/how-to-unlock-bootloader-verizon-pixel-t3796030
Vonsk said:
https://forum.xda-developers.com/pixel-xl/how-to/how-to-unlock-bootloader-verizon-pixel-t3796030
Click to expand...
Click to collapse
Nice one I'll try that tonight when my phone comes ?
Got my sprint version yesterday through bestbuy, came locked I booted up with no sim or activating the esim and skipped everything and is still grayed out for me even after factory reset and just signing into wifi... sucks.
joeyddr said:
Got my sprint version yesterday through bestbuy, came locked I booted up with no sim or activating the esim and skipped everything and is still grayed out for me even after factory reset and just signing into wifi... sucks.
Click to expand...
Click to collapse
Why didn't you activate the eSIM option? Went smooth and easy for me on my unlocked Google version.
Sent from my Pixel 4 XL using Tapatalk
EeZeEpEe said:
Why didn't you activate the eSIM option? Went smooth and easy for me on my unlocked Google version.
Sent from my Pixel 4 XL using Tapatalk
Click to expand...
Click to collapse
Mine is not the unlocked version and I read a few threads saying it isn't grayed out if you don't activate the sim first, but alas it was still locked.
Anyone know if the sprint version is unlocked for other carriers
Vonsk said:
https://forum.xda-developers.com/pixel-xl/how-to/how-to-unlock-bootloader-verizon-pixel-t3796030
Click to expand...
Click to collapse
Didn't work for me did say success but didn't unlock ?

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