yashsingh1/xdaforums huggingface dataset:
[Sony Xperia 1 Questions & Answers] LoveJellyButter:
Maybe I'll try. But I don't have a spare phone right now. If you don't mind, can you tell me what did you mix inside your custom firmware.

I heard some info (not verified) about different NFC module inside the Japanese variant. And I don't want to sacrifice the NFC function.

So I'll try to make my own mix hoping that It'll allow access to VoLTE setting.
[Sony Xperia 1 Questions & Answers] MohdAdamm:
why when i open just blank?
[Sony Xperia 1 Questions & Answers] kuro_neko12:
I wonder if I flash back to sov40, did the VOLTE and NFC will back? Or can I mixing?
[Sony Xperia 1 Questions & Answers] ruchan:
if you flash back to SOV40, you loose VoLTE, but NFC will work
[Sony Xperia 1 Questions & Answers] kuro_neko12:
Can I mixing with the global ROM?
[Sony Xperia 1 Questions & Answers] ruchan:
you can use global but NFC won't work on global
[Sony Xperia 1 Questions & Answers] ruchan:
Try SOV40 firmware edited with global modem and customization. I tried only android11 global with voLTE
[Sony Xperia 1 Questions & Answers] kuro_neko12:
Can you give me the details which global modem should I copy to the sov40 firmware?
[Sony Xperia 1 Questions & Answers] ruchan:
you can use the customized SEA modem.. there was one person (khalilrehman17) who gave me the info
[Sony Xperia 1 Questions & Answers] kuro_neko12:
Did it work for single SIM Xperia 1?
[Sony Xperia 1 Questions & Answers] ruchan:
yep. but no NFC.. signal is much stronger compared to SOV40 firmware
[Sony Xperia 1 Questions & Answers] yamahaset81:
Tuan boleh ajar saya macamana nak set up VolTE pada Xperia 1
[Sony Xperia 1 Questions & Answers] ruchan:
I think you can try

What's your model?
[Sony Xperia 1 Questions & Answers] yamahaset81:
My Xperia 1 SOV40
[Sony Xperia 1 Questions & Answers] ruchan:
Nice we have the same model. You can flash Softbank firmware, softbank has voLTE (4G Calling) you can use xperifirm to download the firmware and flash via newflasher
[Sony Xperia 1 Questions & Answers] ruchan:
But if you want global firmware for less bloatware, you can use customized SEA
[Sony Xperia 1 Questions & Answers] ruchan:
Or you can try global firmware:

chrome-extension://bigefpfhnfcobdlfbedofhhaibnlghod/mega/secure.html#folder/BE5RCSIa#2i1fa6FO5tlHJpiMTYk7jQ

nfc will be off, but signal is much better

just flash and enjoy
[Sony Xperia 1 Questions & Answers] yamahaset81:
TQ ruchan......
[Sony Xperia 1 Questions & Answers] yamahaset81:
Ruchan.....boleh pm saya mamana cara 👆
[Sony Xperia 1 Questions & Answers] kuro_neko12:
i try mixing SOV40 and customized SEA, welp it turn out the whole system become so unstable even down to the WIFI is unusable
[Sony Xperia 1 Questions & Answers] Shiro39:
wait a minute... does that mean the Xperia 1 does have support for VoLTE, but it's just the firmware that doesn't support it?

I live in Indonesia and I'm using Smartfren, which they no longer have 2G and 3G, only 4G.

I went to their customer support and they said that my Xperia 1 AU (SOV40) doesn't support VoLTE, so I can't make/receive any calls coming to/from my number.

which firmware do I need to flash in order to get the VoLTE working?

I also really wanna flash the Global ROM to get temporary root and install Magisk.

what do I need to do? should I cherry-pick mix 2 firmwares together?

I don't really care about the NFC tho.

as long as only the NFC that gets disabled from flashing Global ROM / other model's official firmware, I'm fine with not having NFC.

(sure, it's nice to have but, I even barely use the NFC on my XZ1)
[Sony Xperia 1 Questions & Answers] ruchan:
You can download the Xperia 1 Global FW I posted and flash to your phone. I am using that and have VoLTE
[Sony Xperia 1 Questions & Answers] Shiro39:
is the latest version available to this day?

and how should I flash it? do I use newflasher?
[Sony Xperia 1 Questions & Answers] ruchan:
That's on Android 11. Just use newflasher
[Sony Xperia 1 Questions & Answers] Shiro39:
uhm... I think I might be blind, I don't see any link from you

I only saw the .zip and .tft files on the first page
[Sony Xperia 1 Questions & Answers] Shiro39:
was this the one you mentioned?

if I flash this, I'll be on Global ROM and I'll have VoLTE support?

just want to confirm it one more time.

my device is the single sim Xperia 1 from AU (SOV40).

will this one work on that device?

could you please recapture the link properly? as I don't use Chrome and don't have the MEGA addon installed on my Firefox...
[Sony Xperia 1 Questions & Answers] ruchan:
That link was from other xda member who edited the file, I just re shared it.

We have the same model and I do have voLTE now here in Philippines.

I haven't tried it on firefox, go ahead and try, you don't have to have a mega account to download
[Sony Xperia 1 Questions & Answers] Shiro39:
do you happen to know which files were modified/added/replaced/removed?

because I'm thinking of mixing it myself by downloading both the Customized UK & Customized JP firmwares
[Sony Xperia 1 Questions & Answers] ruchan:
The modem files and OEM customization as I was told.
[Sony Xperia 1 Questions & Answers] .ingenius:
Here's the link https://mega.nz/folder/BE5RCSIa#2i1fa6FO5tlHJpiMTYk7jQ

I've flashed this, keeping user data. The modem config has change to global which was unknown earlier. VoLTE is enabled by the service provider, but I'm not seeing any difference just yet.
[Sony Xperia 1 Questions & Answers] Shiro39:
so I just have to replace all these files from the Customized_JP into the Customized_UK and flash it with newflasher?
[Sony Xperia 1 Questions & Answers] ruchan:
I think you can omit the oem.map and oem_other.map

use the other files from Customized UK to JP to retain NFC but I think it would not have voLTE.. You may experiment though
[Sony Xperia 1 Questions & Answers] Shiro39:
I already flashed the Customized_UK firmware and yup it doesn't have the VoLTE option.

but at least it now have the option to choose between 2G/3G/4G

can I just flash these oem and modem files, or I need to do a complete flash?
[Sony Xperia 1 Questions & Answers] Shiro39:
I replaced only these files in the Customized_UK with the ones from Customized_SEA and now I have VoLTE!

still setting up the device and gonna see later whether the NFC is working or not.

tho if it's no longer working, I don't really mind at all.
[Sony Xperia 1 Questions & Answers] ruchan:
NFC won't work though.. did you do a complete flash? is your signal now showing LTE+?
[Sony Xperia 1 Questions & Answers] ruchan:
so you did not include the modem files?
[Sony Xperia 1 Questions & Answers] Shiro39:
I think I did a complete flash

not keeping any of my data as I've already moved them all into my sd card

it's just showing LTE, not LTE+

hopefully it'll show up when I'm in a different area

I feel like the network speed is little bit better on the Global firmware

getting somewhere around 40 - 65 Mb/s download and 20 Mb/s upload in my bedroom, which I'm sure it should have bad signal coverage (but I'm at full bar instead. either it's because the Xperia 1 has such a good antennas, or my carrier has good coverage)

no, I did not

I flashed my phone twice.

first, without any files replaced.

second, with only the "oem" files replaced.

got VoLTE working on the 2nd time flashing.

found the method mentioned in in here
[Sony Xperia 1 Questions & Answers] Shiro39:
Comment merged with the one above this.

Don't know how to delete a comment on XDA.
[Sony Xperia 1 Questions & Answers] ruchan:
Thanks for the info. I'll try mix n matching firmware for my Xperia 5.. AU models have low signal reception here in my place. Global works best
[Sony Xperia 1 Questions & Answers] pecola123:
How's the NFC ? Is it working ?

Also i'm curious, does your IMEI registered on Kemenperin's site ?
[Sony Xperia 1 Questions & Answers] Shiro39:
I could toggle it on/off from within the settings app or from the quick lauch tile, but I think it's actually not working as I can't retrieve any information from the NFC Tag embedded into my ID card.

Nope. My IMEI isn't registered on kemenperin's site.

The seller said that they could only make the IMEI work for a year.
[Sony Xperia 1 Questions & Answers] Shiro39:
In case there's someone that might want to flash their Xperia 1 AU/SoftBank into Global but also want to have VoLTE support, you can flash this Customized_UK firmware with Customized_SEA's oem files.

Download: Google Drive (flash it with newflasher)

If you want the complete firmware, download this -> "J8110_Modified UK_SEA_55.2.A.4.332-R4C.zip"

If you only want the oem files, download this -> "SEA VoLTE Patch.zip"

- THIS IS ONLY TESTED ON XPERIA 1 AU (SOV40) WITH INDONESIAN CARRIER!

- THE NFC IS OF COUSE WOULD NO LONGER WORK, BUT YOU'LL GET VoLTE WORKING.

- DO NOT FORGET TO REMOVE ANY .ta FILES BEFORE FLASHIING OR YOU MIGHT RE-LOCK YOUR SIM! (this is purely just my assumption)
[Sony Xperia 1 Questions & Answers] .ingenius:
First I tried the patch, but it didn't make any difference. Next, I downloaded your modified firmware and I lost the ability to even 3G. I'm from Pakistan, I think there are compatibility issues with the network providers here. I talked to the carrier helpline and found they're not provisioning VoLTE for sony's 😐.
[Sony Xperia 1 Questions & Answers] Shiro39:
did you clean flash it?

I wiped my data... maybe that'd help?

my carrier also said they didn't support my SOV40

but I know for sure that the Xperia 1 should work with my carrier

I flashed the J8110 Customized UK and applied the patch beforehand, it worked

VoLTE is working and I have the option to choose between LTE/WCDMA/GSM
[Sony Xperia 1 Questions & Answers] .ingenius:
I kept my user data. I do have the option to choose between LTE/WCDMA/GSM but there no visible option to enable VoLTE when available. In *#*#4636#*#* menu, it says IMS registration failed.
[Sony Xperia 1 Questions & Answers] Shiro39:
hmm... I think that could be because the "patch files" only contains VoLTE profiles for mobile carriers in SEA.

this is what my IMS Status look like.

I live in Indonesia and I'm using Smartfren, which only have 4G.

so if I want to make/receive regular calls, I'd need VoLTE.

after patching the Customized UK firmware with some of the files from Customized SEA firmware, VoLTE is showing up and working fine.
[Sony Xperia 1 Questions & Answers] .ingenius:
So, I downloaded the Customized UK firmware, placed your patch files from SEA firmware, and flashed. This time around I didn't keep the user data. Looks like VoLTE is working, finally. IMS registration is successful and VoLTE provisioning is successful as well.
[Sony Xperia 1 Questions & Answers] Ttd_:
Really, I've just reactivated my account just to say thanks to you for this one. Really help me with this VoLTE problem that I've been having with my J8110. For the past few months, telcos here already shut down 3G and left here only 4G & 5G, so whenever I receive a call... my connection (mostly use Google Maps/Waze will disconnect and the navigation will go wonky) will drop to no data at all. Following your guide really helps a lot. Thanks again man.
[Sony Xperia 1 Questions & Answers] Shiro39:
Glad to be helpful for someone!

Someone flashed my "SEA VoLTE Patch" but it does not seem to work for him.

My theory is that the patch only contain VoLTE profile for carriers here in the South East Asia.

It may or may not work for other carrier outside of SEA, but if it does work for you, good to know!
[Sony Xperia 1 Questions & Answers] Ttd_:
Yes, i think that would be it as I am in Malaysia which is included in SEA also. Your theory I would agree 100% percent. I am currently using the patch and works great. not a single bug in your patched rom encountered so far.
[Sony Xperia 1 Questions & Answers] aliadils3d:
Hello..

Please can you tell me from which firmware did you replace the files for the volte on xperia 1. i would like to try the same on the xperia 5
[Sony Xperia 1 Questions & Answers] Dikshantboora:
Do you have any rom for xz2 ..for volte activation in India ??
[Sony Xperia 1 Questions & Answers] Dikshantboora:
Brother do you have any help for Xperia xz2 ..for volte support ..india
[Sony Xperia 1 Questions & Answers] Ahmad shaffiq:
Tuan bleh bantu sya x macam mne nk buat tu🙏🏻
[Sony Xperia 1 Questions & Answers] Ahmad shaffiq:
Assalamualaikum. Bleh ajar sya x mcm mne nk buat tu🙏🏻
[Sony Xperia 1 Questions & Answers] Roney T:
Hi is this available for sony xperia 1 Au set (SOV40) ? Is it volte available on malaysia? and do you have video tutorial?
[Sony Xperia 1 Questions & Answers] Roney T:
Is it the volte available on malaysia? I have xperia 1 au but only a single sim. I wonder if ur xperia is single sim too then i can try to flash my xperia 1
[Sony Xperia 1 Questions & Answers] CM users:
hi, the google drive link is asking me for authorization, could you fix that please? thx!
[Sony Xperia 1 Questions & Answers] goodhie:
Tried the j8110 global rom VOLTE file and surprisingly it worked. My DITO sim could now make calls to Globe and Smart(Philippine telcos). No HD nor volte icon. Important thing is it works.
[Sony Xperia 1 Questions & Answers] abhishekpujar:
Hey Guys, I got myself a Japanese version of the Xperia 1 in India and having the same issue of not having VoLTE on my carrier (which is Jio, has only 4G coverage and not 3G/2G)

I am able to make calls and have internet on another carrier (Airtel) which has 3G and 4G bands available but I do see that the coverage is pretty bad compared to other phones

I am on Android 10 SoftBank version, I do have experience with flashing custom roms/ flashing OEM roms but never done it on Sony phones

I went through all the posts on this thread and am a little confused on how to get

1. VoLTE working

2. Get to Sony's version of Android 11

3. Better Signal strength

Someone kindly help with a dumbed down version of what I should be doing? what flash tools should I use and how do I replace oem files?

Many thanks
[Sony Xperia 1 Questions & Answers] abhishekpujar:
Hi there, can you please help me with the link to the global Rom and also what tools you used to flash this rom? did you make any changes to the rom before you flashed it?
[Sony Xperia 1 Questions & Answers] Kirigasaki:
hello, i tried to open the link you shared but i cant open it. It keep asking username and password
[Sony Xperia 1 Questions & Answers] abhishekpujar:
Hello all, just bumping this up - would greatly appreciate if any of you guys can help dumb the process so its easy to understand and implement for someone who is new to the Sony ecosystem

Thanks in advance
[Sony Xperia 1 Questions & Answers] melowlis:
I have

Hi. I have SOV40 i want to flash it to global rom but the UBL is no. Can i flash it to global rom? And the sim is lock will it unlock by flashing to global rom?
[Sony Xperia 1 Questions & Answers] Jaisensei:
Hi everyone, for now. What is the best solution/rom that support Volte in Malaysia for Sony Xperia 1. May i have the link to the selected room to download and how to flash it. Your cooperation is needed for now. 😄
[Sony Xperia 1 Questions & Answers] Walkman91:
Im using J9110 with latest 55.2.A.4.332 (sea)

Confirm that Sim Yes 4G/5G and Yoodo sim Volte fully function.

For AU and docomo, recomended download (Sea) firmware or (HK) firmware based on J8110 single sim.

Cross flash method.
[Sony Xperia 1 Questions & Answers] Jaisensei:
May i know where to get the firmware and how to do cross flash method. Any guidance on that part. Really need help on this
[Samsung Galaxy M12] physwizz:
Afaneh TWRP

NOT for baseband u3 or greater

(Working u3/u4 version on post #2)

Download tar file.

Extract recovery.img from tar file

Method 1.

If you have already installed recovery and decrypted.

1. Boot to recovery.

2. Install recovery.img

3. Choose recovery partition

4. Reboot to recovery

Method 2.

From the start

1. Download recovery tar

2. Download vbmeta disabled tar

3. Connect phone to PC

4. Go to Download mode

5. Flash recovery tar into ap with Odin

6. Flash vbmeta disabled tar into userdata with Odin

7. Reboot to recovery.

8. Wipe, format data, type YES.

9. Advanced, terminal.

10.Type multidisabler (twice).

11.Reboot to recovery

12. Backup boot, data, super and dtbo

Method 3 (I used this method)

1. Download firmware

2. Extract ap file.

3. Patch the entire ap file with patched magisk provided

4. Flash ap tar file with Odin

5. Download recovery.img

6. Install TWRP app

7. Install TWRP

8. Choose file to flash.(don't select device)

9. Select recovery.img.

10. Reboot to recovery

11. Wipe, format data, type YES.

12. Advanced, terminal.

13. Type multidisabler (twice).

14.Reboot to recovery

15. Backup boot, data, super and dtbo

@physwizz

New link from afaneh

https://xdaforums.com/t/recovery-unofficial-twrp-for-galaxy-a12s-m12-exynos.4373311/#post-86075593
[Samsung Galaxy M12] physwizz:
Afaneh TWRP modified by physwizz

For baseband u3 & u4

Choose u3 or u4 from below

Download tar file.

Extract recovery.img from tar file

Method 1.

If you have already installed recovery and decrypted.

1. Boot to recovery.

2. Install recovery.img

3. Choose recovery partition

4. Reboot to recovery

Method 2.

1. Download firmware

2. Extract ap file.

3. Patch with magisk

4. Flash with Odin

5. Download recovery.img

6. Install TWRP app

7. Install TWRP

8. Choose file to flash.(don't select device)

9. Select recovery.img.

10. Reboot to recovery.

Go to part B

Method 3.

1. Download recovery tar

2. Download vbmeta disabled tar

3. Connect phone to PC

4. Go to Download mode

5. Flash recovery tar into ap with Odin

6. Flash vbmeta disabled tar into userdata with Odin

Part B

7. Reboot to recovery.

8. Wipe, format data, type YES.

9. Advanced, terminal.

10.Type multidisabler (twice).

11.Reboot to recovery

12. Flash Magisk for root(only for method 3)

13. Backup boot, data, super and dtbo

@physwizz
[Samsung Galaxy M12] mdbshuvo:
Sorry to say, it didn’t work on my M12 (M127GDDU2AUG1). When I flash both of these files (keeping twrp in AP and vbmeta in USERDATA) it fails and boots into download mode.

The error line in download mode says:

Recovery: No footer detected.

Recovery: Error verifying vbmeta image: invalid vbmeta header

something like that.

P.S.: I have rooted my M12 using the modified magisk for A21s.
[Samsung Galaxy M12] physwizz:
I'll give you a different method

1. Download firmware

2. Extract ap file.

3. Patch with magisk

4. Flash with Odin

5. Download recovery.img

6. Install TWRP app

7. Install TWRP

8. Choose file to flash.(don't select device)

9. Select recovery.img.

10. Reboot to recovery.

11. Format data

12. Install multidisabler zip

13. Reboot to recovery

Done
[Samsung Galaxy M12] ジャイッコ:
Hi may i ask will twrp work on version android 10 not 11...
[Samsung Galaxy M12] mdbshuvo:
After step 10, the phone doesn't boot in recovery. Rather it goes into download mode and stays there until I flash the stock rom again. The error message says:

"ODIN MODE (SBV Fail)!

recovery: Error verifying vbmeta image: invalid vbmeta header (6)

CUSTOM RECOVERY

VBMETA M127GDDU2AUH1, 42200704R"
[Samsung Galaxy M12] physwizz:
Did you root using the patched ap?

Try also

https://xdaforums.com/t/recovery-un...a12s-sm-m127x-sm-a127x.4361255/#post-85936799
[Samsung Galaxy M12] mdbshuvo:
Yes I rooted with the patched boot.img.tar, extracted from the AP file, with the modified magisk for A21s.

Pardon me for asking, I am a bit of a noob myself, what is the procedure of flashing the Multi disabler. I mean, do I flash it with Odin? or do I install with TWRP install section. If using Odin, then where to put the zip file (BL, AP, CSC or USERDATA)? If TWRP install section, then which partition (like system, boot, recovery or something else)? Thanks in advance.
[Samsung Galaxy M12] physwizz:
You should have patched the full ap file.

That's why you got the vbmeta error

Method 3

1. Download firmware

2. Extract ap file.

3. Patch with patched magisk

4. Flash with Odin

5. Download recovery.img

6. Install TWRP app

7. Install TWRP

8. Choose file to flash.(don't select device)

9. Select recovery.img.

10. Reboot to recovery

11. Wipe, format data, type YES.

12. Advanced, terminal.

13. Type multidisabler (twice).

14.Reboot to recovery

15. Backup boot, data, super and dtbo
[Samsung Galaxy M12] Lionblack:
Hello does not go into twrp freezes at startup with warning installed afaneh-u3-in3.zip in AP my firmware version

A127FXXU3AUJ5

Solved from start-up method 3 Thank you
[Samsung Galaxy M12] mdbshuvo:
Well this time a new issue appeared. After step 10, the phone tries to boot into recovery. After the boot logo, the screen goes black. First, I thought the phone turned off itself. But pressing the power button doesn't turn it on again. Interestingly, when I connect the phone to PC, the phone seemed to be on. A device named "SM-127F" (though my phone is SM-127G) was found in "This PC". Running:

adb devices

Shows my phone is connected. I think it actually rebooted in recovery, though the screen remains black.

To get to download mode again, I had to press Power button + Volume down keys to shut it down, then pressed both volume keys.
[Samsung Galaxy M12] tonyniu2008:
same here, but i can go adb shell, and twrp command seems working

I can wipe, format, all return ok, but flash GSI lineageOS fails, any ideas?
[Samsung Galaxy M12] tonyniu2008:
btw, my baseband is A127FXXU3AUJ5, tried all twrp releases here, same for all
[Samsung Galaxy M12] physwizz:
Try this one.
[Samsung Galaxy M12] physwizz:
Try this one
[Samsung Galaxy M12] physwizz:
Contact afaneh here.

https://xdaforums.com/t/recovery-unofficial-twrp-for-galaxy-a12s-m12-exynos.4373311/#post-86075593
[Samsung Galaxy M12] mdbshuvo:
The same thing happened as previous, the screen goes black. I can run all sorts of adb commands. Any thoughts?
[Samsung Galaxy M12] physwizz:
M12 needs its own twrp
[Samsung Galaxy M12] tonyniu2008:
same issue, just curiosity, is that just GUI issue or it is not actually working, can i futher the task by command line?
[Samsung Galaxy M12] physwizz:
If you send me your stock recovery.img I could teach myself how to Port it
[Samsung Galaxy M12] mdbshuvo:
Of course. Here is the stock recovery.img for my M12(M127GDDU2AUH1).
[Samsung Galaxy M12] physwizz:
I've found some instructions
[Samsung Galaxy M12] physwizz:
I'm not sure.

It works for some people.

It might be something to do with the country where the phone was made.
[Samsung Galaxy M12] physwizz:
try this Orange Fox recovery.

My first attempt at porting
[Samsung Galaxy M12] mdbshuvo:
Thanks a lot for your effort.

The problem is nearly the same this time. After rebooting to recovery, the boot logo remains on the screen for a long time. First I thought the phone froze. But then I tried adb commands and guess what, those commands work.

In short, the difference is, the screen doesn't go black but the boot logo stays forever. Everything else is pretty much same.
[Samsung Galaxy M12] mdbshuvo:
And for your kind information, the only twrp that could reboot to recovery successfully is this one.

https://xdaforums.com/t/unofficial-...ecovery-project-samsung-m12-sm-m127g.4273327/

The problem with this one is, after wiping all data, the phone fails to reboot at all.
[Samsung Galaxy M12] physwizz:
Thanks.

I need more practice.
[Samsung Galaxy M12] physwizz:
Format
[Samsung Galaxy M12] mdbshuvo:
Well, yes. After I format, it doesn't boot at all. And also, while in recovery, it often reboots without any warning.
[Samsung Galaxy M12] physwizz:
Wipe, format data, type YES.

Flash multidisabler

reboot to recovery directly

flash multidisabler

.Reboot to recovery directly
[Samsung Galaxy M12] mdbshuvo:
By flashing multidisabler, did you mean entering multidisabler in terminal? or install a zip file through TWRP install section?
[Samsung Galaxy M12] mdbshuvo:
After wiping, formatting, tried to enter multidisabler in Terminal. It said:

"Not accessible or not found"

Something like that.
[Samsung Galaxy M12] physwizz:
Use multidisabler.zip
[Samsung Galaxy M12] mdbshuvo:
Where can I find multidisabler.zip for my M12. The aforementioned post doesn’t provide any.