Database Users

urgently need xt1643 modem zip file

accidently cleared my modem while flashing and now baseband and imei are showing unknown.. plz suggest how to restore them as flashing stock rom doesnt help me

Problem solved as I was flashing wrong firmware file which was common to 1641-1643 varient now i found 1643 varient specific firmware file and flashing that restore my baseband and IMEI

shakti30 said:
Problem solved as I was flashing wrong firmware file which was common to 1641-1643 varient now i found 1643 varient specific firmware file and flashing that restore my baseband and IMEI
Click to expand...
Click to collapse
Hi, I am stuck with the same problem, where did you find the 1643 specific firmware to flash.

Garry1313 said:
Hi, I am stuck with the same problem, where did you find the 1643 specific firmware to flash.
Click to expand...
Click to collapse
Go to https://www.androidfilehost.com/?a=show&w=files&flid=72578 and download second one firmware with name amz. IF you are rooted then download the flash fire app from play store and install the above mentioned firmware's modem file through it.. Only flash modem not whole firmware through it.. Thats it

shakti30 said:
Go to https://www.androidfilehost.com/?a=show&w=files&flid=72578 and download second one firmware with name amz. IF you are rooted then download the flash fire app from play store and install the above mentioned firmware's modem file through it.. Only flash modem not whole firmware through it.. Thats it
Click to expand...
Click to collapse
I have lost root post installation of 1041 firmware, can it be flashed completely like that. or can i flash modem through fastboot

Garry1313 said:
I have lost root post installation of 1041 firmware, can it be flashed completely like that. or can i flash modem through fastboot
Click to expand...
Click to collapse
Right now I don't have my laptop.. So I can't confirm.. U may have to flash whole firmware via fastboot

Imei "0"??
Guys my imei is 0 i dont know wht happend my dad was using it. Maybe a ota. Possibly
Now. I got this cell from the USA. My cousin gave it to my dad as a gift. .. so i am not sure if this has the indian Firmaware. I had rooted the phone then i went ahead and installed a custom rom to see if it helps. It did not then i flashed indian stock firmware. Xt1643 . Because that was the only one i could find.. i flashed it and stil my Imei is 0. What should i do please help guys im stuck and furious with my luck. I had a razr i with same problem could not get it resolve want to resolve this one

Baseband unkown can u share the modem file bro
shakti30 said:
accidently cleared my modem while flashing and now baseband and imei are showing unknown.. plz suggest how to restore them as flashing stock rom doesnt help me
Click to expand...
Click to collapse
bro also faced the same problem bro .. can u give idea to fix .. pls share the way to fix bro .. pls help me to save 10 months saveings money thanks in advance bro

Mine happen due to flashing of wrong firmware.. Flashing correct firmware solved my problem.. Try downloading right firmware

i have the same problem.
shakti30 said:
Mine happen due to flashing of wrong firmware.. Flashing correct firmware solved my problem.. Try downloading right firmware
Click to expand...
Click to collapse
i have the same problem... flashing the amz file will work? i have indian variant xt1643

jayeshaupe90 said:
i have the same problem... flashing the amz file will work? i have indian variant xt1643
Click to expand...
Click to collapse
Would not recommend it, since those firmwares appear to be for US, Amazon or G4 Play devices (amz is for Amazon), so you may end up damaging/bricking your device more than it already is.
Besides, the links I've given you in the other post should enable you to pull the modem files from those firmwares and flash them (though I'd recommend doing a full flash).

shakti30 said:
Problem solved as I was flashing wrong firmware file which was common to 1641-1643 varient now i found 1643 varient specific firmware file and flashing that restore my baseband and IMEI
Click to expand...
Click to collapse
where did you find it bro I need it urgently too, to restore my baseband

Yeah bro u completely right. For moto G4 plus coming signed stock rom is for US verion and amazone version. I didnt get the indian varient. So after flashing with stock firmware everything is correct excpect Baseband Version. it is changed from ATHENE_INDIA to ATHENE_LATAM_CUST... Please help me...

Moto g4 plus XT1643 Baseband Issue
jayeshaupe90 said:
i have the same problem... flashing the amz file will work? i have indian variant xt1643
Click to expand...
Click to collapse
Is this worked for you....?????

Abijith Ajayan said:
Is this worked for you....?????
Click to expand...
Click to collapse
Did you try flashing the retail stock ROM from here https://forum.xda-developers.com/moto-g4-plus/how-to/stock-rom-npjs25-93-14-4-march-1-t3608138 ? This NPJS25.93-14-18 firmware file is the latest stock ROM for retail EU/UK, Brazil and Indian devices (I'm not sure what other ROMs you've been flashing, I'm hoping flashing the incorrect ROM still means it's fixable...)
Else, you can try this: https://forum.xda-developers.com/moto-g4-plus/how-to/solve-moto-g4-plus-one-imei-fp-sensor-t3800410

Moto g4 plus XT1643 Baseband Issue
echo92 said:
Did you try flashing the retail stock ROM from here https://forum.xda-developers.com/moto-g4-plus/how-to/stock-rom-npjs25-93-14-4-march-1-t3608138 ? This NPJS25.93-14-18 firmware file is the latest stock ROM for retail EU/UK, Brazil and Indian devices (I'm not sure what other ROMs you've been flashing, I'm hoping flashing the incorrect ROM still means it's fixable...)
Else, you can try this: https://forum.xda-developers.com/moto-g4-plus/how-to/solve-moto-g4-plus-one-imei-fp-sensor-t3800410
Click to expand...
Click to collapse
Ya bro, Itried this one and i download NPJS25.93-14-18 latest version and multiple times i flashed with oem locked and again i tried with bootloader unlock. But failed, I cant retrieve my Baseband version of ATHENE_INDIA.
1. I flash my ROM with TWRP. ( NO Problem )
2. I downgraded to Marshmallow from nougat latest. (Problem Starts No signal)
3. Again i downloaded latest firmwire and flashed multiple times. (Flashing Successfully Done)
4. Everything is okey except Network signal.
5. Issue with Baseband I found.
6. Baseband version is Deafult_fsg
7.Apply adb push modem.img && fsg.img && hw.img
8. Again baseband changed to ATHENE_LATAM_CUST
I tried alot bro. Am fed up with moto. Kindly please help me.....

Abijith Ajayan said:
Ya bro, Itried this one and i download NPJS25.93-14-18 latest version and multiple times i flashed with oem locked and again i tried with bootloader unlock. But failed, I cant retrieve my Baseband version of ATHENE_INDIA.
1. I flash my ROM with TWRP. ( NO Problem )
2. I downgraded to Marshmallow from nougat latest. (Problem Starts No signal)
3. Again i downloaded latest firmwire and flashed multiple times. (Flashing Successfully Done)
4. Everything is okey except Network signal.
5. Issue with Baseband I found.
6. Baseband version is Deafult_fsg
7.Apply adb push modem.img && fsg.img && hw.img
8. Again baseband changed to ATHENE_LATAM_CUST
I tried alot bro. Am fed up with moto. Kindly please help me.....
Click to expand...
Click to collapse
After flashing the modem, fsg and hw images in step 7, did you re-flash the latest stock ROM? From what I understand, you need to flash the stock ROM over the pushed images to try to re-link your modem/IMEI.
This seems to be one of the issues of downgrading, and perhaps why Motorola doesn't support you if you do downgrade...

Moto g4 plus XT1643 Baseband Issue
echo92 said:
After flashing the modem, fsg and hw images in step 7, did you re-flash the latest stock ROM? From what I understand, you need to flash the stock ROM over the pushed images to try to re-link your modem/IMEI.
This seems to be one of the issues of downgrading, and perhaps why Motorola doesn't support you if you do downgrade...
Click to expand...
Click to collapse
Thanks for replying and helping me,
How bro...????
After pushed the modem image, fsg image, I reflashed with stock rom.. Latest for XT1643... But result is negative only. after that baseband is fixed with ATHENE_LATAM_CUST. But i want INDIAN Varient.
Bro any option for changing baseband version...

Abijith Ajayan said:
Thanks for replying and helping me,
How bro...????
After pushed the modem image, fsg image, I reflashed with stock rom.. Latest for XT1643... But result is negative only. after that baseband is fixed with ATHENE_LATAM_CUST. But i want INDIAN Varient.
Bro any option for changing baseband version...
Click to expand...
Click to collapse
What do you mean by 'how bro???' I don't understand what you're asking for in that question.
Hrm, you could have a look at some of the other topics with trying to get the baseband back - maybe you could try to find a India hw, modem and fsg image to try to flash. Here's a topic that's been trying to fix the issue for a while with limited success: https://forum.xda-developers.com/moto-g4-plus/help/moto-g4-pluss-model-changed-to-g4-lost-t3496912
You can also try these images I've pulled from my XT1642 (UK, EMEA baseband), see if they can let you get your India baseband back after a stock ROM flash: https://drive.google.com/open?id=1vQHJB37RV4Iv83jeO5mymw-UNe9KtRNm No guarantees though - seems that the downgrade to Marshmallow corrupted firmware somewhere?
Other than that, I'm not sure of other methods besides getting your motherboard replaced.

Hurray........ Its worked
echo92 said:
What do you mean by 'how bro???' I don't understand what you're asking for in that question.
Hrm, you could have a look at some of the other topics with trying to get the baseband back - maybe you could try to find a India hw, modem and fsg image to try to flash. Here's a topic that's been trying to fix the issue for a while with limited success: https://forum.xda-developers.com/moto-g4-plus/help/moto-g4-pluss-model-changed-to-g4-lost-t3496912
You can also try these images I've pulled from my XT1642 (UK, EMEA baseband), see if they can let you get your India baseband back after a stock ROM flash: https://drive.google.com/open?id=1vQHJB37RV4Iv83jeO5mymw-UNe9KtRNm No guarantees though - seems that the downgrade to Marshmallow corrupted firmware somewhere?
Other than that, I'm not sure of other methods besides getting your motherboard replaced.
Click to expand...
Click to collapse
Thank you So much bro..... Its worked man..... Now my baseband is not India. Its EMEA_CUST. Any way am getting signalnow.. Thank you man.....

Baseband Collection/ Switching Guide

I really think there should be a thread on XDA with tested methods to switch baseband as a lot of people face trouble with GPS etc on custom ROMs. Ideally we should be having a collection of TWRP flashable zips instead of having to install stock firmware via tools like Miflash and then doing everything from the beginning.
This zip from Davideavinavil is TWRP flashable and it works perfectly for me. It doesn't improve things drastically from stock Marshmallow Indian ZUI baseband but would be great for if your GPS is not working or something.

To get the baseband from latest Indian ZUI Nougat Beta follow these instructions from zukfans by Magz Heaven. Tested on my own phone which previously had the above Davideavinavil zip flashed and is now on M8996FAAAANAZM-1.76387.1.92759.1. I wiped everything TWRP then flashed this in fastboot and then went back into recovery and flashed ROM + GApps. If you want to run this in Linux open the bat file as text and use the same fastboot commands with those files in your pwd.

1. Will bootloader be locked again after flashing baseband?
2. Do I have to flash ROM after flashing baseband?
3. Does bluetooth connectivity depend on baseband?
Thx

edimonoarfa said:
1. Will bootloader be locked again after flashing baseband?
2. Do I have to flash ROM after flashing baseband?
3. Does bluetooth connectivity depend on baseband?
Thx
Click to expand...
Click to collapse
I also would like to know this... Also does it matter if my phone was from China rather than India for the baseband? Someone please help with these answers
__ganeshanand said:
To get the baseband from latest Indian ZUI Nougat Beta follow these instructions from zukfans by Magz Heaven. Tested on my own phone which previously had the above Davideavinavil zip flashed and is now on M8996FAAAANAZM-1.76387.1.92759.1. I wiped everything TWRP then flashed this in fastboot and then went back into recovery and flashed ROM + GApps. If you want to run this in Linux open the bat file as text and use the same fastboot commands with those files in your pwd.
Click to expand...
Click to collapse
Any idea man?

1qazwsx4 said:
I also would like to know this... Also does it matter if my phone was from China rather than India for the baseband? Someone please help with these answers
Click to expand...
Click to collapse
1. Yes its possible that your bootloader gets locked after flashing. If you do it wrong and doesnt check it after first reboot you can brick your device.
2. No you dont.
3. Someone said when you only flash the NON-HELOS.bin file you can get problems with bluetooth. If its right I dont know.

Danoz88 said:
1. Yes its possible that your bootloader gets locked after flashing. If you do it wrong and doesnt check it after first reboot you can brick your device.
2. No you dont.
3. Someone said when you only flash the NON-HELOS.bin file you can get problems with bluetooth. If its right I dont know.
Click to expand...
Click to collapse
Thanks for your response. Only reason i asked about bluetooth is because only ONE custom rom works for me bluetooth wise. I'm unable to connect to my cars headunit with any rom except resurrection rom. Would flashing a modem help this? my modem is 9-00026-M8996FAAAANAZM-1.63821.1

1qazwsx4 said:
Thanks for your response. Only reason i asked about bluetooth is because only ONE custom rom works for me bluetooth wise. I'm unable to connect to my cars headunit with any rom except resurrection rom. Would flashing a modem help this? my modem is 9-00026-M8996FAAAANAZM-1.63821.1
Click to expand...
Click to collapse
Flashing custom roms shouldnt change the baseband. Does connecting work on rr with this baseband? Do you have problems with other bluetooth devices except your car?

Danoz88 said:
Flashing custom roms shouldnt change the baseband. Does connecting work on rr with this baseband? Do you have problems with other bluetooth devices except your car?
Click to expand...
Click to collapse
Sorry I probably didn't explain that the best. Flashing ROMs doesn't change my baseband but I'm wondering if changing my baseband will fix my Bluetooth problems. Yes RR works with my current baseband and my Bluetooth works with every device I've tried, on flashing to a different ROM none have worked sadly. I've tried to ask around if other people have issues but they all say their BT is working as it should haha

__ganeshanand said:
I really think there should be a thread on XDA with tested methods to switch baseband as a lot of people face trouble with GPS etc on custom ROMs. Ideally we should be having a collection of TWRP flashable zips instead of having to install stock firmware via tools like Miflash and then doing everything from the beginning.
This zip from Davideavinavil is TWRP flashable and it works perfectly for me. It doesn't improve things drastically from stock Marshmallow Indian ZUI baseband but would be great for if your GPS is not working or something.
Click to expand...
Click to collapse
I flashed this zip onto my z2 plus and the phone has stopped completely. Its not booting nor am i able to go to recovery.
It flashes ZUK message and then goes silent completely.
Have i bricked the phone? Can i recover it?
Thanks

Will this baseband work for the UK? Sorry if this a silly question

ramadurair said:
I flashed this zip onto my z2 plus and the phone has stopped completely. Its not booting nor am i able to go to recovery.
It flashes ZUK message and then goes silent completely.
Have i bricked the phone? Can i recover it?
Thanks
Click to expand...
Click to collapse
same here. damit

Lenovo Z2 Plus/ZUK Z2 Plus Baseband Update Guide(Keeping Bootloader Unlocked)

Q. Whats Baseband?
Baseband in laymans terms refers to the radio drivers or blobs of the device.
Many users have complained of their bootloader getting relocked after updating their baseband through a zip file through TWRP or even through fastboot
This guide is for updating the baseband through fastboot WITHOUT RELOCKING THE BOOTLOADER
Using this Method Wont Touch Your Bootloader Keeping it AS IT IS (In the same state as without flashing this baseband)
Many a times after updating baseband or restoring firmware backup through TWRP we cant hear sound or the reciever cant hear us during calls OR sometimes in your custom ROM or sometimes even in latest ZUI you cant get VOLTE working despite all correct APN settings
If you face this problem then updating your Baseband will Solve the Problem Most Of the Times
DO NOT USE THIS ON MARSHMALLOW STOCK ROM OR MARSHMALLOW BASED CUSTOM ROMS IT WILL CAUSE PROBLEMS
USE THIS ON NOUGAT STOCK ROM OR NOUGAT/OREO BASED CUSTOM ROMS
CAN BE USED WITH LOCKED BOOTLOADER ON STOCK ROMS
If TWRP is installed then take a backup of your efs partitiom
Using This Tool Will update the Baseband to M8996FAAAANAZM-1.76387.1.92759.1 (Latest Nougat Baseband)
1.First download the tool from this link https://drive.google.com/file/d/0B2CgYqnPbCh_Q2N0Vmd1d00ySFk/view
2.Download and unpack archive
3.Load the phone into fastboot mode.
4.Connect to PC.
5.In the folder with the unpacked package: Run cmd and then flash_radios.bat - follow instruction on screen.
6.Reboot.
For Installation without PC flash this zip file by davide which i have edited so that it doesnt lock the bootloader or change the splash image, using custom recovery.
https://drive.google.com/file/d/1mHdf2kc0ARpRO6kxAKiI3dotAVY0TJdM/view?usp=drivesdk
For Signal Fluctuations On Treble Oreo Roms (eg.Jio) Flash the 3.5 Baseband From This Thread
https://forum.xda-developers.com/le...irmwarebaseband-twrp-flashable-t3776254/page1
If Updating Baseband Breaks Your Volte You Need To Restore Your TWRP Efs Partition Backup Taken Earlier Look Into This Guide If Restoring Doesnt Help
https://forum.xda-developers.com/lenovo-zuk-z2/how-to/volte-problems-custom-roms-t3744291
Hit Thanks If You Liked It

Tried this method 3 times on different roms bases on oreo and naugat but same result got updated baseband but lost volte....
If u have any other method then please tell me....
Thanks in advance

Pramodkjan said:
Tried this method 3 times on different roms bases on oreo and naugat but same result got updated baseband but lost volte....
If u have any other method then please tell me....
Thanks in advance
Click to expand...
Click to collapse
I too lost my volte.
After flashing pixel experience 26/11 build i got back my volte, i can call but still can't hear voice aur can't send voice. My mic is working fine.
Possible solution plz.

dashingdave said:
I too lost my volte.
After flashing pixel experience 26/11 build i got back my volte, i can call but still can't hear voice aur can't send voice. My mic is working fine.
Possible solution plz.
Click to expand...
Click to collapse
Pramodkjan said:
Tried this method 3 times on different roms bases on oreo and naugat but same result got updated baseband but lost volte....
If u have any other method then please tell me....
Thanks in advance
Click to expand...
Click to collapse
Did you try clean flashing? Back up data before you do that.

Ritik17 said:
Did you try clean flashing? Back up data before you do that.
Click to expand...
Click to collapse
Updated but after a lot of flashing
1st made a full wipe except internal
2nd flashed baseband and after reboot volte again gone
3rd flashed deodexed stock zui and checked volte
4th flashed AEX 5.0
Oh god.....
Finally i am with updated baseband without losing my data
Thank u

Can I do this without reflash rom (aex 5)? Just reboot phone and that's it?
Dont using volte, no problem if lose it.

IgorIgor84 said:
Can I do this without reflash rom (aex 5)? Just reboot phone and that's it?
Dont using volte, no problem if lose it.
Click to expand...
Click to collapse
If u don't need volte than u can dirty flash baseband on any rom naugat or oreo.
But i think volte is gone because baseband is being flashed with some errors. So it can cause problems like signal fluctuations and wifi instability..

For those who getting volte and calling voice bugs...
Flash deodex zui 2.5 indian ..
How i solve my prob
Basically i try oxygen os marshmallow based rom(which degrade my baseband to a mm one) and then i restore my naugat twrp backup....then the voice bug happen.....
Then i flash the latest indian baseband from zuk fans forum....on my custom naugat rom(viper os)
After flashing voice bugs gone...but my volte stops working....
Then i flash deodex stock zui 2.5 indian and enable volte(volte works at this stage) and then flash my custom naugat again ...and everything is fine
SO THE STEPS ARE
1..Flash baseband ..then check if everything works fine or not(basically check ur volte and voice call)
If not then follow step 2
2..Flash stock zui2.5 indian....after zui flashing check everything will be working great ..(don't forget to enable volte in stock)
3...Now its upon u whether to flah custom or not
..................ENJOY.................
NOTE: MY DATA IS SAFE...BY ABOVE STEPS U WILL NOT LOOSE UR DATA
M giving some reference link down below hope i helped u
Zui( flash indian version for volte)
https://forum.xda-developers.com/le...t/deodexed-z2-plus-nougat-2-5-334-st-t3594483
Indian baseband
https://zukfans.eu/community/thread...nd-collection-versions.4162/page-7#post-44007

Pramodkjan said:
Updated but after a lot of flashing
1st made a full wipe except internal
2nd flashed baseband and after reboot volte again gone
3rd flashed deodexed stock zui and checked volte
4th flashed AEX 5.0
Oh god.....
Finally i am with updated baseband without losing my data
Thank u
Click to expand...
Click to collapse
Which stock 2.5 or 3.1

Pramodkjan said:
Updated but after a lot of flashing
1st made a full wipe except internal
2nd flashed baseband and after reboot volte again gone
3rd flashed deodexed stock zui and checked volte
4th flashed AEX 5.0
Oh god.....
Finally i am with updated baseband without losing my data
Thank u
Click to expand...
Click to collapse
If you already flashed the baseband then you don't need to flash it again, if volte doesn't work for you then you can flash baseband and clear modemst1 and 2 yourself and clean flash rom/gapps/magisk.

dashingdave said:
Which stock 2.5 or 3.1
Click to expand...
Click to collapse
3.1 china

Pramodkjan said:
If u don't need volte than u can dirty flash baseband on any rom naugat or oreo.
But i think volte is gone because baseband is being flashed with some errors. So it can cause problems like signal fluctuations and wifi instability..
Click to expand...
Click to collapse
Thanx, I'll do like you said.
I occasionally loose signal bars, then I can't receive and send calls. It's just for few seconds, but it's still annoying coz I have too much calls with partners on my work.

Works like charm!
I'm running AOSP Extended 5.0 Latest Build by @davidevinavil . I just downloaded, unpacked archive, rebooted phone in fastboot mode, connected to my PC (USB 2.0), and ran .bat file as administrator, disconnected phone and restart. Everything is working. Thank you dev for this guide! :good: PS. Not a Jio user so no idea if VoLTE works. WiFi, 4G, Calls work flawless.
---------- Post added at 03:40 AM ---------- Previous post was at 03:37 AM ----------
ninad7478 said:
I'm running AOSP Extended 5.0 Latest Build by @davidevinavil . I just downloaded, unpacked archive, rebooted phone in fastboot mode, connected to my PC (USB 2.0), and ran .bat file as administrator, disconnected phone and restart. Everything is working. Thank you dev for this guide! :good: PS. Not a Jio user so no idea if VoLTE works. WiFi, 4G, Calls work flawless.
Click to expand...
Click to collapse
UPDATE. I'm using Vodafone (Mumbai Suburbs) and after updating baseband, I'm getting faster webpage loading speeds than before.

This can be flashed on locked bootloader of nougat stock roms?

For Changing Baseband Without PC Flash this zip by davide which I have edited so that it wont relock the bootloader or change the splash image. Baseband version 2.0
https://drive.google.com/file/d/1mHdf2kc0ARpRO6kxAKiI3dotAVY0TJdM/view?usp=drivesdk

calling issues: receiver cant able to hear me properly
First i flashed stock (nougat) ZUI_2.5.104_ST (Indian) volte was working fine calling was perfect on both sims.
Then i flashed aex 4.6 i checked the baseband it was version 1.7 (previously it was 1.6).
Volte is not showing then i have to manually add the apn then volte was there.
But sim1 voice clarity is not perfect receiver cant able to hear me....sim2 working loud & clear
Please suggest to me some method to resolve this

Ritik17 said:
If you already flashed the baseband then you don't need to flash it again, if volte doesn't work for you then you can flash baseband and clear modemst1 and 2 yourself and clean flash rom/gapps/magisk.
Click to expand...
Click to collapse
how to clear modemst 1& 2 ?

vatstarun18 said:
how to clear modemst 1& 2 ?
Click to expand...
Click to collapse
Code:
fastboot erase modemst1
fastboot erase modemst2

Ritik17 said:
Code:
fastboot erase modemst1
fastboot erase modemst2
Click to expand...
Click to collapse
thanks for the reply
Which was the latest baseband according to indian zui....mine is showing in custom rom M8996FAAAANAZM-1.76387.1.92759.1
i flashed the last indian zui version 2.5.104_ST from that i have this baseband...but call quality in sim1 is worse
i am on aex 4.6

vatstarun18 said:
thanks for the reply
Which was the latest baseband according to indian zui....mine is showing in custom rom M8996FAAAANAZM-1.76387.1.92759.1
i flashed the last indian zui version 2.5.104_ST from that i have this baseband...but call quality in sim1 is worse
i am on aex 4.6
Click to expand...
Click to collapse
That is the latest Indian baseband, don't know about quality it's decent for me.

VoLTE Fix For Problems On Custom & Stock Roms [Z2 Plus]

Volte or Voice Over LTE is a feature of LTE(4G) networks which allows the voice and sms to be carried over the mobile network just as data packets unlike older networks which requires a dedicated voice channel.
It needs to be supported by both the carrier and the device to work.
Jio is an Indian Mobile Carrier with solely uses Volte for calling and messaging
In case of our device (Z2Plus) the efs partition contains all details of the modem including the right configuration for using volte and also mac addresses of bluetooth and wifi. Only stock rom has exclusive rights to modify some parts of it.
Custom roms dont tamper with it as it also contains the valuable imei and mac addresses info which needs to be preserved.
If the efs partition is somehow corruped then the phone would be unable to connect to any kind of network
As efs partition contains the volte details and cant be edited by custom roms so it has be carried over from stock rom after volte details are lodged into it. The efs partition if doesnt contain the volte details from stock rom will not give any volte details to the custom rom making volte unable to work on custom roms
So for making volte work you have to first use volte on stock and then move to custom so that the details are carried over
If you have your TWRP efs backup from your phone when volte was working then restoring it might help in regaining the volte functionality on custom roms.
For restoring stock rom of 7.0 nougat follow this guide(recommended) https://forum.xda-developers.com/le...lenovo-zuk-z2-plus-2132-indian-t3678826/page5
If volte doesnt comeback even after installation of qpst stock rom then you need a baseband update on your stock rom, Boot to fastboot mode & then follow this guide. Use the pc tool to flash baseband.
https://forum.xda-developers.com/lenovo-zuk-z2/how-to/lenovo-z2-plus-zuk-z2-plus-baseband-t3713109
Some users claim that flashing a stockrom throught twrp also works but I have not tested it. If you wanna try this simpler method use this guide https://forum.xda-developers.com/le...xed-z2-plus-nougat-2-5-334-st-t3594483/page55
Also remember if you mess up with your efs partition it would not be repaired by just flashing stock rom!
Is you have somehow messed up with your efs partition(eg. Restoring efs from another z2 plus) then here is the guide to repair it https://forum.xda-developers.com/le...de-restore-lost-imeis-repair-network-t3635734 always remember to take backup of efs partition in recovery
For Signal Fluctuations On Treble Oreo Roms (eg.Jio) Flash the 3.5 Baseband From This Thread
https://forum.xda-developers.com/le...irmwarebaseband-twrp-flashable-t3776254/page1
Hit Thanks If You Liked It

AstroBiswas said:
Volte or Voice Over LTE is a feature of LTE(4G) networks which allows the voice and sms to be carried over the mobile network just as data packets unlike older networks which requires a dedicated voice channel.
It needs to be supported by both the carrier and the device to work.
Jio is an Indian Mobile Carrier with solely uses Volte for calling and messaging
In case of our device (Z2Plus) the efs partition contains all details of the modem including using volte and also addresses of bluetooth and wifi. Only stock rom has exclusive rights to modify some parts of it.
Custom roms dont tamper with it as it also contains the valuable imei and mac addresses info which needs to be preserved.
If the efs partition is somehow corruped then the phone would be unable to connect to any kind of network
As efs partition contains the volte details and cant be edited by custom roms so it has be carried over from stock rom after volte details are lodged into it. The efs partition if doesnt contain the volte details from stock rom will not give any volte details to the custom rom making volte unable to work on custom roms
So for making volte work you have to first use volte on stock and then move to custom so that the details are carried over
For restoring stock rom of 7.0 nougat follow this guide(recommended) https://forum.xda-developers.com/le...lenovo-zuk-z2-plus-2132-indian-t3678826/page5
Some users claim that flash a stockrom throught twrp also works but I have not tested it. If you wanna try this simpler method use this guide https://forum.xda-developers.com/le...xed-z2-plus-nougat-2-5-334-st-t3594483/page55
Also remember if you mess up with your efs partition it would not be repaired by just flashing stock rom!
Is you have somehow messed up with your efs partition(eg. Restoring efs from another z2 plus) then here is the guide to repair it https://forum.xda-developers.com/le...de-restore-lost-imeis-repair-network-t3635734 always remember to take backup of efs partition in recovery
Click to expand...
Click to collapse
Can u pls tell me how can I improve my signal receptivity in custom ROMs for z2 plus as it is always low for jio /Lte/volte despite updating my baseband to the latest one.

pkn267 said:
Can u pls tell me how can I improve my signal receptivity in custom ROMs for z2 plus as it is always low for jio /Lte/volte despite updating my baseband to the latest one.
Click to expand...
Click to collapse
The latest zui 3.5 baseband(1.70) might help

pkn267 said:
Can u pls tell me how can I improve my signal receptivity in custom ROMs for z2 plus as it is always low for jio /Lte/volte despite updating my baseband to the latest one.
Click to expand...
Click to collapse
If your phone is rooted, lock band 5 for better coverage for Jio.

AmanTiwari said:
If your phone is rooted, lock band 5 for better coverage for Jio.
Click to expand...
Click to collapse
Well not needed anymore as I have fixed it.Thanks for ur suggestion.

Unable to make Jio to Jio calls
Hi, i am unable to make calls only to Jio numbers. It says "call ended". I'm using AEX Oreo 8.1.
I'm pretty much a noob, so please explain in simpler terms.
Thanks in advance!

[email protected] said:
Hi, i am unable to make calls only to Jio numbers. It says "call ended". I'm using AEX Oreo 8.1.
I'm pretty much a noob, so please explain in simpler terms.
Thanks in advance!
Click to expand...
Click to collapse
You dont have your volte working

[email protected] said:
Hi, i am unable to make calls only to Jio numbers. It says "call ended". I'm using AEX Oreo 8.1.
I'm pretty much a noob, so please explain in simpler terms.
Thanks in advance!
Click to expand...
Click to collapse
Try flashing once the deodexed zui 2.5 rom .This may solve your problem.After that u can remove that ROM and flash rom of your choice.

pkn267 said:
Well not needed anymore as I have fixed it.Thanks for ur suggestion.
Click to expand...
Click to collapse
Can you please tell me how you fixed it???

AmanTiwari said:
Can you please tell me how you fixed it???
Click to expand...
Click to collapse
U r asking the network ??? Ok for this flash the zui2.5 firmware through twrp , it would lock your phone's bootloader ,then unlock your phone bootloader with two commands the 1.the unlock bootloader one and 2.the oem unlock one and then Ur phone will boot to twrp ( Ur data and everything will be safe n Ur ROM will be as it was earlier).Now boot to Ur ROM and then again to down the phone unlocking commands here.
1.fastboot -i 0x2b4c flash unlock unlock_bootloader.img (This the first command)
2.fastboot -i 0x2b4c oem unlock-go (second one)
Pls do find out the Indian firmware on XDA it is easier to find,(2.5 firmware,which is twrp flashable)
Also the reset modem commands.
Thnx.

pkn267 said:
U r asking the network ??? Ok for this flash the zui2.5 firmware through twrp , it would lock your phone's bootloader ,then unlock your phone bootloader with two commands the 1.the unlock bootloader one and 2.the oem unlock one and then Ur phone will boot to twrp ( Ur data and everything will be safe n Ur ROM will be as it was earlier).Now boot to Ur ROM and then again to down the phone unlocking commands here.
1.fastboot -i 0x2b4c flash unlock unlock_bootloader.img (This the first command)
2.fastboot -i 0x2b4c oem unlock-go (second one)
Pls do find out the Indian firmware on XDA it is easier to find,(2.5 firmware,which is twrp flashable)
Also the reset modem commands.
Thnx.
Click to expand...
Click to collapse
I want to know how to fix low signal problem in Jio/4G with custom roms as you said you fixed it.

AmanTiwari said:
I want to know how to fix low signal problem in Jio/4G with custom roms as you said you fixed it.
Click to expand...
Click to collapse
Follow the method I have told u.Their is no shortcut for this. Otherwise u may also flash the stock zui ROM using qfil.Its upto u.

pkn267 said:
Follow the method I have told u.Their is no shortcut for this. Otherwise u may also flash the stock zui ROM using qfil.Its upto u.
Click to expand...
Click to collapse
Ok..I am going to
1. Flash zui 2.5 using qfil
2. Unlock Bootloader & flash twrp
3. Flash AEX 5.6
Will it work??

AmanTiwari said:
Ok..I am going to
1. Flash zui 2.5 using qfil
2. Unlock Bootloader & flash twrp
3. Flash AEX 5.6
Will it work??
Click to expand...
Click to collapse
Qfil is different method and the one that I have told u is different method. Remember her that stock zui2.5 firmware only contain the modem partitions , which means it is not the ROM. It's size is around only 25MB or something like this.

pkn267 said:
Qfil is different method and the one that I have told u is different method. Remember her that stock zui2.5 firmware only contain the modem partitions , which means it is not the ROM. It's size is around only 25MB or something like this.
Click to expand...
Click to collapse
I have ZUI 2.5 qpst that's size is 1.16 GB...

AmanTiwari said:
I have ZUI 2.5 qpst that's size is 1.16 GB...
Click to expand...
Click to collapse
Don't use that method use the zui 2.5 firmware.
Here is the link.
https://www.androidfilehost.com/?fid=673368273298957034

pkn267 said:
Don't use that method use the zui 2.5 firmware.
Here is the link.
https://www.androidfilehost.com/?fid=673368273298957034
Click to expand...
Click to collapse
Ok...I am going to try your method...hope it will fix low network issue bcoz I am getting too low signals on AEX...

AmanTiwari said:
Ok...I am going to try your method...hope it will fix low network issue bcoz I am getting too low signals on AEX...
Click to expand...
Click to collapse
Send me a screenshot of your phone. See this is mine. U can see the network coverage of Jio.

pkn267 said:
Send me a screenshot of your phone. See this is mine. U can see the network coverage of Jio.
Click to expand...
Click to collapse
This is my antutu score btw.

pkn267 said:
This is my antutu score btw.
Click to expand...
Click to collapse
Iam providing u the modem reset command in the pic.

How to flash latest stock ROM on ZB601KL or X00TD

I want to flash latest stock ROM of Zenfone, pls help me out.
Currently I'm on this ROM with TWRP recovery.
https://dl.xda-developers.com/4/9/0/1/0/5/5/Screenshot_20191213-233638.png?key=MR3hSHnUYicRHVIj1ysbsw&ts=1576260722

There are plenty of tutorial threads in this forum section that explain very clearly on how to restore the stock rom. Do a quick research first.

motherninja said:
There are plenty of tutorial threads in this forum section that explain very clearly on how to restore the stock rom. Do a quick research first.
Click to expand...
Click to collapse
I have gone through those tutorials, but I have a bit different problem.
Purchased this phone last year, unlocked BL, & made backup via twrp.
Since then never updated my phone & used various other roms.
Now I want to flash latest stock firmware but facing problem like version mismatch as my previous backup was of stoneage & twrp cannot flash stock firmware.
Asus flash tool is also not helping.

Anubis86 said:
I have gone through those tutorials, but I have a bit different problem.
Purchased this phone last year, unlocked BL, & made backup via twrp.
Since then never updated my phone & used various other roms.
Now I want to flash latest stock firmware but facing problem like version mismatch as my previous backup was of stoneage & twrp cannot flash stock firmware.
Asus flash tool is also not helping.
Click to expand...
Click to collapse
Do not restore your old backup, it won't work. Just forget it. Also, no need to use AFT.
Try this method instead: https://forum.xda-developers.com/as...ow-to/guide-revert-to-stock-rom-lock-t3798420
I use that method for 3 times already and always ended up with success. Just make sure you follow the instructions very carefully. Good luck!