[A2017] After flashing A2017U B29 got dual sim bug - ZTE Axon 7 Questions & Answers

My phone is A2017 and it was flashed A2017U B29. The main sim is for calling/sms and the second one is only for mobile network. Both sim supports 4G LTE and they belong to a different carrier. I noticed following bugs:
If I use 2 sim at a time and access "Dual Sim Settings" All settings is not responding and hang out.
If I put main sim into sim 1 slot and turn on Data for sim 2 the network is only EDGE.
If I put main sim into sim 2 slot and turn on Data for sim 1 the network is 4G LTE.
My question is how to fix bug hanging out All settings.

Sim 2 will not give 4g data. Only sim slot 1. Does everything else work? I may flash my A2017 if everything is working for you. Let me know what you did to flash please. Thanks
Sent from my ZTE A2017 using Tapatalk

alom5 said:
Sim 2 will not give 4g data. Only sim slot 1. Does everything else work? I may flash my A2017 if everything is working for you. Let me know what you did to flash please. Thanks
Sent from my ZTE A2017 using Tapatalk
Click to expand...
Click to collapse
Yes, everything besides Dual sim settings work. I follow this guide: https://forum.xda-developers.com/axon-7/how-to/guide-a2017u-firmware-a2017g-t3495039 with additional steps.
Step 11.5: In TWRP, DO NOT swipe to allow for system modifications unless you are going to root as you will be in a bootloop when you leave twrp.
Step 12: WIPE Cache - Dalvik - DATA - System - Internal SD and format DATA
DO NOT flash the bootstack as it will screw up your device.

Thalias said:
Yes, everything besides Dual sim settings work. I follow this guide: https://forum.xda-developers.com/axon-7/how-to/guide-a2017u-firmware-a2017g-t3495039 with additional steps.
Step 11.5: In TWRP, DO NOT swipe to allow for system modifications unless you are going to root as you will be in a bootloop when you leave twrp.
Step 12: WIPE Cache - Dalvik - DATA - System - Internal SD and format DATA
DO NOT flash the bootstack as it will screw up your device.
Click to expand...
Click to collapse
This is a known issue with mixing bootstacks and systems. There is no known fix at the moment.

A month has passed is there any way to fix this issue?
Thanks

Thalias said:
A month has passed is there any way to fix this issue?
Thanks
Click to expand...
Click to collapse
Have you tried to flash the latest bootstack for your device?
In the tutorial, what it means was don't flashthe U bootstack as that will screw up your device if you don't have a U device
So flash the bootstack for the Chinese version, which is what you got
That should fix the issue,
Someone in the thread of ZIADMAX ROM or whatever it's called said it worked when they flashed their devices bootstack, latest version

shia786 said:
Have you tried to flash the latest bootstack for your device?
In the tutorial, what it means was don't flashthe U bootstack as that will screw up your device if you don't have a U device
So flash the bootstack for the Chinese version, which is what you got
That should fix the issue,
Someone in the thread of ZIADMAX ROM or whatever it's called said it worked when they flashed their devices bootstack, latest version
Click to expand...
Click to collapse
Thank you. Now I need to file the link for latest chinese bootstack. Is there anyone know?

Thalias said:
Thank you. Now I need to file the link for latest chinese bootstack. Is there anyone know?
Click to expand...
Click to collapse
You can get it from the bellow thread
Make sure it's for you Device
NOT your ROM
https://forum.xda-developers.com/ax...de-updates-to-stock-files-via-t3469484/page34
So if your device is G on a U firmware for an example you need to download the G bootstack, the latest one would do best

shia786 said:
You can get it from the bellow thread
Make sure it's for you Device
NOT your ROM
https://forum.xda-developers.com/ax...de-updates-to-stock-files-via-t3469484/page34
So if your device is G on a U firmware for an example you need to download the G bootstack, the latest one would do best
Click to expand...
Click to collapse
My device is A2017 chinese one

Thalias said:
My device is A2017 chinese one
Click to expand...
Click to collapse
Yeah just go to that link and download the Chinese bootstack, but the latest for your device
For an example if the latest is b08 then download b08 bootstack for Chinese
If the latest update is b06 then download b06 bootstack for Chinese device which is a2017. Without the U and G at the end

Thalias said:
My device is A2017 chinese one
Click to expand...
Click to collapse
Did you correct the bug installing chinese bootstack?
Regards
**** Flashing the proper Hw boot stack DOES NOT resolve the dual sim bug, at least, for me.

Related

Still No VoLTE for Redmi2 8gb variant

Hello, I currently am using a jio sim as my primary sim. However, i tried all the methods suggested on xda but still no volte.
List of things that i have tried:-
1. Tried flashing the modem(doesn't work at all)
2. Flashing MIUI 7.5 version as suggested( V7.5.2.0.LHJMIDE_20160629.0000.25_5.1_global ) to be precise
3. Tried flashing another one of Redmi2 Prime's firmware(global developer rom)
4. And tried flashing several other ROMs(Orion OS, RR, Tesla, AOSP and DU) after doing step2 and still no volte support found
Can anybody help me?
@cypherx1998 Flash kitkat dev rom 7.1.5 or newer from fastboot, after it starts booting turn of your device and boot into fastboot, then flash the latest lollipop dev rom and boot into it, setup your device, then go to settings, mobile data (I think, it's where you have the option to change to 3g and 4g data) and enable VoLTE voice calls, after that, reboot into fastboot and flash TWRP 3.0.2-0, then go to wipe, advanced wipe, select:
cache/dalvik-cache
system
data
internal storage
and then wipe, after that go to wipe again, select cache, then "change partition format" select F2FS, and swipe to apply, do the same thing for data, don't do on dalvik-cache and system, or else this may brick your device.
Then flash the wt88047 firmware avaliable on LineageOS second or third post, do a full wipe again, install VoLTE universal Patch Here do a full wipe again, then flash the latest LineageOS build, after wipe only cache and data, flash OpenGapps pico arm android 7.1.1 and reboot.
You will have VoLTE
Try to flash RR 5.8.0 nought ROM. U will have voLTe working on ur device. I am currently using that ROM. Go for it
Shashank Varma said:
Try to flash RR 5.8.0 nought ROM. U will have voLTe working on ur device. I am currently using that ROM. Go for it
Click to expand...
Click to collapse
No... I didn't get VoLTE...
I am using the same ROM.
---------- Post added at 09:27 AM ---------- Previous post was at 09:24 AM ----------
If u want VoLTE u will have to flash the redmi 2 prime rom either fastboot or recovery...
However ur device will start lagging and ur free ram won't go higher than 300 MB.
http://bigota.d.miui.com/6.7.5/wt88....5_20160523.0000.23_5.1_global_53ff97d6ba.tgz
And the recovery one is::
http://bigota.d.miui.com/6.7.5/miui_HM2XWCProGlobal_6.7.5_8673db6ce3_5.1.zip
voLte is working for sim1. See the screenshot below
Volte works just flash latest wxcpro ROM by editing its script so that it won't say 'this ROM is for so and so ****'
Shashank Varma said:
voLte is working for sim1. See the screenshot below
Click to expand...
Click to collapse
How can that screenshot say that VoLTE is working??? I can't see any HD or VoLTE sign..
U can see there enhanced 4g LTE mode which means volte.
Shashank Varma said:
U can see there enhanced 4g LTE mode which means volte.
Click to expand...
Click to collapse
Nope bro!!! I don't think that's VoLTE! Coz I have got that enabled and I can't call using a Jio SIM!!
Didnt work
TecnoTailsPlays said:
@cypherx1998 Flash kitkat dev rom 7.1.5 or newer from fastboot, after it starts booting turn of your device and boot into fastboot, then flash the latest lollipop dev rom and boot into it, setup your device, then go to settings, mobile data (I think, it's where you have the option to change to 3g and 4g data) and enable VoLTE voice calls, after that, reboot into fastboot and flash TWRP 3.0.2-0, then go to wipe, advanced wipe, select:
cache/dalvik-cache
system
data
internal storage
and then wipe, after that go to wipe again, select cache, then "change partition format" select F2FS, and swipe to apply, do the same thing for data, don't do on dalvik-cache and system, or else this may brick your device.
Then flash the wt88047 firmware avaliable on LineageOS second or third post, do a full wipe again, install VoLTE universal Patch Here do a full wipe again, then flash the latest LineageOS build, after wipe only cache and data, flash OpenGapps pico arm android 7.1.1 and reboot.
You will have VoLTE
Click to expand...
Click to collapse
Took me time to try this...but didnt work.....you might think that i didnt follow the steps properly..but i did and i verified on each step that i was doing it the right way....but sadly it didnt work
You may try Redmi 2 Prime ROM (stable or dev) for some days..Check whether you get VoLTE on that ROM or not.. If yes then use that for some days maybe 2 or 3 days..It will be slow at first then after 2 to 3 hours of use u will feel no lag..I was using Developer version for 2-3 months which was fine for daily driver..I just faced storage issue..Then I tried stable version, and the same issue was there.. So I decided to use some custom ROMs and I Flashed AOSP Extended (Nougat)..VoLTE works fine and the ROM is so much smooth with good battery backup..But due to slow internet speed I am using Mokee 7.1 right now.. You can try using R2P ROM for some days...If VoLTE works there then it will work on other ROMs too( as per my experience).
Ignore my english...
Ofnigamer said:
You may try Redmi 2 Prime ROM (stable or dev) for some days..Check whether you get VoLTE on that ROM or not.. If yes then use that for some days maybe 2 or 3 days..It will be slow at first then after 2 to 3 hours of use u will feel no lag..I was using Developer version for 2-3 months which was fine for daily driver..I just faced storage issue..Then I tried stable version, and the same issue was there.. So I decided to use some custom ROMs and I Flashed AOSP Extended (Nougat)..VoLTE works fine and the ROM is so much smooth with good battery backup..But due to slow internet speed I am using Mokee 7.1 right now.. You can try using R2P ROM for some days...If VoLTE works there then it will work on other ROMs too( as per my experience).
Ignore my english...
Click to expand...
Click to collapse
Yes just flash either the dev or stable Redmi 2 Prime ROM. I can say that this works because I have flashed it on as many as three devices. Just go to this link and find out Redmi 2 Prime Global Developer ROM or Global Stable ROM.
http://en.miui.com/a-234.html
Remember these are to be flashed in fastboot. After flashing this, you can flash any Nougat based ROM like LOS, RR, AEX, cRDroid, etc to enjoy VoLTE on those ROMs too.
cypherx1998 said:
Hello, I currently am using a jio sim as my primary sim. However, i tried all the methods suggested on xda but still no volte.
List of things that i have tried:-
1. Tried flashing the modem(doesn't work at all)
2. Flashing MIUI 7.5 version as suggested( V7.5.2.0.LHJMIDE_20160629.0000.25_5.1_global ) to be precise
3. Tried flashing another one of Redmi2 Prime's firmware(global developer rom)
4. And tried flashing several other ROMs(Orion OS, RR, Tesla, AOSP and DU) after doing step2 and still no volte support found
Can anybody help me?
Click to expand...
Click to collapse
1)download Mi flash tool
http://en.miui.com/forum.php?mod=attachment&aid=NzYzMjQzfGFlZDEyMDMzfDE0NzI1NDg5MDJ8ODE5MTF8MzM2MTg0
2)
download fastboot rom redmi 2 prime global stable or china
http://bigota.d.miui.com/V8.1.3.0.L...DI_20161230.0000.00_5.1_global_23ac47dab8.tgz
above is global stable link.
3) put your phone in fastboot mode, unzip the downloaded rom. (avoid spaces in between folder path/name eg "C:\New Folder\Extracted rom\...." is not allowed instead it should be like C:\New_Folder\Extracted_rom\.......)
4) open mi flashing tool see if your device is listed. refresh to see. select clean all (flash_all.bat) option from bottom of mi flashing tool.
5) click on flash, and let it boot.
you would be able to use VoLTE now in miui rom. if you want to change to any N based roms just flash twrp and clean install any rom.
Flashing the MIUI 7.5.2 global ROM should work. Wipe everything and do a clean install. Once you see an indication of VOLTE on the MIUI then you should be able to get the same in other ROMS. I just did it recently.
Flash the redmi 2 prime rom using any of the methods fast boot or normal. If VoLte is what u r looking for
cypherx1998 said:
Hello, I currently am using a jio sim as my primary sim. However, i tried all the methods suggested on xda but still no volte.
List of things that i have tried:-
1. Tried flashing the modem(doesn't work at all)
2. Flashing MIUI 7.5 version as suggested( V7.5.2.0.LHJMIDE_20160629.0000.25_5.1_global ) to be precise
3. Tried flashing another one of Redmi2 Prime's firmware(global developer rom)
4. And tried flashing several other ROMs(Orion OS, RR, Tesla, AOSP and DU) after doing step2 and still no volte support found
Can anybody help me?
Click to expand...
Click to collapse
I think i can help you dude. Flash this fastboot rom you have. Boot it with YOUR Jio sim in the first sim slot inside. Setup everything normally in the phone. After it booted, you WILL see the Volte symbol in the statusbar.
Now root it and install TWRP. Now install a Volte rom of your choice. It has to work.
I will say you why this has to work. I own this device. The 8GB variant. My friend owns the same device. While my device had Volte working, his' didn't work. I checked it. He had kitkat bootloader. Then i flashed the lollipop stock rom in his device in fastboot mode. i directly rooted the device and installed cm14.1 in his device. Still no Volte. I wondered what the fcuk was just happening. My friend was like i'll cope up with this dude. I'll use jio 4g voice. But couldn't leave it like that. I tried it the second time just like i have told you and then VOLTE STARTED ****ING WORKING MAN !!! I was on cloudnine !!! Just helping you out !!
I think the reason Volte was not working is because the jio sim needed the stock rom to trigger it to start Volte sevices. Before it, the jio must have thought "yeah, this is a non volte device ". Just saying !!
Have a nice day !!!
Sankar Bharani said:
I think i can help you dude. Flash this fastboot rom you have. Boot it with YOUR Jio sim in the first sim slot inside. Setup everything normally in the phone. After it booted, you WILL see the Volte symbol in the statusbar.
Now root it and install TWRP. Now install a Volte rom of your choice. It has to work.
I will say you why this has to work. I own this device. The 8GB variant. My friend owns the same device. While my device had Volte working, his' didn't work. I checked it. He had kitkat bootloader. Then i flashed the lollipop stock rom in his device in fastboot mode. i directly rooted the device and installed cm14.1 in his device. Still no Volte. I wondered what the fcuk was just happening. My friend was like i'll cope up with this dude. I'll use jio 4g voice. But couldn't leave it like that. I tried it the second time just like i have told you and then VOLTE STARTED ****ING WORKING MAN !!! I was on cloudnine !!! Just helping you out !!
I think the reason Volte was not working is because the jio sim needed the stock rom to trigger it to start Volte sevices. Before it, the jio must have thought "yeah, this is a non volte device ". Just saying !!
Have a nice day !!!
Click to expand...
Click to collapse
How do you check what bootloader you're on currently?
cypherx1998 said:
How do you check what bootloader you're on currently?
Click to expand...
Click to collapse
I think their is no(simple) way to know that.But you can try a app named "phone info". But it didn't work out for me.It is showing unknown bootloader.
The best way to know your bootloader version is " try to remember which miui ROM u flashed last".
Or there is lolypop firmware in lineage is thread for u.
cypherx1998 said:
How do you check what bootloader you're on currently?
Click to expand...
Click to collapse
Simple. Press vol down and power. will boot into fastboot mode.
If the letters saying FASTBOOT are in green color and small, it is in KitKat bootloader. If the letters saying FASTBOOT are in Blue color and little big, it is Lollipop. I know it sounds a little lame, but trust me, this is a reliable method. If you flashed the lollipop rom via the mi Flash application through system, and youve got the blue colored bootloader, then you are on lollipop bootloader
SankarWayne said:
Simple. Press vol down and power. will boot into fastboot mode.
If the letters saying FASTBOOT are in green color and small, it is in KitKat bootloader. If the letters saying FASTBOOT are in Blue color and little big, it is Lollipop. I know it sounds a little lame, but trust me, this is a reliable method. If you flashed the lollipop rom via the mi Flash application through system, and youve got the blue colored bootloader, then you are on lollipop bootloader
Click to expand...
Click to collapse
well atleast now i know i'm on lollipop bootloader.....but still no volte man

[HELP]SIMs missing (baseband suffix changed to DFLT_FSG) Fingerprint revived

Hi all I have unfortunately lost the proper baseband for my device (XT1643-indian model g4 plus 3gb/32gb)
Prior to posting this, I had my fingerprint lost too. My stupidity was flashing the june fastboot firmware I found on one of the links for motorola rsd cloud clients. :/ With the help of @echo92 i was able to revive the missing fingerprint by pushing hw.img to /dev/block/mmcblk0p43 but still the SIMs won't show up as the baseband has changed to MSM8952_70030.25.03.62.01R DFLT_FSG
I have tried flashing the modem and fsg partitions from the March 1 ROM but still no solution
Any kind of help would be appreciated
Update SIM card recognized but no network at all
tywinlannister7 said:
Update SIM card recognized but no network at all
Click to expand...
Click to collapse
Flashing the modem file for you device didn't change the baseband version? Meaning it didn't remove the suffix at the end...
What happens if you flash a complete stock ROM via fastboot for you device? One that includes all of the files...
Jleeblanch said:
Flashing the modem file for you device didn't change the baseband version? Meaning it didn't remove the suffix at the end...
What happens if you flash a complete stock ROM via fastboot for you device? One that includes all of the files...
Click to expand...
Click to collapse
Bro I already flashed the firmware again..tried the march and june firmwares both
tywinlannister7 said:
Bro I already flashed the firmware again..tried the march and june firmwares both
Click to expand...
Click to collapse
What about this FSG backup (SS, in TWRP) ? Do you have any old backups ?
____Mdd said:
What about this FSG backup (SS, in TWRP) ? Do you have any old backups ?
Click to expand...
Click to collapse
I actually had made these backups specifically for such conditions but i'm unable to find them as of now. I have been able to get the Sims working somehow with @Droidphilev 's flashable modem zip (Available here: https://forum.xda-developers.com/moto-g4-plus/how-to/fxz-flashable-stock-npjs25-93-14-4-t3623010 ). But the baseband I have after flashing this zip is M8952_70030.25.03.62.01p ATHENE_EMEA_DSDS_CUST . Let's see what can be done to revive my phone fully.
tywinlannister7 said:
I actually had made these backups specifically for such conditions but i'm unable to find them as of now. I have been able to get the Sims working somehow with @Droidphilev 's flashable modem zip (Available here: https://forum.xda-developers.com/moto-g4-plus/how-to/fxz-flashable-stock-npjs25-93-14-4-t3623010 ). But the baseband I have after flashing this zip is M8952_70030.25.03.62.01p ATHENE_EMEA_DSDS_CUST . Let's see what can be done to revive my phone fully.
Click to expand...
Click to collapse
your signal is back?
Droidphilev said:
your signal is back?
Click to expand...
Click to collapse
Yes but since the baseband version is different at all, unable to use VoLTE and hence no calls from one of the SIM cards (Jio 4G).
Sent from my Moto G4 Plus using Tapatalk
Please help
tywinlannister7 said:
Yes but since the baseband version is different at all, unable to use VoLTE and hence no calls from one of the SIM cards (Jio 4G).
Sent from my Moto G4 Plus using Tapatalk
Click to expand...
Click to collapse
I FLASHED THE MODEM FILE SPECIFIED ABOVE, BUT STILL BASEBAND SUFFIX IS DFLT_FSG
I'M ON INDIAN XT1643
HELP PLEASE
My problem started as i was using 7.1.2 AOSP custom rom
then i switched back to MM Stock rom
Everything was fine till i received June Nougat Update
during update my phone went blank
Somewhere with the help of XDA i found a blankflash file and got bootloader back
then i flashed TWRP and wiped full system, cache, and everything
then through fastboot i installed nougat xt1643, xt1626-40-41
i tried every possible firmware, every modem file available.
Still my fingerprint and SIMs are not working
my bootloader is B1.06
I cant downgrade bootloader and gpt.bin even with unlocked bootloader, my model is switched to g4 i think
i can only flash bootloader and gpt of june update
rest all firmwares give Security Downgrade error
Help me please!!!
How did you solved the fingerprint problem.
rajatgupta1998 said:
Yes but since the baseband version is different at all, unable to use VoLTE and hence no calls from one of the SIM cards (Jio 4G).
Sent from my Moto G4 Plus using Tapatalk
Click to expand...
Click to collapse
Try this link. I was having same problem. Solved it successfully.
https://forum.xda-developers.com/moto-g4-plus/how-to/solve-moto-g4-plus-one-imei-fp-sensor-t3800410
If u hav Imei num and only required baseband u try this it will work for sure has it corrected mine and others https://forum.xda-developers.com/moto-g4/how-to/baseband-change-t3762270/page2
I cant flash hw.img file
rajatgupta1998 said:
Hi all I have unfortunately lost the proper baseband for my device (XT1643-indian model g4 plus 3gb/32gb)
Prior to posting this, I had my fingerprint lost too. My stupidity was flashing the june fastboot firmware I found on one of the links for motorola rsd cloud clients. :/ With the help of @echo92 i was able to revive the missing fingerprint by pushing hw.img to /dev/block/mmcblk0p43 but still the SIMs won't show up as the baseband has changed to MSM8952_70030.25.03.62.01R DFLT_FSG
I have tried flashing the modem and fsg partitions from the March 1 ROM but still no solution
Any kind of help would be appreciated
Click to expand...
Click to collapse
When I push the hw file.it got struck the boot loader.and the adb command prompt struck on 100%.
rajatgupta1998 said:
I actually had made these backups specifically for such conditions but i'm unable to find them as of now. I have been able to get the Sims working somehow with @Droidphilev 's flashable modem zip (Available here: https://forum.xda-developers.com/moto-g4-plus/how-to/fxz-flashable-stock-npjs25-93-14-4-t3623010 ). But the baseband I have after flashing this zip is M8952_70030.25.03.62.01p ATHENE_EMEA_DSDS_CUST . Let's see what can be done to revive my phone fully.
Click to expand...
Click to collapse
i tried the above mention procedure but it didn't help me and i am also facing the same problem my baseband is changed to european variant 'ATHENE_EMEA_DSDS_CUST" please help me.
rajatgupta1998 said:
Hi all I have unfortunately lost the proper baseband for my device (XT1643-indian model g4 plus 3gb/32gb)
Prior to posting this, I had my fingerprint lost too. My stupidity was flashing the june fastboot firmware I found on one of the links for motorola rsd cloud clients. :/ With the help of @echo92 i was able to revive the missing fingerprint by pushing hw.img to /dev/block/mmcblk0p43 but still the SIMs won't show up as the baseband has changed to MSM8952_70030.25.03.62.01R DFLT_FSG
I have tried flashing the modem and fsg partitions from the March 1 ROM but still no solution
Any kind of help would be appreciated
Click to expand...
Click to collapse
How to revive fingerprint?
Helpme please
Baseband, Dual Sim and FP Issue
BORNIOS said:
How to revive fingerprint?
Helpme please
Click to expand...
Click to collapse
Originally Posted by anon10041998
Steps u should follow :
1. Download stock rom from this link androidfilehost.com/?fid=890278863836286757
2.Flash the stock rom
3. Restart your phone in bootloader and flash TWRP, do not boot system. Restart in TWRP
3. Download these files from drive.google.com/drive/folde...mymw-UNe9KtRNm
4. copy the files to your adb or miniboot folder.
4. Flash using the following commands
adb push modem.img /dev/block/mmcblk0p1
adb push fsg.img /dev/block/mmcblk0p16
adb push hw.img /dev/block/mmcblk0p43
5.Go to ur bootloader again. with fastboot. and flash with that same latest stock rom and check. ur baseband once.
6. I think this baseband will come as EMEA_CUST. But it will get signal network.
7. Now download this zip cloud.mail.ru/public/2Xrm/3vbzbxX5U
8. unzip pws is lenovo-forums.ru
9. Copy all files in ADB folder and delete all previous files
10. Put device into bootloader mode
11. Run programutags --> select APAC --> select INDIA
12. Done
Urgent help
I'm unable to recover sim card and fingerprint (after rooting) option in setting on my Moto g4 plus XT1643 3/32gb Indian version.unrooted successfully currently on stock rom. But no difference. Need help. Please email me on [email protected].
Anand9552 said:
I'm unable to recover sim card and fingerprint (after rooting) option in setting on my Moto g4 plus XT1643 3/32gb Indian version.unrooted successfully currently on stock rom. But no difference. Need help. Please email me on [email protected].
Click to expand...
Click to collapse
do you see any baseband
please share pic

How to go back to stock rom?

How do I go back to stock rom? I'm currently using Rei's LineageOS 14.1 of CodeOfHonor, with Meticulus' TWRP installed.
My original version is VNS-L31C636 Dual Sim. I have tried searching in the forum to no avail. All the instructions I've found are either too unclear or lacks more details. I don't want the risk of bricking my phone right now. I'm familiar with the dload method but I'm not sure enough of what files to flash etc.
I need your help, good sirs. Thank you.
karlorizzi said:
How do I go back to stock rom? I'm currently using Rei's LineageOS 14.1 of CodeOfHonor, with Meticulus' TWRP installed.
My original version is VNS-L31C636 Dual Sim. I have tried searching in the forum to no avail. All the instructions I've found are either too unclear or lacks more details. I don't want the risk of bricking my phone right now. I'm familiar with the dload method but I'm not sure enough of what files to flash etc.
I need your help, good sirs. Thank you.
Click to expand...
Click to collapse
Flash oeminfo L31C636 (install it from TWRP)
https://mega.nz/#!ZgFniLrC!S7eMwyApeaMLacEg2p_SIKxq5LuJQt6M5yQNm3kOMHE
Reboot to recovery and flash FullOTA-MF firmware Android 6 for your phone via dload. GL!
P.S.: in TWRP go to wipe - advanced , and check data format , it must be ext4, if you have f2fs, change it to ext4.
bozka1 said:
Flash oeminfo L31C636 (install it from TWRP)
https://mega.nz/#!ZgFniLrC!S7eMwyApeaMLacEg2p_SIKxq5LuJQt6M5yQNm3kOMHE
Reboot to recovery and flash FullOTA-MF firmware Android 6 for your phone via dload. GL!
P.S.: in TWRP go to wipe - advanced , and check data format , it must be ext4, if you have f2fs, change it to ext4.
Click to expand...
Click to collapse
So I need to go back to marshmallow then update back to nougat? Also where can I find links for firmware downloads?
Thank you for your help.
karlorizzi said:
So I need to go back to marshmallow then update back to nougat? Also where can I find links for firmware downloads?
Thank you for your help.
Click to expand...
Click to collapse
Firmware Finder
Is there any other way for going back to stock? I have a limited data plan and it would cost me so much data for downloading Marshmallow firmware and then OTA updating to Nougat.

How to flash 930U firmware to 930P with BL5/BL6

UPDATE:
Samsung is testing a new firmware for the unlocked S7 and will be a bootloader version 8
<latest>G930UUEU8CRJ2.DM/G930UOYM8CRJ2/G930UUEU8CRJ2</latest> Verizon
How to do this :
Step 1 : You need root your phone. Check the post HERE This works for Oreo And Nougat Roms
Step 2 : Use FlashFire to install custom binary from 930U firmware (tar have Recovery -Boot -System-Cached img). DOWNLOAD HERE (Extract tar file)
- Click the Red + button and choose 'Flash Firmware Package' and choose 'G930UUES4CRG3.tar' select all partitions
- Click on EverRoot, and disable/uncheck inject supersu option
- Click the Red + and choose 'Wipe' (Wipe data/Factory reset all your app)
- Ensure System data, 3rd party apps and Dalvik cache are CHECKED
- Ensure Mount /system read/write is CHECKED AND "Process Cache" DISABLED (cause bootloop after flash with flashfire)
- Press the big FLASH button.
After the flash it complete, you will have 930U Firmware run on 930P Bootloader v5/v6 with no root.
Enjoy pure Stock 930U Rom ​
On attached My phone run CRG3 latest U rom on 930P Bootloader. Rooted with custom kernel
When you give us the files and instruction how to flash?
tahasmarty said:
When you give us the files and instruction how to flash?
Click to expand...
Click to collapse
There was a thread posted a few weeks ago with the info. Results have been mixed in terms of network connection. The main thread linked to a site called gsmzambia . Will probably work unless you are on Sprint, but you will have a few errors and bugs.
Hopefully, he found something new out.
tahasmarty said:
When you give us the files and instruction how to flash?
Click to expand...
Click to collapse
File is now uploading .....
@lvpre
Bugs free :good:
binh24 said:
File is now uploading .....
@lvpre
Bugs free :good:
Click to expand...
Click to collapse
Will this also give you the weird submenus under settings: T Roaming; GiGa LTE? Under the GSMZambia version, I never could get service. Have you tried this with Sprint or another carrier?
lvpre said:
Will this also give you the weird submenus under settings: T Roaming; GiGa LTE? Under the GSMZambia version, I never could get service. Have you tried this with Sprint or another carrier?
Click to expand...
Click to collapse
Weird submenus show when rom has no CSC.
Try to flash my file !
binh24 said:
Weird submenus show when rom has no CSC.
Try to flash my file !
Click to expand...
Click to collapse
Did you take all the parts from the CRG3 firmware? cache.img is from CSC, correct? Do you basically take the stock firmware for the XAA variant?
Also, did you have to convert the files from img.ext4 to img files? What did you use for this? I've used sgs4toext4 to convert those files to a quasi img file to open in LinuxReader, but you are unable to edit them. When I downloaded the Oreo firmware the file structure was ext4. I can open normal img files in 7zip, but not img.ext4 files.
Thanks.
lvpre said:
Did you take all the parts from the CRG3 firmware? cache.img is from CSC, correct? Do you basically take the stock firmware for the XAA variant?
Also, did you have to convert the files from img.ext4 to img files? What did you use for this? I've used sgs4toext4 to convert those files to a quasi img file to open in LinuxReader, but you are unable to edit them. When I downloaded the Oreo firmware the file structure was ext4. I can open normal img files in 7zip, but not img.ext4 files.
Thanks.
Click to expand...
Click to collapse
Cache from CSC. All img.lz need to convert back to img for FlashFire can flash
binh24 said:
Cache from CSC. All img.lz need to convert back to img for FlashFire can flash
Click to expand...
Click to collapse
Cool. What/How did you use to convert the img file? Or do you have a link?
binh24 said:
File is now uploading .....
@lvpre
Bugs free :good:
Click to expand...
Click to collapse
After updating my phone is on bootloop and not even goto recovery i have done all the steps correctly root successfully then install U firmware successfully after that phone is on bootloop then i tired rooting again and flash the root boot file from here S7_Oreo_Su_Binary_Only_ADB_Root.zip then phone is boot normally but when it comes to setup screen phone reboots automatically what can i do now?
Can anyone confirm if SafetyNet passes with this method? I have a spare S7 on Sprint nougat v5 that I use for Pokemon Go and require SafetyNet to pass.
Sprint BLv5
Has anyone with BLv5 actually gotten this method to work?
I have tried this several times now. Followed GSMZambia directions making my own tar to flash and followed this thread. Both resulted in phone getting stuck in a boot loop, flashing the custom firmware lock screen then restarting.
driverdis said:
Can anyone confirm if SafetyNet passes with this method? I have a spare S7 on Sprint nougat v5 that I use for Pokemon Go and require SafetyNet to pass.
Click to expand...
Click to collapse
I am also interested about knox in this case.
You cannot update to Oreo if you are on BLv55. Installing Nougat this way worked while being on BLv5, however, this does NOT seem to work with Sprint even if you flash the cache.img file from the csc file.
It gets stuck on AutoPreconfig and makes you reboot as soon as you put the sim card in and then gives an error when on the sim card blue screen so it is never able to set up the services.
I tried disabling AutoPreconfig through adb and that does remove the popup message and allows me to search for networks under the network operator settings and Sprint does come up but it is never able to connect to the network.
Agree with all the above comments this method is not working properly... i am again on stock sprint v7 bootloader firmware
tahasmarty said:
Agree with all the above comments this method is not working properly... i am again on stock sprint v7 bootloader firmware
Click to expand...
Click to collapse
Aggiedude said:
You cannot update to Oreo if you are on BLv55. Installing Nougat this way worked while being on BLv5, however, this does NOT seem to work with Sprint even if you flash the cache.img file from the csc file.
It gets stuck on AutoPreconfig and makes you reboot as soon as you put the sim card in and then gives an error when on the sim card blue screen so it is never able to set up the services.
I tried disabling AutoPreconfig through adb and that does remove the popup message and allows me to search for networks under the network operator settings and Sprint does come up but it is never able to connect to the network.
Click to expand...
Click to collapse
This method probably works great if you have anything other than Sprint or Sprint MVNO, but something is conflicting like it does during a typical root of the G930P. Someone suggested to see if the phone was reporting an IMEI number. Since Sprint still uses CDMA, it doesn't really depend on the SIM for service. Maybe one idea is to flash an edited build prop in flashfire at the end of the 'install' when some changes like the old root method required. But then it may mess if/when you pop in another SIM card
I tried the method several times. But everytime flashfire finishes installing the rom, the phone reboots in a bootloop. I can't even get on recovery mode, only download mode. Why does it happen? I have a spint S7 G930P on Android Oreo 8.0, Rev0. 6 and baseband version G930PVPU6CRE7. Can anybody help me?
pikolush said:
I tried the method several times. But everytime flashfire finishes installing the rom, the phone reboots in a bootloop. I can't even get on recovery mode, only download mode. Why does it happen? I have a spint S7 G930P on Android Oreo 8.0, Rev0. 6 and baseband version G930PVPU6CRE7. Can anybody help me?
Click to expand...
Click to collapse
Yeah, this method has some issues and bugs. I did the nougat version of this. Android worked great, but it wouldn't connect to the Sprint network. What type of bootloop are you receiving? Some people have complained of a sim card provision one using Sprint
lvpre said:
Yeah, this method has some issues and bugs. I did the nougat version of this. Android worked great, but it wouldn't connect to the Sprint network. What type of bootloop are you receiving? Some people have complained of a sim card provision one using Sprint
Click to expand...
Click to collapse
Just after i flash the zip file with G930U firmware with flashfire, i have bootloops. I can't even get on recovery mode. Only download mode. I am overseas and i don't use sprint sim card on the phone.
I have a G930P with Binary 6, went to the entire process and succeeded to flash BL 4 Firmware U, even the Model of the phone changed to G930U in the settings menu but it didn't recognize my sim card, it said "No Sim Card" :v I tried killing Knox and sprint daemons with ADB shell but no success to get my sim cards to work, I'm outside US without access to a sprint sim card :/ ##3424# ##3666633# and *#0808# already tried once in U Firmware failing again... Is any one running smoth on this method on AT&T or Verizon?

IMEI problem on october patch oreo rom (stock moto)

Hey guys, I tried flashing the stock moto oreo rom (october patch) through 1. flashing via fastboot and 2. twrp flashable rom.
Both methods worked but I lost my IMEI, regardless of which method I flashed the rom with.
I had made two EFS & Persist backups (one from resurrection remix rom and one from a twrp nougat june patch rom) and tried to restore them after flashing the moto oreo rom, but no success.
Can anyone help me with this? I really want to use the stock oreo rom!
Please help guys!
What version of twrp?
twrp which error during restore?
Ever flashed someone else's persist file when you were on stock?
I too am in the same boat, I upgraded to 8with the smart assist no isshes. and when trying to restore my efs and persits (backed up from android 7) with twrp it just doesnt work, hope someone has a fix
twrp-3.2.3-1-potter
for me
my imei also shows up in my settings but doenst work
vonwap said:
I too am in the same boat, I upgraded to 8with the smart assist no isshes. and when trying to restore my efs and persits (backed up from android 7) with twrp it just doesnt work, hope someone has a fix
twrp-3.2.3-1-potter
for me
my imei also shows up in my settings but doenst work
Click to expand...
Click to collapse
Refer to this post - https://forum.xda-developers.com/showpost.php?p=77359949&postcount=2
And the FAQ "On soak test 2 or later, I have my IMEI but no signal. What can I do?"
NZedPred said:
Refer to this post - https://forum.xda-developers.com/showpost.php?p=77359949&postcount=2
And the FAQ "On soak test 2 or later, I have my IMEI but no signal. What can I do?"
Click to expand...
Click to collapse
Thank you
I installed the twrp flashable stock and I got my 3g back, i did the OTA update and now I think its bricked, It will only boot to twrp :crying:
vonwap said:
Thank you
I installed the twrp flashable stock and I got my 3g back, i did the OTA update and now I think its bricked, It will only boot to twrp :crying:
Click to expand...
Click to collapse
Try flashing one of the full flashable zips from that thread, get the last one. But in the installer, do not select firmware.
Hopefully that will get you going again. And no, don't ever install an ota.
NZedPred said:
Try flashing one of the full flashable zips from that thread, get the last one. But in the installer, do not select firmware.
Hopefully that will get you going again. And no, don't ever install an ota.
Click to expand...
Click to collapse
Thanks for all your help is there any way to fix OTA updates? like relocking bootloader? or should I just leave that unlocked ?
I just installed \POTTER_NPNS25.137-93-4_cid50_subsidy-DEFAULT_regulatory-DEFAULT_CFC.xml
and am getting a 3g \ H signal now but its a different sim card and service from original card, seems to be working now
Is it just oreo that screws everything up , I know this is all over but its not very straight forward
im no android expert clearly
vonwap said:
Thanks for all your help is there any way to fix OTA updates? like relocking bootloader? or should I just leave that unlocked ?
I just installed \POTTER_NPNS25.137-93-4_cid50_subsidy-DEFAULT_regulatory-DEFAULT_CFC.xml
and am getting a 3g \ H signal now but its a different sim card and service from original card, seems to be working now
Is it just oreo that screws everything up , I know this is all over but its not very straight forward
im no android expert clearly
Click to expand...
Click to collapse
Bootloader doesn't matter, can stay unlocked.
And the IMEI/4g problem is Nougat only, never heard of someone who lost something on Oreo or when updating to it.
If you flash latest Oreo firmware for your region (endings with 17-xx are US, 13-xx is for the rest as far as I know) you should be good to go.

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