Related
So,
My phone is vns-l21c66b131 and is there any way to update to newer versions without rooting and if possible can someone write steps on how to do it?
If you use <SEARCH> you find followings:
<After a few day of reading users personal experiences regarding upgrade to Android 7 Nougat i make the big step myself...
My device is VNS-L21 model and entire process goes flawless...
Device state was stock MM VNS-L21C432B150, bootloader lock, dualsim enabled.
1. Unlock bootloader folowing by Automatic Factory Reset.
2. Flash TWRP
3. From TWRP i flash Meticulus TWRP
4. Reboot to TWRP and flash update.zip and update_data_full_VNS-L31_hw_eu.zip, both flash ends with errors, without reboot between flashes.
5. After that, i reboot device and boot in system ok, start configuration, etc.
6. I reboot to fastboot and flash Nougat Recovery reworked by @BadWolfYe
I am not experienced camera bug, all works fine and i have now a fully functional phone.
BTW, dualsim remain enabled and works both sims.
Thanks to all contributors for these pieces of firmware, first of all to @BadWolfYe!>
For that's is <SEARCH>, not to open another topic for same problem...
Thanks for the reply, but I'm not talking about Nougat, I talk about MM b161 update. How to do it if my carrier is c66 and the newest update there is b131
Coolyou said:
Thanks for the reply, but I'm not talking about Nougat, I talk about MM b161 update. How to do it if my carrier is c66 and the newest update there is b131
Click to expand...
Click to collapse
If you want to stay on C66 you have to wait to OTA updates...
If you make any upgrade via dload folder on sdcard your phone will go from C66 to C900 (global)
Another alternative is to debrand your phone to C432 (hw eu)
For any of this is treated here in some topics...
So I just need to create dload folder and put the zip there?
Coolyou said:
So I just need to create dload folder and put the zip there?
Click to expand...
Click to collapse
Not the zip! Put the update.app wich is in the zip, for this method.
The zip is ok for update from TWRP.
gtdaniel said:
Not the zip! Put the update.app wich is in the zip, for this method.
The zip is ok for update from TWRP.
Click to expand...
Click to collapse
Do i lose warranty if i change to global ?
Since the 7.1.1 update for chinese a2017 isn't full update file, can we extract the modem from it?
I want to convert my unit to US version using miflash method and I have already done this before but I get problems with signal even after flashing chinese modem from LOS thread by @Unjustified Dev. Although, this signal problem is quite specific with my carrier since I get a stable OS and signal using a different carrier/sim.
I'm thinking about doing it via twrp. Here are the steps I had in mind:
1. From b13, update to 7.1.1 via stock recovery.
2. after finishing setup of 7.1.1, I'll install twrp via fastboot.
3. back up everything in twrp.
4. miflash full b15 US version and twrp.
5. restore modem from twrp from my backup.
Do you think this will work? Or not, since B15 isn't 7.1.1?
Hopefully devs here can also share their thoughts. @ @DrakenFX @Oki @jcadduono
Thanks!
BTW, I attached a pic of what's inside the 7.1.1 update including the contents of patch folder.
otaconremo said:
Since the 7.1.1 update for chinese a2017 isn't full update file, can we extract the modem from it?
I want to convert my unit to US version using miflash method and I have already done this before but I get problems with signal even after flashing chinese modem from LOS thread by @Unjustified Dev. Although, this signal problem is quite specific with my carrier since I get a stable OS and signal using a different carrier/sim.
I'm thinking about doing it via twrp. Here are the steps I had in mind:
1. From b13, update to 7.1.1 via stock recovery.
2. after finishing setup of 7.1.1, I'll install twrp via fastboot.
3. back up everything in twrp.
4. miflash full b15 US version and twrp.
5. restore modem from twrp from my backup.
Do you think this will work? Or not, since B15 isn't 7.1.1?
Hopefully devs here can also share their thoughts. @ @DrakenFX @Oki @jcadduono
Thanks!
BTW, I attached a pic of what's inside the 7.1.1 update including the contents of patch folder.
Click to expand...
Click to collapse
Any idea if this worked?
Also will the Chinese modem from the lineage OS thread work with the latest 7.1.1 update
Is it possible to install european modem on chinese variant? And do I need to unlock bootloader?
Fuilares said:
Is it possible to install european modem on chinese variant? And do I need to unlock bootloader?
Click to expand...
Click to collapse
You could but you probably won't have any signal, might even break wifi.
Modem/bootstack need to match device.
Hi guys, i updated my VNS-L31 into nougat test-key, i wanted to downgrade to stock MM because there's a lot of bugs, when i'm trying to install img file from fastboot, it always failed and i saw in my phone "Phone LOCKED" it was previously unlocked. Can anyone help my unlocking my device with
L31-900B300 build number? thanks!
kevshots said:
Hi guys, i updated my VNS-L31 into nougat test-key, i wanted to downgrade to stock MM because there's a lot of bugs, when i'm trying to install img file from fastboot, it always failed and i saw in my phone "Phone LOCKED" it was previously unlocked. Can anyone help my unlocking my device with
L31-900B300 build number? thanks!
Click to expand...
Click to collapse
Use the same unlock code you've used before, get it again.
And why are you using that build B300, you could have at leasT tried B336, which in my opinion isn't having any problems noticeable, battery drain also good...people complain about this, but if you know what you're doing this will never be an issue.
_New World Order (NWO)_
Thanks for the response, I'll try tomorrow, i've already forgotten and deleted the code. Actually, it's all misunderstanding on why i flashed this build lol. I am planning to revert to MM stock and i'm still looking for some guide on how to. I tried other methods and didn't get luck. If you have any ideas would you mind helping me again? Thanks!
kevshots said:
Thanks for the response, I'll try tomorrow, i've already forgotten and deleted the code. Actually, it's all misunderstanding on why i flashed this build lol. I am planning to revert to MM stock and i'm still looking for some guide on how to. I tried other methods and didn't get luck. If you have any ideas would you mind helping me again? Thanks!
Click to expand...
Click to collapse
Follow this https://forum.xda-developers.com/showthread.php?p=71203214 and you should find what you need, if still confused, just sent a PM or post here.
_New World Order (NWO)_
[email protected] said:
Follow this https://forum.xda-developers.com/showthread.php?p=71203214 and you should find what you need, if still confused, just sent a PM or post here.
_New World Order (NWO)_
Click to expand...
Click to collapse
Yeah I've already seen this and i'm not sure on what to download, i tried once but it says
"software install failed!"
"Incompatibility with the current version.
Please download the correct update package."
and i can't still unlock my bootloader, the website is new, and it won't redirect me to unlocking SITE from this thread LINK.
also just wondering, in this method, is it require to unlock the bootloader ? thank you so much for helping me.
kevshots said:
Yeah I've already seen this and i'm not sure on what to download, i tried once but it says
"software install failed!"
"Incompatibility with the current version.
Please download the correct update package."
and i can't still unlock my bootloader, the website is new, and it won't redirect me to unlocking SITE from this thread LINK.
also just wondering, in this method, is it require to unlock the bootloader ? thank you so much for helping me.
Click to expand...
Click to collapse
This method don't require unlocked bootloader, don't require TWRP.
Just get the rollback file and full MM update file.
Install rollback first then MM file after, put the extracted update.app files In the dload folder on root of sdcard, one by one after each install
Or
If you don't want to use rollback file, unlock bootloader, then flash patched oeminfo file via:
1.fastboot using this command: fastboot flash oeminfo xxx (xxx= name of oemifo zip you have, ie. fastboot flash oeminfo C432oeminfoDual.zip)
Or
2.while In fastboot flash revolution nougat recovery, then boot into it by "vol up + power" then flash the patched oeminfo,
Then once flashed OEMINFO then install via 3 buttons mode the update.app of your firmware, this must be in dload folder on sdcard as above.if asked for password then use "reset"
_New World Order (NWO)_
[email protected] said:
Follow this https://forum.xda-developers.com/showthread.php?p=71203214 and you should find what you need, if still confused, just sent a PM or post here.
_New World Order (NWO)_
Click to expand...
Click to collapse
[email protected] said:
This method don't require unlocked bootloader, don't require TWRP.
Just get the rollback file and full MM update file.
Install rollback first then MM file after, put the extracted update.app files In the dload folder on root of sdcard, one by one after each install
Or
If you don't want to use rollback file, unlock bootloader, then flash patched oeminfo file via:
1.fastboot using this command: fastboot flash oeminfo xxx (xxx= name of oemifo zip you have, ie. fastboot flash oeminfo C432oeminfoDual.zip)
Or
2.while In fastboot flash revolution nougat recovery, then boot into it by "vol up + power" then flash the patched oeminfo,
Then once flashed OEMINFO then install via 3 buttons mode the update.app of your firmware, this must be in dload folder on sdcard as above.if asked for password then use "reset"
_New World Order (NWO)_
Click to expand...
Click to collapse
I was able to revert to MM using this HUAWEI P9 Lite Firmware i don't know how, but it worked today. LOL, lastly, i just have a question to revolutionaryTWRP, i tried it once when i was having problem with ROM, and it couldn't even mount internal storage, but for other people i saw here in xda, they can even flash zip files from it. just wondering if there are other Revolutionary TWRP versions or it's all about the tutorial on using RevolutionaryTWRP? anyways, thank you so much again. and how can i tag this thread as solved by the way?
kevshots said:
I was able to revert to MM using this HUAWEI P9 Lite Firmware i don't know how, but it worked today. LOL, lastly, i just have a question to revolutionaryTWRP, i tried it once when i was having problem with ROM, and it couldn't even mount internal storage, but for other people i saw here in xda, they can even flash zip files from it. just wondering if there are other Revolutionary TWRP versions or it's all about the tutorial on using RevolutionaryTWRP? anyways, thank you so much again. and how can i tag this thread as solved by the way?
Click to expand...
Click to collapse
Edit title to solved.
The current TWRP by Revolution for nougat can't mount /data partition, and if you need flash anything there, you've got to change filesystem as advised In the tutorials, but you can flash mods or apps to system partition without problems....this problem is In nougat TWRP only currently, MM TWRP has no issues at all...anyways good to hear your sorted!
_New World Order (NWO)_
[email protected] said:
Edit title to solved.
The current TWRP by Revolution for nougat can't mount /data partition, and if you need flash anything there, you've got to change filesystem as advised In the tutorials, but you can flash mods or apps to system partition without problems....this problem is In nougat TWRP only currently, MM TWRP has no issues at all...anyways good to hear your sorted!
_New World Order (NWO)_
Click to expand...
Click to collapse
okay, Thank you so much danerrickcuba for helping me out. :good: :highfive:
I got A2017U with B25 update and i want to downgrade it to b19.
Having problem after B25 update with my camera OIS.
IS there any way i can downgrade it to B19?
My phone came with MM. I manually moved up to B19 via DrakenFX's tutorials. I recently went up to B25 but went back to B19.
Is your phone already unlocked, rooted, and all that?
If not, his tutorial at the ZTE Community forums is what I used.
https://community.zteusa.com/message/97357
Then I moved to the following to get B19.
http://forum.xda-developers.com/showthread.php?t=3469484
[ROM/GUIDE] Full Updates / Back to Stock Files via TWRP (A2017U, A2017G, A2017)
Since the thread now deals with B25, here's where the downloads are for B19. Just use these in place of B25 files.
https://www.androidfilehost.com/?w=files&flid=162830
LG G3 D851, PAC-MAN LP ROM, MultiROM, Tapatalk 4.9.5
teji007 said:
I got A2017U with B25 update and i want to downgrade it to b19.
Having problem after B25 update with my camera OIS.
IS there any way i can downgrade it to B19?
Click to expand...
Click to collapse
You can download B19 directly from ZTE and flash it without needing to be unlocked. Just need to extract the update.zip and put it on sdcard and then the stock recovery will install it.
You can find the link for B19 and instructions from ZTE here under "Software Updates".
Thanks
-Duir- said:
You can download B19 directly from ZTE and flash it without needing to be unlocked. Just need to extract the update.zip and put it on sdcard and then the stock recovery will install it.
You can find the link for B19 and instructions from ZTE here under "Software Updates".
Click to expand...
Click to collapse
Thank You Sir
I have a new (3 day) that updated to b25. Was and is totally stock. Not happy.
Mar was way better on battery and performance. I have downloaded and renamed
b15 factory ota and placed in the sdcard. System update reports a valid update but before I
commit to doing this I wanted to verify with the community that it is safe to do.
After I do this update I am wondering if I can find a factory ota of mar if I can do the same thing again.
Thanks in advance
2CanSan said:
I have a new (3 day) that updated to b25. Was and is totally stock. Not happy.
Mar was way better on battery and performance. I have downloaded and renamed
b15 factory ota and placed in the sdcard. System update reports a valid update but before I
commit to doing this I wanted to verify with the community that it is safe to do.
After I do this update I am wondering if I can find a factory ota of mar if I can do the same thing again.
Thanks in advance
Click to expand...
Click to collapse
It's really simple actually: if you install B15 your data will be wiped, after that just skip everything and update to B29 (is B29 the latest? I have a G, dunno) and then use it. What you describe is not the actual performance that it should have, it's your specific case obviously.
I know what you want to do - if you want to remain TOTALLY STOCK I think you are out of options as I don't know anywhere that you can still download the stock ZTE B29 marshmallow. If you are willing to unlock your bootloader and install TWRP then somewhere in here DrakenFX has a B29 rollback that works great - it just won't work with stock recovery
tabletalker7 said:
I know what you want to do - if you want to remain TOTALLY STOCK I think you are out of options as I don't know anywhere that you can still download the stock ZTE B29 marshmallow. If you are willing to unlock your bootloader and install TWRP then somewhere in here DrakenFX has a B29 rollback that works great - it just won't work with stock recovery
Click to expand...
Click to collapse
All I really want is to remain stock but rooted and with TWRP for recovery for Nandroid backups. The B25 will not let me unlock the bootloader with Fastboot and when running MiFlash the phone is visible but getting "Hello packet error" I have read another method with fastboot but have not tried it yet (below). Somewhere I read that B25 was the problem and you had to downgrade and the MiFlash method was recommended.
adb reboot bootloader
fastboot devices
fastboot oem unlock
fastboot reboot
I did everything but the first entry.
Thanks for any suggestions.
2CanSan said:
All I really want is to remain stock but rooted and with TWRP for recovery for Nandroid backups. The B25 will not let me unlock the bootloader with Fastboot and when running MiFlash the phone is visible but getting "Hello packet error" I have read another method with fastboot but have not tried it yet (below). Somewhere I read that B25 was the problem and you had to downgrade and the MiFlash method was recommended.
adb reboot bootloader
fastboot devices
fastboot oem unlock
fastboot reboot
I did everything but the first entry.
Thanks for any suggestions.
Click to expand...
Click to collapse
Go ahead with your rollback to B15 - that will let you unlock and install TWRP. Once you have TWRP go to this thread https://forum.xda-developers.com/axon-7/development/rom-guide-updates-to-stock-files-via-t3469484 and in post #2 you will find A2017UV1.0.0B29_RollBackModded.zip. Flash that, then flash TWRP again (you have to flash TWRP again ONLY if you want to keep TWRP as this flash file will automatically reinstall stock recovery). Also note on B29 I had to use SuperSU 2.65 (not the current one) for root.
tabletalker7 said:
Go ahead with your rollback to B15 - that will let you unlock and install TWRP. Once you have TWRP go to this thread https://forum.xda-developers.com/axon-7/development/rom-guide-updates-to-stock-files-via-t3469484 and in post #2 you will find A2017UV1.0.0B29_RollBackModded.zip. Flash that, then flash TWRP again (you have to flash TWRP again ONLY if you want to keep TWRP as this flash file will automatically reinstall stock recovery). Also note on B29 I had to use SuperSU 2.65 (not the current one) for root.
Click to expand...
Click to collapse
By the system update.zip method?
Thanks
Also I would be happy to stay at b15 with TWRP and root.
2CanSan said:
By the system update.zip method?
Thanks
Also I would be happy to stay at b15 with TWRP and root.
Click to expand...
Click to collapse
Wait - you wanted to stay stock? You didn't actually have to unlock if you wanted to. Just by using the update.zip method with some Marshmallow zip you could get to MM, and then you can update to N and you surely won't get the same problems that you've been having...
For example my G is on 7.1.1 and I get 6h+ of battery (right now, 3h36m with 41% left) so your problem is just that your installation was bad. If you unlocked you might as well just do the process that the guy above described though.
2CanSan said:
By the system update.zip method?
Thanks
Also I would be happy to stay at b15 with TWRP and root.
Click to expand...
Click to collapse
Choose an username... said:
Wait - you wanted to stay stock? You didn't actually have to unlock if you wanted to. Just by using the update.zip method with some Marshmallow zip you could get to MM, and then you can update to N and you surely won't get the same problems that you've been having...
For example my G is on 7.1.1 and I get 6h+ of battery (right now, 3h36m with 41% left) so your problem is just that your installation was bad. If you unlocked you might as well just do the process that the guy above described though.
Click to expand...
Click to collapse
OK on the A2017U units you need the official marshmallow B29 package to roll back, and that only works with stock recovery on a clean B15 N install. The Rollback package I told you to use earlier will roll you back to B29 marshmallow NO MATTER WHAT YOU ARE USING (I have used this a lot, and OBVIOUSLY there are differences between the the A2017U version in North America and the A2017G version in Europe). If you want stock and rooted, I personally recommend B29 marshmallow over B15 Nougat, but either way go for it (I think the marshmallow had a much better radio than any of the Nougat packages). If you are interested in TWRP and root, I found B29 marshmallow much easier for both, and the marshmallow version of android also gives you Xposed, but back to your first post, you mentioned wanting marshmallow, and this is the best way to get it.
Step by Step method
1. Roll back to B15. Use the update.zip method. It will factory reset your device so backup everything you can't lose
2. Use MiFlash to unlock and install TWRP - check that thread on XDA for instructions.
3. (If desired) In TWRP, install the B29 marshmallow rollback. Do not reboot into system afterwards.
4. (If step 3 is done) In TWRP, flash TWRP. The marshmallow rollback will overwrite recovery with stock recovery
If you do this you will have exactly what you wanted in your original post. I can personally tell you this works, as I have tried every custom rom on here and always wind up back at B29 marshmallow when all is said and done. It has never failed me, and it will never fail you either.