Database Users

Can we get a Step by Step to update to 27?

So my scenario.
I'm on the unlocked B20_boot Build. Rooted. TWRP.
What files are needed to upgrade to B27?
What are the step by step?
I have read through the different threads, but it is confusing at times and rather not make a mistake. It would probably benefit multiple people.
Cheers!

I'm in the same boat. I downgraded to B20 and cannot get the .up file provided recognized in recovery to flash. Using the system updater just puts me right back on B20_Boot. Just using the twrp backup does not flash the B27 firmware.

bhazard451 said:
I'm in the same boat. I downgraded to B20 and cannot get the .up file provided recognized in recovery to flash. Using the system updater just puts me right back on B20_Boot. Just using the twrp backup does not flash the B27 firmware.
Click to expand...
Click to collapse
Change the .up to .zip and try again. This is the safest method to B27.

jkuczera said:
Change the .up to .zip and try again. This is the safest method to B27.
Click to expand...
Click to collapse
Changing it to .zip does not work.

B4oE said:
Changing it to .zip does not work.
Click to expand...
Click to collapse
From stock recovery?

jkuczera said:
From stock recovery?
Click to expand...
Click to collapse
Correct. I was on stock B20 and downloaded the .up file from the following link: https://dl1.ztems.com/zxmdmp/download.do?doWhat=getUp&filename=firmwarepackages/US/ZTE/ZTE%20A2017U/81526/update_P996A01_B20_to_B27.up. After I downloaded it, I simply changed the .up extension to .zip to try to install through stock recovery. However, it was not even recognized. I even moved it to my SD Card but got the same results.

B4oE said:
Correct. I was on stock B20 and downloaded the .up file from the following link: https://dl1.ztems.com/zxmdmp/downlo...TE A2017U/81526/update_P996A01_B20_to_B27.up. After I downloaded it, I simply changed the .up extension to .zip to try to install through stock recovery. However, it was not even recognized. I even moved it to my SD Card but got the same results.
Click to expand...
Click to collapse
Maybe verify checksum? That's the method I used (from SD card).

Interesting. ADB Sideload should work if the Apply Update from SD Card method doesn't.

B4oE said:
Correct. I was on stock B20 and downloaded the .up file from the following link: https://dl1.ztems.com/zxmdmp/download.do?doWhat=getUp&filename=firmwarepackages/US/ZTE/ZTE%20A2017U/81526/update_P996A01_B20_to_B27.up. After I downloaded it, I simply changed the .up extension to .zip to try to install through stock recovery. However, it was not even recognized. I even moved it to my SD Card but got the same results.
Click to expand...
Click to collapse
Enable OEM unlocking under dev. Option and go back to stock recovery > Apply using SDCard.

DrakenFX said:
Enable OEM unlocking under dev. Option and go back to stock recovery > Apply using SDCard.
Click to expand...
Click to collapse
I did that already too. But it still didn't work. Don't worry about it, though. I appreaciate the help, however, I am just going to wait for CyanogenMod to be released. I only wanted to test out the new update. It's not worth the frustration, though. I honestly prefer CyanogenMod.

B4oE said:
I did that already too. But it still didn't work. Don't worry about it, though. I appreaciate the help, however, I am just going to wait for CyanogenMod to be released. I only wanted to test out the new update. It's not worth the frustration, though. I honestly prefer CyanogenMod.
Click to expand...
Click to collapse
Don't expect it anytime soon within the next 3 months.
The updates to the firmware and software are substantial enough that I need to find a 100% working method that I can confirm that takes me from B20_boot, downgraded to B20, then updated to B27 from stock recovery.

bhazard451 said:
Don't expect it anytime soon within the next 3 months.
The updates to the firmware and software are substantial enough that I need to find a 100% working method that I can confirm that takes me from B20_boot, downgraded to B20, then updated to B27 from stock recovery.
Click to expand...
Click to collapse
I am with you. @DrakenFX Do you have the steps mentioned above? What is the best way to get back to B20 so it can be updated to B27?

swehes said:
I am with you. @DrakenFX Do you have the steps mentioned above? What is the best way to get back to B20 so it can be updated to B27?
Click to expand...
Click to collapse
The best way would be a System Image from ZTE, but we are SOL on that for now.

Bricked my LeEco Pro 3 while installing CM13, need some help and advice.

Hi Guys,
Long story short, I bought the LeEco Pro 3 US version due to the awesome Tmobile network support. The modem supports band 12 and WiFi calling and I was happy with it. But eventually notification issues and the horrible EUI got under my skin and I decided to install CM13 keeping the phone as untouched as possible so that I can revert back to stock whenever needed.
I followed below steps:
1. Enabled developer options and enabled USB debugging.
2. Went the Developer Options and enabled OEM Unlocking.
3. Did adb reboot bootloader to get into the bootloader menu.
4. Did fastboot unlock-go command to unlock the bootloader. I noticed that if I did this command and rebooted the phone, the phone reverted back to being locked again. But I could run the command again from bootloader screen and unlock it (as long as the developer options had the OEM unlocking enabled). So I was never permanently unlocked, just unlock at will whenever I wanted.
5. Then I downloaded the twrp.img file and from fastboot screen i did fastboot boot twrp.img, which booted me inot twrp screen. I was able to switch the language to english but i didnt do the permanent system modification. I did not root the phone as well through the menu.
6. Now, I plugged in a USB OTG drive in the phone. Usb OTG drive had CM13 ROM + Gapps on it.
7. Using the TWRP menu, I did a factory data reset and made a backup of all partitions of the LeEco Phone and saved it into USB OTG drive.
8. Then I installed the CM13 rom on the phone. Followed by Gapps and then rebooted the phone. The phone wouldnt boot.
9. I immediately rebooted the phone into the fastboot menu and tried to run the fastboot boot twrp.img, and got an error message that the device is not unlocked. Which is when i noticed that the phone is bricked.
So Long story short, I have a locked bootloader and I want to to retain my modem. I was given a suggestion to boot into the stock recovery and put the x720 update.zip file and install it. But that would flash the CN modem as well. Can I delete the modem file from the CN rom and flash the update.zip? Can someone help me there? All I want is the modem for the US rom and CM13, thats it.
Thank you guys for reading this post, it helps to talk to XDA about such issues, my wife would just kick my butt because I broke a phone, again!

Did you wipe the system using twrp before installing CM?

sunbinyuan said:
Did you wipe the system using twrp before installing CM?
Click to expand...
Click to collapse
No I didn't wipe the system before installing CM13. Usually the ROM installation scripts do system wipes.

This is the reason why I am hesitant to do this thing as there are no clear (step-by-step) procedures and there is no solid benefit (in fact your will lose some features). Can't it be possible to just create a CM or any other ROM that could be downloaded and rename into update.zip and load it directly renaming the X720 ROM? ^_^

Try unlocking bootloader again with fastboot method as you didn't do it the first time. Then try fastboot boot twrp.img

srikanthc said:
Try unlocking bootloader again with fastboot method as you didn't do it the first time. Then try fastboot boot twrp.img
Click to expand...
Click to collapse
He will not be able to unlock again due to the fact that he installed CM13 on an unlocked bootloader. I did read where you can flash the CN bootloader on a locked bootloader. Look at post #44 from the "X727 (US Model) Persistent bootloader unlock from 5.8.019s" thread.
http://forum.xda-developers.com/le-pro3/development/x727-model-persistent-bootloader-unlock-t3500388
"I finished the setup and run fastboot again and it is good so for anyone having the same issue as I was having of not able to unlock, just run: Fastboot Flash aboot emmc_appsboot.mbn get the file from dr4stic zip file"
Followed by post #47:
"Yeah I can confirm that flashing the aboot worked like dish soap on a squeaky hinge."
If that doesn't work then you will need to install the CN rom using the stock bootloader.

zoid_99 said:
He will not be able to unlock again due to the fact that he installed CM13 on an unlocked bootloader. I did read where you can flash the CN bootloader on a locked bootloader. Look at post #44 from the "X727 (US Model) Persistent bootloader unlock from 5.8.019s" thread.
http://forum.xda-developers.com/le-pro3/development/x727-model-persistent-bootloader-unlock-t3500388
"I finished the setup and run fastboot again and it is good so for anyone having the same issue as I was having of not able to unlock, just run: Fastboot Flash aboot emmc_appsboot.mbn get the file from dr4stic zip file"
Followed by post #47:
"Yeah I can confirm that flashing the aboot worked like dish soap on a squeaky hinge."
If that doesn't work then you will need to install the CN rom using the stock bootloader.
Click to expand...
Click to collapse
I ended up installing CN ROM as my last resort. I have an unlocked bootloader and twrp installed now, with CM13. Now I need the way to go back to US modem so I can get all the bands.
Sent from my LEX720 using Tapatalk

ceo.mtcl said:
I ended up installing CN ROM as my last resort. I have an unlocked bootloader and twrp installed now, with CM13. Now I need the way to go back to US modem so I can get all the bands.
Sent from my LEX720 using Tapatalk
Click to expand...
Click to collapse
1. Download the rom from here: https://www.androidfilehost.com/?fid=601275311581036717
2. Unzip and extract the NON-HLOS.img file.
3. Reboot into fastboot mode.
4. Flash the modem "fastboot flash modem NON-HLOS.img"
You will not notice a change in the modem version in "About Phone" as they both report Baseband version MPSS.2.0.c1.9.1-00010. Who knows, they may be the same.

zoid_99 said:
1. Download the rom from here: https://www.androidfilehost.com/?fid=601275311581036717
2. Unzip and extract the NON-HLOS.img file.
3. Reboot into fastboot mode.
4. Flash the modem "fastboot flash modem NON-HLOS.img"
You will not notice a change in the modem version in "About Phone" as they both report Baseband version MPSS.2.0.c1.9.1-00010. Who knows, they may be the same.
Click to expand...
Click to collapse
Is this NON HLOS.img file from US baseband? Can you please help me in locating where it came from before I flash it. Thanks in advance.
Sent from my LEX720 using Tapatalk

ceo.mtcl said:
Is this NON HLOS.img file from US baseband? Can you please help me in locating where it came from before I flash it. Thanks in advance.
Sent from my LEX720 using Tapatalk
Click to expand...
Click to collapse
That is from the US baseband. That rom will convert a CN install back to a US install.

zoid_99 said:
That is from the US baseband. That rom will convert a CN install back to a US install.
Click to expand...
Click to collapse
Thank you, is that from your phone or did you found it in some other post out here that I missed Zoid? I'm just looking for source of the file.
Sent from my LEX720 using Tapatalk

It's from this thread.
http://forum.xda-developers.com/le-pro3/how-to/flashing-guide-roundup-leeco-le-pro-3-t3511901
"
Okay, if you chose to use the long route and installed the Chinese ROM, you can still get back to the full US version, complete with all LTE bands. dr4stic is responsible for this gem, and was my way back to US ROMdom.
To go from Chinese or Custom ROM back to Stock US version:
The file is located in his Android File Host space here: https://www.androidfilehost.com/?fid=601275311581036717
"

ceo.mtcl said:
No I didn't wipe the system before installing CM13. Usually the ROM installation scripts do system wipes.
Click to expand...
Click to collapse
Sorry for the late answer but to add to that, it happened to me that the ROM didn't have a wipe script thus bricking another of my device. I reinstalled it after wiping the system and it worked.

A2017 flashed A2017U B29 failed to update to Nougat

I download the packacke via OTA and restart device. Then it boots to TWRP. I have to reboot device again and it goes back 6.0.1 with failed update notification. My deivice is unroot and still lock bootloader. Is there anyone having the same issue with me? And possible way to fix?
Thanks

Thalias said:
I download the packacke via OTA and restart device. Then it boots to TWRP. I have to reboot device again and it goes back 6.0.1 with failed update notification. My deivice is unroot and still lock bootloader. Is there anyone having the same issue with me? And possible way to fix?
Thanks
Click to expand...
Click to collapse
You have to restore stock B29 recovery. You can't accept an OTA with TWRP.

bkores said:
You have to restore stock B29 recovery. You can't accept an OTA with TWRP.
Click to expand...
Click to collapse
Thanks. I am downloading again. Hope it works this time.

bkores said:
You have to restore stock B29 recovery. You can't accept an OTA with TWRP.
Click to expand...
Click to collapse
It still fails. After restarting device it boots into installing screen with miFavor logo instead of TWRP. The processing bar runs to about 24% then stops to reboot. I notice that the log at bottom screen say mismatch. And I got message system update package does not match the phone.

Thalias said:
It still fails. After restarting device it boots into installing screen with miFavor logo instead of TWRP. The processing bar runs to about 24% then stops to reboot. I notice that the log at bottom screen say mismatch. And I got message system update package does not match the phone.
Click to expand...
Click to collapse
You modified /system . You should probably flash official b29 firmware from ZTE and then update to nougat

Teet1 said:
You modified /system . You should probably flash official b29 firmware from ZTE and then update to nougat
Click to expand...
Click to collapse
I got b29 from zte website. Can I install it with stock recovery?

Thalias said:
Is there a link to download it?
Click to expand...
Click to collapse
https://www.zteusa.com/axon-7
Go under Support<Software Updates.

bkores said:
https://www.zteusa.com/axon-7
Go under Support<Software Updates.
Click to expand...
Click to collapse
Can I install it with stock recovery?

Thalias said:
Can I install it with stock recovery?
Click to expand...
Click to collapse
You have to install it in stock recovery. Put it on your FAT32 sdcard and then in stock recovery select "Apply update from sdcard".

bkores said:
You have to install it in stock recovery. Put it on your FAT32 sdcard and then in stock recovery select "Apply update from sdcard".
Click to expand...
Click to collapse
I got following message at bottom left of screen
Supported API: 3
Sorry, you can't sd upgrade

I think you have to enable OEM unlock in developer options, first. Then, you can install B29 via SDCard.

MiMtnBiker said:
I think you have to enable OEM unlock in developer options, first. Then, you can install B29 via SDCard.
Click to expand...
Click to collapse
Thanks. I forgot to unzip the file and put it in the root of sd card and I have done what you said too. It is running installation now.

I'm failing now? I went from ZAD v.3 back to stock B29 (I have an unlocked bootloader). I do have the MiFavor recovery (not TWRP)
I got the notification there was an upgrade, it took 6 hours to download... but the update "failed". I tried applying the update via SD card, but I get about 32% in and says "Update failed"......It also lists "Status 8" and "system partition has unexpected contents".

Sounds like y'all are having a hell of a time between the slow OTA speeds and then getting it to actually flash.
So I think I'll hold off for now. Hopefully we can get some TWRP-flashable zips soon enough... I think DrakenFX is already busy with all that

You guys are making this way too complicated.
The full B29 firmware will flash just fine with twrp.
Only OTA *updates* require the stock recovery. The difference is the update patches existing files while the full firmware contains full partition images.
Be aware if you download the full b29 firmware from zte, it will also replace your recovery and bootloader. You won't be able to flash recovery from the bootloader/fastboot screen then. Also, it wipes all your data.
DrakenFX put out a modified version of the full firmware file which doesn't modify the bootloader. I believe it also leaves the recovery intact.

After flashing official A2017U B29 firmware from ZTE the signal network service is lost. I ignore this and continue to upgrade to Nougat successfully and I get lost signal. I notice that Dual Sim Setting is working. Does official firmware overwrite original chinese baseband/bootstack? Can someone please upload chinese baseband/bootstack A2017 please?

gpz1100 said:
You guys are making this way too complicated.
The full B29 firmware will flash just fine with twrp.
Only OTA *updates* require the stock recovery. The difference is the update patches existing files while the full firmware contains full partition images.
Be aware if you download the full b29 firmware from zte, it will also replace your recovery and bootloader. You won't be able to flash recovery from the bootloader/fastboot screen then. Also, it wipes all your data.
DrakenFX put out a modified version of the full firmware file which doesn't modify the bootloader. I believe it also leaves the recovery intact.
Click to expand...
Click to collapse
No more complicated than it's turned out to be....
I followed DrakenFX's guide to B29 stock... The Nougat OTA downloaded, in 6 hours, but failed. So, I tried the SD card method, and it also failed at 32%.
Not sure what else I can do? Just wait for DrakenFX to make ZAD v.4 is my plan for now since I already wasted about 11 hours trying to upgrade today, and another 3 restoring back 6.0.1 and all my apps.

tele_jas said:
No more complicated than it's turned out to be....
I followed DrakenFX's guide to B29 stock... The Nougat OTA downloaded, in 6 hours, but failed. So, I tried the SD card method, and it also failed at 32%.
Not sure what else I can do? Just wait for DrakenFX to make ZAD v.4 is my plan for now since I already wasted about 11 hours trying to upgrade today, and another 3 restoring back 6.0.1 and all my apps.
Click to expand...
Click to collapse
No problem upgrading using the OTA on an sdcard here. Flashed the draken stock_system zip, then fastboot flashed the B29 stock recovery. Reboot to recovery (which is now stock) and update from sd card. If you've messed with other partitions, you may need to flash more B29 .img's.

Thalias said:
After flashing official A2017U B29 firmware from ZTE the signal network service is lost. I ignore this and continue to upgrade to Nougat successfully and I get lost signal. I notice that Dual Sim Setting is working. Does official firmware overwrite original chinese baseband/bootstack? Can someone please upload chinese baseband/bootstack A2017 please?
Click to expand...
Click to collapse
hey why you flashed us version firmware on chinise version?
i have aslo chinise version of the phone with b09G firmware im afraid loose signal too

yosef019 said:
hey why you flashed us version firmware on chinise version?
i have aslo chinise version of the phone with b09G firmware im afraid loose signal too
Click to expand...
Click to collapse
I don't know Chinese so I prefer Eng community with support and US region always get latest update first.

Do Full Stock files modify bootstack?

Question: If I install a full stock zip, does it overwrite:
Boot stack? <- Yes if from stock recovery / ? if from TWRP
Fastboot? <- Yes if from stock recovery / No if from TWRP
Recovery? <- Yes if from stock recovery / Yes if from TWRP
I've flashed a full stock zip and fastboot. just want to make sure I don't need to also flash stock bootstack for RMA purposes.

witchcraftz said:
Question: If I install a full stock zip, does it overwrite:
Boot stack? <- ?
Fastboot? <- No
Recovery? <- Yes
I've flashed a full stock zip and fastboot. just want to make sure I don't need to also flash stock bootstack for RMA purposes.
Click to expand...
Click to collapse
If you want to RMA your phone, flash an official zip through the official recovery. Those overwrite the bootstack, the recovery and the bootloader. Or use MiFlash. But I wouldn't risk locking the bootloader with not everything fully stock...
After flashing the official zip use axon7toolkit to relock.

I followed this process and I locked my phone.
https://forum.xda-developers.com/showpost.php?p=73576556&postcount=47
I'll download the latest Official Zip form ZTE and flash it officially just to make sure.
https://www.zteusa.com/axon-7#support
Thanks

I have been able to download OTAs and update this way.
But when I try to flash a Stock update.zip either from SD card or internal storage it gives me an error about not being able to mount the SD card.
Will the OTA updates also overwrite to boot stack?

Choose an username... said:
If you want to RMA your phone, flash an official zip through the official recovery. Those overwrite the bootstack, the recovery and the bootloader.
Click to expand...
Click to collapse
The phone downloaded the OTA for B19 and was able to run the update. How does ZTE check for a phone having been modified? Are there some steps or commands that can be run to check before sending it in? Should I just reflash the B19 full stock from Miflash to be sure everything is back to stock?

witchcraftz said:
The phone downloaded the OTA for B19 and was able to run the update. How does ZTE check for a phone having been modified? Are there some steps or commands that can be run to check before sending it in? Should I just reflash the B19 full stock from Miflash to be sure everything is back to stock?
Click to expand...
Click to collapse
We don't really know if they check it at all. Someone said he sent it unlocked and they disn't even notice.
Just be sure that the 5 second screen doesn't show up when you turn it on. Should be enough

Choose an username... said:
We don't really know if they check it at all. Someone said he sent it unlocked and they disn't even notice.
Just be sure that the 5 second screen doesn't show up when you turn it on. Should be enough
Click to expand...
Click to collapse
Update: My device was accepted by RMA and I have just received a replacement. Success!

Downgrading from B35

Hi all,
I have A2007U running B35 all stock and locked bootloader.
I'm having problems with MiFlash so I'm trying to find another solution.
Is there a way to downgrade using Sdcard and stock recovery?

you should able to downgrade to B32 with edl tool following this post
https://forum.xda-developers.com/axon-7/development/axon-7-edl-tool-flash-backup-restore-t3750759

vic_singh said:
Hi all,
I have A2007U running B35 all stock and locked bootloader.
I'm having problems with MiFlash so I'm trying to find another solution.
Is there a way to downgrade using Sdcard and stock recovery?
Click to expand...
Click to collapse
You can downgrade without a PC. you need to find the official B32 update package, unzip it (there should be an update.zip inside the zip that you downloaded), and put that update.zip on the SD card. Then go to Settings, Updates, and install the B32. It will downgrade the system no problem.

Any reason to roll back from the 35?

Skv012a said:
Any reason to roll back from the 35?
Click to expand...
Click to collapse
I'm having tons of issues with unlocking bootloader. I used the tool but I was only able to unlock fastboot. I can't even install twrp.

Choose an username... said:
You can downgrade without a PC. you need to find the official B32 update package, unzip it (there should be an update.zip inside the zip that you downloaded), and put that update.zip on the SD card. Then go to Settings, Updates, and install the B32. It will downgrade the system no problem.
Click to expand...
Click to collapse
any clue where i can find the image from?

vic_singh said:
any clue where i can find the image from?
Click to expand...
Click to collapse
Well nope. It was on the US servers but they got shut down. Maybe @raystef66 knows?

Choose an username... said:
Well nope. It was on the US servers but they got shut down. Maybe @raystef66 knows?
Click to expand...
Click to collapse
looks like its still there
https://www.zteusa.com/axon-7

At fastboot, you need run a command "fastboot oem unlock", then you should be able to access twrp.
Your twrp is probably already flashed, just can not be access as you have not run the command "fastboot oem unlock".
vic_singh said:
I'm having tons of issues with unlocking bootloader. I used the tool but I was only able to unlock fastboot. I can't even install twrp.
Click to expand...
Click to collapse