[HOWTO] Flash a Stock ZUI ROM (ZUK Z2 Pro Z2121 only!)

MikeS · Jul 9, 2016

Flash guide ZUK Z2 Pro （Z2121）internal SD-Card:

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This tutorial is for all editions of ZUK Z2 Pro (Z2121).
USB flashing will wipe your internal phone storage!
SD-Card flashing won't be wiping anything, but exeptions confirm the rule!

Flash at your own risk, and alway follow the flashing tutorial.

Please note this tutorial is different than ZUK Z2 (non Pro) flashing tutorial!

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---This method only works, if your phone is able to boot---

Note:

Code:

Usually no data will be wiped. But to be save do a backup first.

##############A T T E N T I O N##############

DO NOT TRY TO FLASH VIA THIS METHOD, IF YOUR PHONE HAS A CUSTOM FIRMWARE *¹ !
If you try this nevertheless you phone will be bricked!

#########################################

Information

If your phone has a official ROM/Firmware installed but it is rooted etc. it will work without bricks.

Beginning

1.0 Download Firmware/ROM (Download latest!)

Code:

###REQUIRED###
https://www.androidfilehost.com/?w=files&flid=94052

1.0.1 Extract the .7z file with ROM/Firmware you downloaded at 1.0

1.0.2 Connect the phone via USB-C cable to your computer and create a folder called "sdfuse" at the root of your internal storage.

1.0.3 Copy all the exctracted .qsp files into the sdfuse folder.

1.0.4 Shutdown the phone.

1.0.5 Hold down the volume- button and power on the phone. At second vibration release the power button, but still hold the volume- button. Now the developer recovery menue should be shown.

1.0.6 Select "Sd update" and confirm with power button.

1.0.7 Hit "apply" or "OK" with tapping on it. Now the flashing procedure will start immediatly. After this was successful hit the reboot button and you're done.

*¹ You flashed a Custom ROM via TWRP means Custom Firmware / Custom ROM. Furthermore if your merchant flashed a ROM with multilanguage support (more than English and Chinese) and it's unable to gain OTA update (non rooted - if you don't know what this is you are not rooted!) your device running on a Custom Firmware!

###################

FAQ:

I switched the FAQ section to post #5

http://zukfans.eu/community/threads/howto-flash-a-stock-zui-rom-zuk-z2-pro-z2121-only.57/#post-679

###################

MikeS · Jul 9, 2016

Flash guide ZUK Z2 Pro - （Z2121）(QPST/QFIL):

-------------
Preamble:

This upgrade your Phone to Z2 Pro_CN_OPEN_USER_Q01002.1_M_ZUI_1.9.038_ST_160503 version, for example. Use the latest version of the software or the version for the actual operation.

Backup your data before processing the flash, in order to avoid loss of data!

-------------

###################

This tutorial is for all editions of ZUK Z2 Pro (Z2121).
USB flashing will wipe your internal phone storage!
Flash at your own risk, and alway follow the flashing turtorial.

Please note this tutorial is different than ZUK Z2 (non Pro) flashing tutorial!

###################

--You'll need a USB-C data-cable to proceed--

###################

Theoretical it is possible to recover a bricked Qualcomm Phone, just like ZUK Z2 Pro via this method. If you do this for the first time you'll need to download some tools.

With downloading and installing the tools this procedure will take about 10-30 minutes (differs depending on how powerful your computer is)

Without downloading and installing the tools this procedure will take about 5 minutes.

###################

Let's get startet!

1.0 Download flashtool and ZUK USB driver

Code:

Download Flashtool
###REQUIRED### (QPST 2.7.434)
https://www.androidfilehost.com/?fid=24591000424948456


Download USB Drivers
###REQUIRED### (ZUK)
https://www.androidfilehost.com/?fid=24659325368664618

optional (Qualcomm normally installed by QPST flashtool setup)
https://www.androidfilehost.com/?fid=24591020540824824

Download and extract ADB and fastboot

Code:

###REQUIRED###
https://www.androidfilehost.com/?fid=24671318762848778

**Attention**

Click to expand...

Download Stock ROM (Please latest!)

Code:

###REQUIRED###
https://www.androidfilehost.com/?w=files&flid=94059

1.0.1 Unzip the downloaded package

1.0.2 Install QPST.2.7.434.msi

Note: If this screen appears when you double-click on the upgrade tool, you need to download and install the Microsoft .NET Framework 4, you can directly search for and download dotNetFx40_Full_x86.rar

###################

To prevent any further trouble, please reboot your computer now!

###################

1.1.1 Click "QFIL" open the upgrade tool; (path: Start Menu - All Programs - QPST - QFIL)

1.1.2 If you opend QFIL swich to the FireHoseConfiguration and enter the following settings:

After saving the settings, restart QFIL.

1.1.3 Click "Load Content" button, and navigate to the folder you extracted the ROM you downloaded and navigate to the folder with the contents.xml located in, select the contents.xml and click open. This should be looking like this:

The QFIL tool will automaticly load all needed files.

1.1.4 If your phone isn't bricked(Method 1):
Plug in your phone via USB-C cable to your Computer. After this you need to enable developer options. Navigate to Settings - About - ZUI Version and touch it 7 times to enable developer options. After this was successfully navigate to Settings - Advanved Settings - Developer Options - USB debugging and turn it on. Confirm dialog with OK.
Now you only have to navigate to the ADB and fastboot files you extracted and open a command prompt (press and hold "shift" rightclick - select "open command promt windows here")
Type into it: adb reboot edl

---If it fails, turn on "enable_usb_2.0" via Developer Options---

If your phone is bricked (Method 2):
(Turn off your phone.) After it's fully shutdown, press and hold the volume down button and connect your phone to your PC.

Now the QFIL tool should react with the following:

1.1.5 Press the Download Content button to proceed the flashing.

1.1.6 If the flashing procedure was successful, this will be promped

THAT'S IT

1.2.1 Flash finished boot test
After the software upgrade is complete, you should do some test, to confirm whether the software download was successful. Test steps are as follows:

1.2.2. start testing:
After the upgrade the phone should be able to boot.

1.2.3 query software version:
Enter * # * # 5993 # * # * to view the phone software version, phone software version for the software version of the new download.

1.2.4 query the phone number and the IMEI number:
Enter * # * # 2222 # * # * # * 06 # and check the serial number and IMEI number, and backing this time should be consistent.

Last, but not least do OTA updates if available.

###################

FAQ:

I switched the FAQ section to post #5

http://zukfans.eu/community/threads/howto-flash-a-stock-zui-rom-zuk-z2-pro-z2121-only.57/#post-679

###################

Sources:

Original Thread and source: http://club.lenovo.com.cn/thread-1811698-1-1.html

ROM Source: http://club.lenovo.com.cn/thread-1812430-1-1.html

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MarkH-ZUK · Jul 10, 2016

Awesome work and guide dude... thank you for the contribution. Would you like to be a moderator for this section?

hAMMERlized · Jul 10, 2016

there is a little typo. under "flash method" step 2 you are writing about the Z1, at step 3 it's the Zuk Z2 Pro. What is it now?

And ist this compatible to both devices? pro and non pro version of zuk?

MikeS · Jul 10, 2016

###################

FAQ:

Q: Is it possible to install via SD-Card update even if my bootloader is unlocked and my phone is rooted?
A: Yes, see video to convince yourself:

Detailed description for accessing Developer Mode (SDupdate):
Maybe this will help you: http://zukfans.eu/community/threads/howto-flash-a-stock-zui-rom-zuk-z2-pro-z2121-only.57/page-6#post-6160

(THX again schupfer !)

Q: It is'nd possible to get OTA updates alway got promting "No internet connection" how to fix this?
A: If you 1st try to delete data and cache from "Sys Upd" and reboot your phone, try again. If this will not solve this problem try to connect via Chinese VPN-Server. Head over to this thread: http://zukfans.eu/community/threads/ota-update-solution-for-noobs-like-me.192/
Thank you Donát Szabó for your support!

Q: How to install Google Play Store?
A: Download and install the APKs in this package: https://www.androidfilehost.com/?fid=24671318762848780

Q: I'm having trouble to get Google Play Store working, Error: "Can't download app.. XYZ can't be downloaded. Try again, and if the proble continues, get help toubleshooting. (Error retrieving information from server. [DF-DLA-15])
A: 1st update Google Play Store via "apkmirror.com". If the problem still occurs:
1. delete your Google Account from your mobile phone(Sync Data first!)
2. delete data and cache from Google Play Services and Google Play store (APP)
3. reboot your phone
4. singn in to your Google Account and try again to intall APPs from Google Play Store APP.

Q: How to get Google Contacts sync woking?
A: Download and install the APKs in this package: https://www.androidfilehost.com/?fid=24671318762848780

Q: I got this message: "Fail to load contents.xml: Invaild Path for Meta Build CONTENT XML, ignored: C:\...\...\contents.xml" how do I fix this?
A: Maybe the folder names are to long (NTFS ~200 caracters), rename the folder with the contents.xml located in to "abc" for example.

Q: I need a password to extract the archive.
A: Try "club.lenovo.com.cn" or "bbs.lenovomobile.cn" without the potation marks.

Q: I can press the Download-Button ... but the download failed with error:
"Download Fail:Sahara Fail: QSahara Server Fail: The name of directory is invalid
Finish download"
A: Try to close and reopen QFIL again, also unplug and replug your phone.
Still not fixed? Reboot your PC, Phone.

Q: While flashing process I got error: "Download Fail: Sahara Fail:QSaharaServer Fail: Process Fail". How to fix this?
A: You need to copy the ROM files into a short named folder and filename on the root of a harddrive.

Q: I still have issues with QFIL/QPST: "Download Fail: Sahara Fail:QSaharaServer Fail: Process Fail". Any solution?
A: Try this short tutorial: http://zukfans.eu/community/threads/howto-flash-a-stock-zui-rom-zuk-z2-pro-z2121-only.57/page-8#post-7282
(Thanks syedtahir16)

Q: How to relock the bootloader, if I unlocked it?
A: You only need to open a command promt and fastboot.exe. Type "fastboot oem lock" into that command promt while the phone has to be in fastboot mode.

Q: Were to get into fastboot mode?
A: Open a command promt and type in "adb reboot-bootloader". In return your phone has to be connected via USB and "USB debugging" must be enabled.

Q: How do I change the language from Chines to English?
A: Click this video, this will show you how to:

Q: How can I start into TWRP?
A: Try to download this TWRP: https://www.androidfilehost.com/?fid=24591000424960393
Reboot into Fastboot Mode and run this command: fastboot -i 0x2b4c boot recovery.img

Q: Is there a secret menu, where I can test there components?
A: Yes, try *#*#1111#*#*

Q: I'm unable to access the developer recovery where I'm flashing the Sdupdate. Is there a detailed manual?
A: Take a look here: http://zukfans.eu/community/index.php?posts/6160
(Thanks to Schupfer)

###################

Explanation ROM version ST - DEV:

ZUI from version 1.5, the version will be divided into stable version (ST) and early adopters Edition (DEV), respectively, for different types of users.

ST (stable version):
Update longer period (two weeks prior to a half months), a slight adjustment depending on the software test case, the high stability of the system, the user is more suitable for the pursuit of stability of the system.

DEV (developer edition):
Faster version of the update frequency (Developer Edition in the past month have weekly updates, follow-up will make adjustments according to the situation, but because of differences in quality and version control push range). Developer Edition can experience the latest features, optimize and repair, will also have some problems large and small. Brush with some more suitable capacity, and early adopters like playing machine users.

Stable version and the development version will use a separate upgrade strategy, you can switch to each other through the brush method.

MikeS · Jul 10, 2016

hAMMERlized said:

Sorry for that, I am working on both Guides.

I don't know until now if this will work for the Z2 Pro as well. I need to collect more information about this thematic.

But I will post the results of the inquiry asap.

***EDIT***

I changed the links to androidfilehost.com.

***EDIT2***

Z2 and Z2 Pro have different flashing methods!

aljthab · Jul 20, 2016

i cant found the port how to get it it always no port available

Tek · Jul 20, 2016

Have you installed all the necessary drivers?
You can find them here: http://bbs.zuk.cn/z2/t114579/ (use Google Translate if you don‘t speak Chinese ;-) )

MikeS · Jul 20, 2016

Tek said:

USB Drivers available to download now on https://www.androidfilehost.com/?fid=24591020540824821

and Qualcomm USB driver needed maybe for the QPST tool https://www.androidfilehost.com/?fid=24591020540824824 normally the Qualcomm drivers will be installed by the QPST setup tool.

MikeS · Jul 20, 2016

aljthab said:

Is it possible to boot the phone into the mode mensioned a Step 1.2.4 ?

aljthab · Jul 20, 2016

m_atze said:

no i can't because its a message came when i unlock the boot-loader

apaf · Jul 20, 2016

If you using adb there is simple way to get to qualcomm port:
adb reboot edl

Nathan Struzycki · Jul 21, 2016

Also its worth checking driver signature enforcement in BIOS at computer startup. The drivers Lenovo uses are unsigned and on systems windows 8 and above they will be prevented from running unless this option is disabled. This was the issue I was encountering when attempting to flash my device.

Please see link below for further detail;

http://www.drivethelife.com/windows...e-enforcement-on-windows-10-8-7-xp-vista.html

Once driver signature enforcement was disabled port 9008 was available.

MikeS · Jul 21, 2016

Nathan Struzycki said:

Also its worth checking driver signature enforcement in BIOS at computer startup. The drivers Lenovo uses are unsigned and on systems windows 8 and above they will be prevented from running unless this option is disabled. This was the issue I was encountering when attempting to flash my device.

Please see link below for further detail;

http://www.drivethelife.com/windows...e-enforcement-on-windows-10-8-7-xp-vista.html

Once driver signature enforcement was disabled port 9008 was available.

Thank you. I added this to the tutorial.

Kristian Hru. · Jul 28, 2016

Hi guys, maybe will be my question weird, but will be possible to make translation to another languages from this ROM? If someone experienced try to extract the ROM...?

Mumbo · Aug 6, 2016

Hi guys,

When doing step 1.2.4, I get the following port instead:

Would it be okay to continue anyway?

apaf · Aug 6, 2016

Yes, it should switch when you press download.

Mumbo · Aug 6, 2016

Qfile says: "Download fail: Sahara Fail:QSaharaServer Fail - Folder name invalid"

Do you have any idea what I'm doing wrong?

apaf · Aug 7, 2016

You probably have spaces or other special chars in path name.

MikeS · Aug 7, 2016

Bad the same Problem.

Mumbo said:

I had the same problem. I successfuly flashed the latest ROM. Maybe you cannot downgrade a ROM.

And you have to shorten your folder names!

[HOWTO] Flash a Stock ZUI ROM (ZUK Z2 Pro Z2121 only!)

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