[Zuk Z1 Original Android Development] Breadcrust:
[IMG="Title"]http://i.imgur.com/J8QA6jF.png[/IMG]

Confirmed working with:​

Exodus for ZUK Z1 5.1.1.​

MOKEE CM Nightly 5.1.1.​

Cyanogen OS OTAs thanks to @EagleEyedTom​

DO NOT USE ON AN ENCRYPTED FILE SYSTEM

For some reason I can't get my image to decrypt encrypted file systems. I lost all my data to this issue and at the moment I do not know of a fix. If you need to update or modify and encrypted partition you will have to back up EVERYTHING in your data partition and then do a complete wipe. Sorry.​

This image has been recompiled with device checking disabled thank you to [MENTION=5986135]TheCrazyLex[/MENTION] for making the new .prop for the international variant.

Please note this image was compiled for the chinese variant of the ZUK Z1 it should work with the international version but zip flashing might not work properly due to device IDs. To flash zips with device specific build.props comment out all the device checks

There is a known issue with this where it will fill the log with "E: A render request has failed". I do not believe this stops the recovery from working and I will be looking into the issue. If you notice any bugs please report them below.

[IMG="Title 2"]http://i.imgur.com/pEnkFRC.png[/IMG]

Q: Does this work for ZUI devices? A: No, I don't think so. You're welcome to test it and report back but so far I have only tested it with Cyanogen OS

Q: What can I get with this I can't with Cyanogen OS Recovery? A: You can flash unsigned ZIPs such as SuperSU or Xposed (Although I don't recommend doing this as I put my phone into a bootloop installing Xposed)

[IMG="Title 3"]http://i.imgur.com/KxuMxCz.png[/IMG]

First off you are going to need ADB and Fastboot, these can be aquired by downloading THIS for your OS, you do not need Android Studio you only need SDK tools. Once installed open Android SDK Manager and download platform-tools. You can untick everything else.

Now here is the tricky part, the part I had issues with. If you have a ZUI device you can install the ShenQi USB driver which is located on a partition of your phone which should mount as a CD when connected via USB, if you're running Cyanogen OS and your phone isn't mounted properly in Device Manager (Windows) then you can use the Google USB Driver ZIP, if it will not let you. Say for example if returns an error claiming the best driver is already installed. Then open the spoiler below if not continue on.

If Windows is giving you an error claiming the best driver is already installed right click Z1 or whatever it is named in Device Manager and click Update Driver.

Then click "Browse my computer for driver software" then click "Have disk" once you have done this browse to the extracted USB driver and open the .inf file it will show you three options select ADB device (Top one). Click yes to any warning and it should be mounted!

Next step is to check your device is mounted for ADB, open CMD and CD to the platform-tools folder in your Android SDK directory. Then type

adb devices

It will start the ADB Deamon and it should show your phone. If not, then it's probably because you haven't enabled ADB in Android, do this by going into Settings>About Phone and spam pressing build number until it says you are a developer. Then go back and in Developer Options enable ADB, you should get an RSA Authentication prompt on your phone. Click yes and type.

adb devices

You will also need to download the TWRP image from the spoiler below.

[IMG="Title 4"]http://i.imgur.com/encFqj0.png[/IMG]

DON'T DOWNLOAD THESE IMAGES FROM ANYWHERE OTHER THAN ANDROID FILE HOST FROM ME WITH MATCHING MD5 SUMS. I AM AWARE SOMEONE HAS RE-UPLOADED MY IMAGES

Android File Host for Z1 TWRP V2.1 - DOWNLOAD LINK

Android File Host MD5 for Z1 TWRP V2.1 - d5fa8f50144316647b35af4a92a61ab9 - Has all currently reported bugs fixed!

Android File Host for Z1 TWRP V2.0 - DOWNLOAD LINK

Android File Host MD5 for V2.0 = 6226173f5cb17bc7b4ab67ac55efdbbb - Now uses Chroma Kernel to run, reduces heat output, fixes audio bug issues, fixes battery drain, and fixes brightness inside TWRP. Added new splash screen.

Android File Host for Z1 TWRP V1.3 - DOWNLOAD LINK

Android File Host MD5 for V1.3 = eaf29b2653a53d120146d1cedcb1e372p - Added support for both ZUK Z1 variants, international and Chinese.

Android File Host for Z1 TWRP V1.2 - DOWNLOAD LINK

Android File Host MD5 for V1.2 = 3b6fa140737b769f838169e997f58975 - Retired due to limited device compatability

Android File Host for Z1 TWRP V1.1 - DOWNLOAD LINK

Android File Host MD5 for V1.1 = 596816b87a45d78bed4063ac62fac137 - Compiling issue, uploaded without thorough test.

Android File Host for Z1 TWRP V1.0 - DOWNLOAD LINK

Android File Host MD5 for V1.0 = 62b72d5129591d6759bb1917868594f4 - Outdated, filled with bugs.

If you have all the files downloaded and your phone has appeared in ADB then you are ready to flash!

[IMG="Title 5"]http://i.imgur.com/sZ9AX6y.png[/IMG]

Type:

adb reboot bootloader

You phone should reboot and boot into bootloader mode. Now because the ZUK Z1 isn't recognised as a fastboot device you will have to specify the OEM id. It is 0x2b4c meaning any fastboot command MUST be suffixed with

-i 0x2b4c

.

Next you need to check if the bootloader is unlocked, if you followed the "Convert Z1 from ZukUI to Cyanogen OS" guide HERE then it should already be unlocked.

To check type:

fastboot -i 0x2b4c oem get-device-info

If it returns:

Then you are ready to begin the flashing process.

Move the downloaded file to your platform tools folder and type:

fastboot -i 0x2b4c flash recovery z1.twrp.2.8.7.0.By.Breadcrust-UPDATE1.img

If fastboot returns "OKAY" then you can reboot your phone! To get into recovery and begin flashing ZIPs turn off your phone and then turn it back on. When it vibrates press and hold both Volume Up AND Volume Down until it boots into TWRP.

Special thanks to Anas Khan who made these awesome titles!

XDA:DevDB Information

Un-Official Breadcrust's TWRP 2.8.7.0 Recovery for ZUK Z1, ROM for the Lenovo Zuk Z1

Contributors

Breadcrust, TheCrazyLex

ROM OS Version: 5.1.x Lollipop

ROM Firmware Required: ZUK Z1

Based On: TWRP

Version Information

Status: Stable

Current Stable Version: 2.0

Stable Release Date: 2015-11-09

Created 2015-11-11

Last Updated 2016-01-17