[Lenovo Zuk Z2 Pro Guides, News, & Discussion] weimerd:
Hi mates,

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for the ones who only search for OTA update packages and don't need instructions see here: https://androidfilehost.com/?w=files&flid=251521

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Finally you made it: Messed up your phone or want to make sure your phone is set back to ZUI original.

That's what I did as well several times while flashing and testing around several roms.

To avoid problems with Lenovo OTA servers I made up this thread to safely update to latest ZUI using OTA updates without needing them to download from Lenovo OTA server.

First step: Flashing ZUI 1.9 with QFIL.

Download Qpst/Qfil 2.7.472 here: https://www.androidfilehost.com/?fid=962187416754462223 and install it.

Download ZUI 1.9.104 here: https://androidfilehost.com/?fid=962187416754462214

Extract ZUI 1.9.104 to C:\ZUK\ and flash it with QFIL. See here for more detailed instructions: https://xdaforums.com/zuk-z2-pro/how-to/howto-flash-stock-zui-rom-zuk-z2-pro-t3928699

Second step: Flashing full OTA update to 3.5.259ST with System Updater.

You successfully booted ZUI 1.9. To see it from Chinese into English follow instruction here: https://www.youtube.com/watch?v=jFM_a3-wYD8

Download Full Update ZUI 3.5.259ST: https://androidfilehost.com/?fid=890129502657584731

Connect your phone to computer.

Rename the downloaded zip file to "update.zip" and copy it to internal storage root directory of your phone.

Start System Updater App, tap on the three dots on upper right corner and choose reboot to recovery.

Your phone will now reboot to recovery asking you if it shall update the package. Accept it and let it be installed.

After installing your phone will boot up again and your ZUI version will be upgraded from 1.9 to 3.5.259.

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OTA update packages to download (just in case anyone needs):

OTA ZUI 1.9.104ST to ZUI 2.3.044ST: https://androidfilehost.com/?fid=818070582850494210

OTA ZUI 2.3.044ST to ZUI 2.5.335ST: https://androidfilehost.com/?fid=890129502657584732

OTA ZUI 2.5.335ST to ZUI 2.5.462ST: https://androidfilehost.com/?fid=673956719939821298

OTA ZUI 2.5.462ST to ZUI 3.1.194ST: https://androidfilehost.com/?fid=962187416754462127

OTA ZUI 3.1.194ST to ZUI 3.5.259ST: https://androidfilehost.com/?fid=890129502657584731

OTA ZUI 3.5.259ST to ZUI 3.5.300ST: https://androidfilehost.com/?fid=818070582850498755

OTA ZUI 3.5.259ST to ZUI 3.5.316ST: https://androidfilehost.com/?fid=673956719939830555

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Congratulations, your system is up to date now.

You want to unlock bootloader now and get twrp? Go on here: https://xdaforums.com/zuk-z2-pro/how-to/howto-unlock-bootloader-twrp-zuk-z2-pro-t3928705

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I will update this post with new OTA packages once they are out.

Enjoy mates :)

PS: Yes, I know: latest ZUI 3.5.259ST update is a full package and not the real OTA update as this is not released yet. Anyhow it works in the same way and will not clean your system or anything. It will simply work as an update.

--> I added this here as zukfans eu may close soon and I want to avoid instructions get lost.