Nubia Z20 was launched in the year 2019 with Android 9.0 Pie out of the box. If you are looking for a new custom ROM for the device, then you are in the right place. Today, we will guide on how to install Lineage OS 17.1 on Nubia Z20 based on Android 10 GSI. Well, after the Android 8.1 update, most of the devices that came out officially supports the GSI. 

Well, GSI stands for Generic System image which is an unmodified Android Open Source Project (AOSP) code, runnable on a variety of Android devices that has treble support. If you are using the Nubia Z20, then you can follow this guide to install the Lineage OS 17.1 on your device. As we already said, this build is based on Android 10, which is Google’s 10th version of Android OS with plenty of new features and system UI changes.

Thanks to the XDA Recognized Contributor AndyYan for sharing this Lineage OS 17.1 on XDA Forum. To install this, you need to unlock your device bootloader and you can use either ADB fastboot method or TWRP Method (if available).

.What’s on Android 10?

This year (2019) Google has released the latest version of Android called Android 10. As the name suggests, it’s the 10th iteration of Android OS and offers the most stable & secure user experience than the previous generation Android 9 Pie. Android 10 brings plenty of new features and system improvements like improved gestures navigation, enhanced privacy & location control, improved app permissions, etc. It also includes a system-wide dark mode, live caption, focus mode, foldable display support, 5G connectivity compatible, chats bubble, smart reply, improved security updates, family link, better notifications, and more.

Lineage OS 17.1: Android 10 Build
Lineage OS is an open-source and free operating system that is based on the Android platform. It is the successor to the custom MOD, the CyanogenMod, which shut down its operation in December 2016. However, Cyanogen. Inc retained the rights to the custom MOD and gave a rebranding to it as Lineage OS.
Well, LineageOS 17 will be based on the latest Android 10 and it comes with all the Android 10 features and Lineage customization options which allows users to be more advanced. Now you can enjoy Lineage OS 17.1 on Nokia 9 PureView by flashing this custom ROM.

Disclaimer:
“LineageOS 17 GSI build is based on PHH’s AOSP Android 10 GSIs which is still marked as a pre-release. Even on a device that runs Pie GSIs nicely, it’s still possible to get broken media, camera, RIL or even flat-out no-boot. You are strongly advised to try PHH’s original and then identify/report issues there, before moving onto other GSIs that are based on his work. Please report bugs here only if it’s specific to this GSI.
We’re at TheUgradeGuide won’t be responsible for any kind of damage or error that occurs to your handset while or after following this guide. This is a Custom ROM and may contain some of the bugs or stability issues. We can’t recommend you to use this firmware as your daily driver. Proceed at your own risk.”

Important Notes!
This ROM will only work on this device, Don’t try this on any other device.
Follow the steps correctly otherwise you may brick your device.
We are not responsible for any damage to your phone.
It will erase all your data, so we advise you first to take a complete backup of your phone and then proceed.
Ensure that your phone has at least 50-60% charged to prevent the accidental shutdown in-between the process.

Requirements!
You must have TWRP Recovery Installed on your device.
(Learn here: How to install)
ARM, ARM64, or x86: Check your Processor’s Architecture
Treble Support: Check If Your Smartphone Supports Project Treble

Note!
A only arm32 – arm avN
A only arm64 – arm64 avN
A/B arm64 – arm64 bvN
A/B arm32 – arm bvN

XDA Development Forum: From Here!
(You can check here more information about ROM what is working and what’s not working, or ask some questions)

▼DOWNLOAD FILES▼
ANDROID 10 GSI ROM

GAPPS DOWNLOAD
Check-out which G-App is compatible for your device from Here!

Instructions to Install

1. First Download & Install a Custom Recovery on your device (TWRP is recommended) If you already have installed then skip this step.

2. Download GSI ROM file and save it on your device’s Internal storage or SD Card.

3. Now Boot your device into TWRP Recovery Mode. (if you don’t know how to boot your device into twrp recovery then you can search it on Google)

4. Now in TWRP create a Nandroid Backup of your device for safer side. If anything goes wrong, you can restore back to your older ROM. (How to Take Nandroid Backup)

5. Now do a Factory Reset of your device, Goto Wipe > Advanced Wipe > Select Cache, Dalvik Cache, System, and Data. Then Swipe to Wipe.

6. Now go back to TWRP Main Menu by pressing the Center navigation button.

7. Now Select Install, Locate the GSI ROM  file and Swipe to Confirm Flash.

8. After ROM flashing completes, Select Wipe cache/dalvik from the bottom left side of the screen, & Swipe to Wipe.

9. After wipe completes, Click on Reboot System.

That’s it Now you have successfully installed the latest Android on your device, first boot will take some time so please don’t panic!

If you have any questions regarding the ROM or the installation process, use the comments section below to reach us or contact to XDA forum members from the link above.