Now, you may ask what is GSI? A GSI (generic system image) is a system image with minimal configurations for Android devices. It works as a pure Android implementation without any modifications or changes to the Android Open Source Project (AOSP) code. It can be run on any Android devices running Android 8.1 or higher version due to the Project Treble support. Here we have shared a step-by-step guide below.

But before going to the installation steps, let’s have a look at the device overview and then Android 10 overview as well.
HTC U12 Plus Specifications
Talking about the specifications, HTC U12 Plus features a 6-inch Super LCD6 display with a screen resolution of 2880 x 1440 Pixels. It is powered by Qualcomm Snapdragon 845 SDM845, 64-bit Processor coupled with 6GB of RAM. The phone packs 64/128GB internal memory with expandable storage support of 256GB via microSD card. The camera on the HTC U12 Plus comes with a Dual 12MP + 16MP rear camera with dual-LED dual-tone flash and 8MP + 8MP front camera for selfies. It is backed by a Non-Removable 3,500 mAh Lithium-Polymer Battery. HTC U12 Plus also has a fingerprint sensor on he back.
Android 10: Overview and Features
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.
You can additionally check out the top 10 Android 10 features & details here.
Steps to Install AOSP Android 10 GSI for HTC U12 Plus (ime)
Warning!
We’re at GetDroidTips 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.
First, you have to unlock the device bootloader in order to flash any Custom ROM. But going to the process. let’s take a look at requirements and download links first.
Pre-Requirements:
- You need to unlock the bootloader at first.
- Download the required Android 10 GSI ROM file and Android 10 GApps file from below.
- Keep your device battery charged up to 60% at least for a smoother process.
- Take a complete backup of your device data without Root. In case anything goes wrong, you can easily restore all the data.
Watch The Video on What’s New on Android 10
Video Guide for AOSP Android 10 Installation
Instructions to Install:
Guide to Install Generic System Image (GSI) on Your Android Device
We hope that this guide is helpful to you and you have successfully installed the AOSP Android 10 ROM on your HTC U12 Plus (ime) handset easily. If in case anything goes wrong or if you have any queries, feel free to ask in the comments below.
Source: Github| Credits to phhusson
Conclusion
If you find any problem with the latest build of Android 10 GSI, then you can report it on the official GitHub page:
Click Here