How to Install Custom ROM on Samsung Galaxy J8

In this tutorial, we will guide you to install the custom ROM on Samsung Galaxy J8 (SM-J810F, J810G). The device came out of the box with Android 8.0 Oreo and was later upgraded to Android 10.0. If you want a vanilla-flavored custom ROM, then you can try the GSI build on your phone.

Well, If you are here, then you may pIn this tutorial, we will guide you to install the custom ROM on Samsung Galaxy J8 (SM-J810F, J810G). The device came out of the box with Android 8.0 Oreo and later received Android 10. If you want a vanilla-flavored custom ROM, then you can try the GSI build on your phone. As you read our title, yes we can guide you on installing the latest custom ROM on Samsung Galaxy J8 based on GSI build.

When you buy a new phone, it comes with so-called stock ROM or stock firmware which basically means a pre-installed operating system. This ROM usually comes with some limited functionality defined by the OEM (phone manufacturer). Whereas a custom ROM is developed by using AOSP also known as Android Open Source Project. Yes, we all know that Android is open-source and therefore any developer can edit the code, or recompile it according to his or her need. You can read our complete article to understand the difference between Custom ROM and Stock ROM.

How to Install Custom ROM on Samsung Galaxy J8

To install, as we said, you need to unlock the bootloader and must have a TWRP (to install via a device) or a PC (to install via Fastboot). Yes, there are two methods to install the custom ROM GSI on Samsung Galaxy J8 (SM-J810F, J810G).

Disclaimer

AOSP 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 on the same thread related to the ROM.

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.

Pre-Requirements:

This guide is for Samsung Galaxy J8 (SM-J810F, J810G).
You will require to unlock the device bootloader at first
ARM, ARM64, or x86: Check your Android Phone’s Processor
Treble Support: Check If Your Smartphone Supports Project Treble
Download the required file and Support the 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.
Download and install Samsung USB Drivers
For adb method: Download ADB and Fastboot tool
For TWRP Method: Download and Install TWRP Recovery on Samsung Galaxy J8

Note:

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

Download Links:

Download AOSP Android 12 GSI

Unofficial Android 12 Build

ROM	Thread/Download	Partition Style	Architecture
LeOS-S	XDA / Download	A/B	arm64 – binder
Pixel Experience	XDA / Download	A/B	arm64 – binder
LineageOS	XDA / Download	A/B	arm64 – binder
ProtonAOSP	Download	A/B	arm64 – binder
OctaviOS	Telegram/Download	A/B	arm64 – binder
ArrowOS	Telegram/Download	A/B	arm64 – binder
CherishOS	Telegram/Download	A/B	arm64 – binder
SuperiorOS	Telegram/Download	A/B	arm64 – binder
BlissRom	XDA	A/B	arm64 – binder

Install via TWRP Recovery:

This guide is for those users who have installed TWRP recovery on your device. If your device is not supported, you can try the next method to install the custom ROM via GSI build.

To install via TWRP, you need to factory reset your device using TWRP
Go into the Wipe option and Swipe to Factory Reset.
Transfer the GSI build to your Samsung Galaxy J8 using a USB Cable.
Once you have moved, you can remove your USB cable.
In your TWRP, tap on the install button –> Change type to Install Image and find the GSI you have moved in the 3rd step.
Confirm the flash by choosing the system partition
Once it is done, you can reboot your device and wait for a few minutes to boot up.

Flash via Fastboot

First, do the factory reset on Samsung Galaxy J8. There are two methods to do it, follow anyone.
- Factory Reset When Powered On: To install without TWRP, you have to factory reset using your Umdigi A7 Pro factory reset option.
- Factory Reset via Stock Recovery: Reboot your Samsung Galaxy J8 into stock recovery using a button combination or ADB command.
```
adb reboot recovery
```
- In your Stock Recovery, navigate using the Volume UP and DOWN button.
Make sure to extract the downloaded GSI build.
After resetting the factory ROM, you can now boot your device into bootloader mode using the adb command adb reboot bootloader.
Now open the extracted folder of GSI build, there, now open the command prompt window by holding the SHIFT KEY and Right Mouse click.
In your command window, enter the command fastboot erase system
To flash the system image, enter a command in the following format: fastboot -u flash system name_of_system.img
Wait for the image to flash, it could take a few minutes. Once it has been completed, reboot your device either manually via power key or by entering fastboot reboot and wait for a few minutes to boot up.

We hope that this guide is helpful to you and you have successfully installed the Custom ROM on your Samsung Galaxy J8 handset easily. If in case anything goes wrong or if you have any queries, feel free to ask in the comments below.

Credits to all the developers from the XDA forum and 4PDA forum

How to Install Custom ROM on Samsung Galaxy J8

What is GSI Stands for?

How to Install Custom ROM on Samsung Galaxy J8

Pre-Requirements:

Download Links:

Install via TWRP Recovery:

Flash via Fastboot

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