In this guide, we will show you the steps to install the latest OxygenOS 15 build based on Android 15 onto your OnePlus 8T. The eighth iteration of the device from OnePlus was launched with OxygenOS 11 out of the box and has since received its fair share of 3 OS upgrades. At the time of writing, it is running its last OS build aka OxygenOS 14 which is on Android 14. This translates to the fact that users are missing on quite a lot of new goodies.
To be more specific, the likes of Partial Screen Sharing, Notification Cooldown, Lockscreen widgets, Battery Health percentage, App Archive, revamped Bluetooth menu, Private Space, the ability to save App Pair, and Privacy Sandbox are just some of the intriguing goodies that they are missing out. or is that really the case? Well, thanks to its impressive performance in custom development, you can flash a slew of AOSP-based ROMs on this device.
But that would mean ditching the stock oxygenOS ecosystem in favor of the Pixel UI, which is something that many are not a fan of. So what else can be done? Well, there exists an impressive OxygenOS 15 port for your OnePlus 8T that will allow you to welcome the latest Android 15 onto your device. And in this guide, we will show you how to do just that. So without any further ado, let’s get started.
Table of Contents
How to Install Android 15 OxygenOS 15 on OnePlus 8T
The below process will wipe off all the data from your device, so take a complete device backup beforehand. Droidwin and its members wouldn’t be held responsible in case of a thermonuclear war, your alarm doesn’t wake you up, or if anything happens to your device and data by performing the below steps.
STEP 1: Install Android SDK
First and foremost, you will have to install the Android SDK Platform Tools on your PC. This is the official ADB and Fastboot binary provided by Google and is the only recommended one. So download it and then extract it to any convenient location on your PC. Doing so will give you the platform-tools folder, which will be used in this guide to install OxygenOS 15 Android 15 on your OnePlus 8T.
STEP 2: Enable USB Debugging and OEM Unlocking
Next up, you will also have to enable USB Debugging and OEM Unlocking on your device. The former will make your device recognizable by the PC in ADB mode. This will then allow you to boot your device to Fastboot Mode. On the other hand, OEM Unlocking is required to carry out the bootloader unlocking.
So head over to Settings > About Phone > Tap on Build Number 7 times > Go back to Settings > System > Advanced > Developer Options > Enable USB Debugging and OEM Unlocking.
STEP 3: Unlock Bootloader on OnePlus 8T
Next up, you will also have to unlock the device’s bootloader. Do keep in mind that doing so will wipe off all the data from your device and could nullify its warranty as well. So if that’s all well and good, then please refer to our detailed guide on How to Unlock Bootloader on any OnePlus Device.
STEP 4: Download Android 15 for OnePlus 8T
- You may now grab hold of the ROM file from the below link:
OnePlus 8T OxygenOS 15 Android 15 Port: DOWNLOAD LINK
- Rename the file to rom.zip and transfer it to the platform-tools folder.
STEP 5: Boot to Fastboot Mode
- Connect your device to the PC via a USB cable. Make sure USB Debugging is enabled.
- Then head over to the platform-tools folder, type in CMD in the address bar, and hit Enter. This will launch the Command Prompt.
- Type in the following command in the CMD window to boot your device to Fastboot Mode
adb reboot bootloader
- To verify the Fastboot connection, type in the below command and you should get back the device ID.
fastboot devices
- If you are not getting any serial ID, then please install the Fastboot Drivers on your PC.
STEP 6: Install OrangeFox Recovery
Next up, you’ll now have to install the OrangeFox recovery onto your device. For that, you may refer to our guide on How to Flash OrangeFox Recovery on the OnePlus 8/Pro/8T/9R.
STEP 7: Install OxygenOS 15 Android 15 on OnePlus 8T
- First off, boot your device to OrangeFox Recovery via the below command:
fastboot reboot recovery
- Then go to Format Data/Factory Reset and perform a reset.
- Once done, go to ADB Sideload to sideload the file.
- Then open CMD and type in the below command:
adb sideload rom.zip
- The installation will now start and could take a while.
- Once done, select Reboot > System. Your device will now boot to the newly flashed OS.
That’s it. These were the steps to flash the latest OxygenOS 15 based on Android 15 on OnePlus 8T. If you have any queries concerning the aforementioned steps, do let us know in the comments. We will get back to you with a solution as soon as possible.
