How to Flash Android 15 Custom ROMs on OnePlus 11

Sadique Hassan•Updated Mar 10, 2025

The fifteenth iteration of the OS build has brought in a slew of noteworthy features to the fore. Some of the noteworthy ones include 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. And guess what? You can now welcome all these goodies on your device right away! Given here are the steps to download, install, and flash numerous Android 15 based Custom ROMs on your OnePlus 11.

Table of Contents

How to Flash Android 15 ROMs on OnePlus 11

Flash Android 15 ROM on OnePlus 11

Before starting, make sure to 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 throughout this guide.

install adb platform tools windows

STEP 2: Enable USB Debugging and OEM Unlocking

Next up, you will 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 process.

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

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 OnePlus 11 [Video]

STEP 4: Download Android 15 Custom ROMs

You may now get hold of the desired ROM from below:

WATCHDOGS: ROM | Firmware Flasher
CRDROID [Vanilla Build]: ROM | RECOVERY | PARTITION FILES
LINEAGEOS: ROM | PARTITION FILES | MIND THE GAPPS
LIBREOS: ROM | PARTITION FILES
NAMELESS AOSP: ROM | super_empty.img|recovery.img | vendor_boot.img | init_boot.img | boot.img

GAPPS: ANDROID 15

The ROM will be present in ZIP whereas the rest of the files will be in IMG.
Make sure to transfer all these files to the platform-tools folder on your PC.
Likewise, rename the custom ROM to rom.zip and the GApps to gapps.zip.

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.
After that, 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.

How to Flash Nameless AOSP Android 15 on OnePlus 11

First off, wipe the super partition via the below command:
```
fastboot wipe-super super_empty.img
```
Then flash the partition IMG files via the below commands:

fastboot flash recovery recovery.img
fastboot flash vendor_boot vendor_boot.img
fastboot flash init_boot init_boot.img
fastboot flash boot boot.img

Now reboot your device to the newly flashed recovery via:
```
fastboot reboot recovery
```
Once done, go to Factory Reset > Format Data / Factory Reset.
Now go to Apply Update > Apply from ADB to start the sideload.
Then type in the below command to start the ROM installation:
```
adb sideload rom.zip
```
Now, to flash any other ZIP files, then first do a reboot to recovery.
Once done, head to Factory Reset > Format Data / Factory Reset.
Finally, select Reboot System Now to boot to the newly flashed OS.

How to Flash LibreOS on OnePlus 11

LibreOS is an AOSP based ROM which tries to distance itself as much from Google as possible, aka a de-Googled ROM [though it is yet to achieve this in its entirety]. It beholds a slew of features across numerous domains, including the UI, UX, and security aspects. Some of its most noteworthy features include the likes of:

Desktop Mode, App Lock, Game Space, microG support, Parallel Space, Glide keyboard, Sounds UX, Hotspot Manager, and Neo Wellbeing.
Numerous design tweaks [Personalization with Full Control over Fonts, Colors and UI customizations and Redesigned AOSP apps],
Various gesture elements [Three Finger Swipe to screenshot, Pocket Mode, Ambient Display, LockScreen Shortcuts and more],
Tons of Security features [Scrambled PIN input, Custom Pattern size, USB Port Control, Enforced SELinux, DNS and Connectivity Check Servers, Global VPN on all users, Background Data switch, App Hide, Panic Trigger and more].

Now that you are aware of the features, let’s list out the steps to install the LibreOS ROM on your OnePlus 11.

First off, flash the partition IMG files via the below commands:

fastboot flash boot boot.img
fastboot flash dtbo dtbo.img
fastboot flash vbmeta vbmeta.img
fastboot flash vendor_boot vendor_boot.img
fastboot flash recovery recovery.img

Now reboot your device to the newly flashed recovery:
```
fastboot reboot recovery
```
Once done, go to Factory Reset > Format Data / Factory Reset.
Now go to Apply Update > Apply from ADB to start the sideload.
Then type in the below command to start the ROM installation:
```
adb sideload rom.zip
```
Now, to flash any other ZIP files, then first do a reboot to recovery.
Finally, select Reboot System Now to boot to the newly flashed OS.

How to Flash LineageOS Android 15 on OnePlus 11

First off, make sure you are on the latest Android 15 firmware.

Then flash the partition IMG files using the below commands:

fastboot flash boot boot.img
fastboot flash dtbo dtbo.img
fastboot flash vbmeta vbmeta.img
fastboot flash vendor_boot vendor_boot.img
fastboot flash recovery recovery.img

Now reboot your device to the newly flashed recovery:
```
fastboot reboot recovery
```
Once done, go to Factory Reset > Format Data / Factory Reset.
Now go to Apply Update > Apply from ADB to start the sideload.
Then type in the below command to start the ROM installation:
```
adb sideload rom.zip
```
Now, to flash any other ZIP files, then first do a reboot to recovery.
Finally, select Reboot System Now to boot to the newly flashed OS.

How to Install crDroid ROM Android 15 on OnePlus 11

To begin with, make sure you are on the latest Android 14 OxygenOS 14 build.

Then flash the below files to their respective partitions via the below commands:

fastboot flash boot boot.img
fastboot flash dtbo dtbo.img
fastboot flash vbmeta vbmeta.img
fastboot flash vendor_boot vendor_boot.img
fastboot flash recovery recovery.img

Now reboot your device to the recovery via the below command
```
fastboot reboot recovery
```
Then go to Factory Reset > Format Data/Factory Reset to do a reset.
Now go to “Apply Update” > “Apply from ADB”. Then type in the below command to start the sideload
```
adb -d sideload rom.zip
```
Once flashing is done, you’ll be greeted with a prompt. If you want to flash any other ZIP file, then tap YES and do a sideload of the required ZIP file. [You’ll be greeted with the Signature verification failed message, it is normal. Just hit Yes].
On the other hand, if you do not want to sideload any other ZIP file, then tap on No.
Once everything is done, hit Reboot System Now to boot to the newly flashed OS.

How to Install WatchDogs ROM Android 15 on OnePlus 11

To begin with, extract the firmware flasher to any location on your PC.
Then open the update-firmware.bat file to start flashing the firmware.
Once done, your device will boot to the AOSP recovery.
If that doesn’t happen, then use the below command:
```
fastboot reboot recovery
```
Now go to Factory Reset > Format Data/Factory Reset > Format Data.
Your device will undergo a reset. Once done, go to Apply Update > Apply from ADB.
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 below command to flash the ROM:
```
adb sideload rom.zip
```
The process will now begin and once done, you shall get the Total xfer: 1.00x message.
You’ll now get a prompt on your device, if you wish to sideload any other ZIP file, hit YES- your device will reboot to recovery and you may flash the required file.
On the other hand, if you don’t want to flash any other ZIP file, then hit NO- your device will reboot to Recovery.
From the Recovery, it is recommended to do a Factory Reset once again.
Finally, select Reboot System. Your OnePlus 11 will boot to the WatchDogs Android 15 ROM.

That’s it. These were the steps to flash numerous Android 15 ROMs on your OnePlus 11. 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.

Tags:

Custom ROMsOnePlus 11