Download and Install LineageOS 18.1 on OnePlus 7 Pro (Android 11)
OnePlus 7 Pro (codename: guacamole) launched in May 2019. The smartphone came out of the box with Android 9.0 Pie. In this tutorial, we will show you how to...
Mohammed Huwais
Last updated on August 22, 2025
Mohammed Huwais
Author
I started my career as a blogger in 2014 and also worked on an Android niche platform to gain extra income. I cover the topic on How to guides, software updates, Custom ROM updates and also product review. I'm 24 years old, completed MBA (Master of Business Administration) from Sikkim Manipal University.
OnePlus 7 Pro (codename: guacamole) launched in May 2019. The smartphone came out of the box with Android 9.0 Pie. In this tutorial, we will show you how to download and install Lineage OS 18.1 on OnePlus 7 Pro (guacamole) device. The Google-owned OS is open source in nature. This allows the userbase to try out tons of customizations and modifications onto your devices. For the starters, they could install themes, icon packs, and launchers from the Play Store. But this is just the beginning. There are a plethora of other tweaks that you could try out on your device.
All that is required is an unlocked bootloader, and then you could easily set your feet in the custom development. From installing a custom recovery like TWRP to gaining root access via Magisk, the possibilities are endless. Along the same lines, you could also try out a customized Android OS in the form of custom ROMs. And in this guide, we will be discussing just that. Today, we will show you the steps to install Lineage OS 18.1 onto your OnePlus 7 Pro (guacamole) device.
The device comes with a 6.7-inches Fluid AMOLED Quad HD+ curved display with no notch. It has a screen resolution of 3120×1440 pixels of 516PPI along with a 90Hz refresh rate. The handset is powered by the latest flagship Qualcomm Snapdragon 855 SoC paired with Adreno 640 GPU. It comes in three variants of 6GB RAM+128GB storage, 8GB RAM+256GB storage, and 12GB RAM+256GB storage options. In terms of the camera department, it has a single 16MP of pop-up selfie camera with AI modes like HDR, PDAF, AI Portrait, AI Beautify mode. The primary 48MP (f/1.6) Sony IMX586 sensor + 16MP (f/2.2) Ultra-Wide sensor of a 117-degree view + an 8MP telephoto (f/2.4) lens which supports OIS with 3x optical zoom. Additionally, the rear camera has an LED flashlight with HDR, AI Portrait, Night Sight Mode, PDAF, EIS, OIS, Scene Recognition, etc.
Lineage OS 18.1 with Android 11 Features
Among all the custom ROMs available for our device, Lineage has been among the oldest player. In its early days, it was known as CyanogenMod and now this ‘lineage’ seems to have been rightly carried forward. Based on the Android Open Source Project, you will be able to welcome a few handy customization options to your device. The ROM isn’t known to offer a plethora of features, rather it maintains an equilibrium with the stability front.
As far as the latest LineageOS 18.1 is concerned, it is based on the latest Android 11 that has just been released. This in turn translates to the user getting blessed with some noteworthy features. These include a separate Conversation section, OneTime Permissions, and the new Notification History. Likewise, there has been the introduction of Chat Bubbles and a native Screen Recorder. The Media Player has now also been moved to the Quick Settings with some handy Media Controls options.
Refer to our detailed instructions on how to install lineage OS 18.1 onto the OnePlus 7 Pro.
Warning
Before we begin with this procedure, I would strongly recommend you to create a backup of your device storage and all your files stored on your device. Moreover, it is advised to follow the steps mentioned in this post very carefully to avoid permanent damage or to brick your device. If anything goes wrong the author or GetDroidTips is not responsible for it.
So if you are ready to install LineageOS 18.1 onto your OnePlus 7 Pro (guacamole) device, then here is all the required information. Let’s start with the requirements set.
Prerequisites
First and foremost, create a complete device backup. This is because we will be wiping the data partition which will format your device.
Also, enable USB Debugging on your device so that it gets recognized by your PC in the ADB Mode. For that, head over to Settings > About Phone > Tap on Build Number 7 times > Go back to Settings > System > Advanced > Developer Options > Enable USB Debugging.
Next, up, download and install the Android SDK Platform Tool on your PC. This will provide you with the necessary binary files.
Finally, download the Lineage OS 18.1 on OnePlus 7 Pro: Download Link
If you want Google Apps as well, then download the Android 11 GApps file
That’s it. You may now proceed with the installation steps.
Instructions to Install Lineage OS 18.1 on OnePlus 7 Pro
Transfer the downloaded ROM and the GApps file to the Internal Storage of your device.
Now connect it to the PC via USB Cable. Make sure USB Debugging is enabled.
Head over to the platform-tools folder on your PC, type in CMD in the address, and hit Enter. This will launch the Command Prompt window.
Execute the below command in the CMD window to boot your device to TWRP Recovery
adb reboot recovery
TWRP Home
Now that your device is booted to TWRP, head over to the Wipe section and tap on Advanced Wipe.
Then, select the System, Vendor, Data, and the Cache partition and perform a right swipe to format the selected partitions.
After this, go to the Install section of TWRP. Navigate to the downloaded LineageOS 18.1 ZIP file, select it and perform a right swipe to install it.
The process might take a few minutes. When the flashing is complete, go back to the Install section and this time select the GApps package. Perform a right swipe to install this file as well.
Likewise, you should also wipe the cache partition. You could either use the Wipe Cache button that would be available after flashing GApps. If not, then head over to Wipe, select the Cache partition and perform a right swipe to wipe it.
You may now reboot your device to the newly installed OS. For that, head over to Reboot and select System.
With this, we conclude the guide on how to install Lineage OS 18.1 on OnePlus 7 Pro (guacamole) device. Do let us know your views about this ROM in the comments section below. Furthermore, you could also drop in your queries in the comments. Rounding off, here are some iPhone Tips and Tricks, PC tips and tricks, and Android Tips and Trick that deserve your attention as well.
