How to Update Stock Android 12.1 in ONEPLUS 3 AND 3T(Lineage OS 19.1) Custom Rom Install and Review

Tutorial About Install Pure Stock Android 12.1Easter egg Lineage OS 19.1Custom rom for ONEPLUS 3 AND 3T,Android 11to 12 Update,Oreo to 12, Pure Stock Stable Android 12.1for ONEPLUS 3 AND 3T, stable volte pure stock rom, oreo to Android 12.1update ,installation with twrp recovery
What Is Lineage OS?
Lineage OS is based on the Android Open Source Project with extra contributions from many people within the Android community. It can be used without any need to have any Google application installed. Linked below is a package that has come from another Android project that restores the Google parts.
How to Install Lineage OS 19.1on ONEPLUS 3 AND 3T
Before we list the instructions, there are a few points worth discussing. We would like to state that the ROM is an unofficial build and in the alpha stage. So you could face a few stability issues as well as bugs. On that note, here are all the working features and the bugs present in this ROM:
So if you are ready to install Lineage OS 19.1 onto your ONEPLUS 3 AND 3T(sagit) device, then here is all the required information. Let’s start with the requirements set.
PRE-REQUISITE:
Step 1: First and foremost, create a complete device backup. This is because we will be wiping the data partition which will format your device.
Step 2: Next up, you will need to unlock the bootloader on your device. If you haven’t done so, then refer to our guide on How to Unlock Bootloader on ONEPLUS 3 AND 3T.
Step3: Once that is done, you also need to have the TWRP Recovery installed. You could refer to our guide on How to Install TWRP Recovery on ONEPLUS 3 AND 3T.
Step4: 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
Step5: Next, up, download and install the Android SDK Platform Tool on your PC. This will provide you with the necessary binary files.
Step6: Also, download and install the Xiaomi USB Drivers onto your PC
Step7: Finally, download the Lineage OS 19.1 on ONEPLUS 3 AND 3T: Download Link Below
Step8: If you want Google Apps as well, then download the Android 12.1GApps Download Below
That’s it. You may now proceed with the installation steps.
Instructions to Install Lineage OS 18 on ONEPLUS 3 AND 3T

1: Transfer the downloaded ROM and the GApps file to the Internal Storage of your device.
2: Now connect it to the PC via USB Cable. Make sure USB Debugging is enabled.
3: 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.
4: Execute the below command in the CMD window to boot your device to TWRP Recovery
5: Now that your device is booted to TWRP, head over to the Wipe section and tap on Advanced Wipe.
6: Then, select the System, Vendor, Data, and the Cache partition and perform a right swipe to format the selected partitions.
7: After this, go to the Install section of TWRP. Navigate to the downloaded Lineage OS 19.1 ZIP file, select it and perform a right swipe to install it
8: 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.
9: 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.
10: You may now reboot your device to the newly installed OS. For that, head over to Reboot and select System.
Download Descriptions Below:

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Track: Arc North - Symphony (feat. Donna Tella) [NCS10 Release]
Music provided by NoCopyrightSounds.

[xzoyfsp]

can i lock my bootloader after flashing?

[dharmikpanchal]

after installation Password mangata hai, what is the password?

[SergioLeitao-fjnh]

TF is this??!! You clearly inserted other phone´s video in op3 frame, and with miui

[munnahossain]

Screen power batton off, on no working

[Ashishkumar-kixm]

oneplus 3T hai ise update kaise Karun bataenge aap kuchh please