LineageOS 15 Custom ROM is now available for the OnePlus 2. The available LineageOS 15 ROM is in alpha stage, but it has got the mainstream features working. You can find the Phone, Mobile Data and the SMS messages working all well in this ROM. WiFi and Bluetooth also seem to be working good. Hotspot, FP, VoLTE, Sensors, and GPS are also working. The only things crashing for now include video recording for now. 
OnePlus 2’s last update was the Android 6.0.1 Marshmallow. The device couldn’t taste Android Nougat, and it won’t get the Android Oreo update either. OnePlus 2 was released back in the year 2015. This device sported 5.5-inch full HD display. OnePlus powered this phone with a Qualcomm Snapdragon 810 GPU and Adreno 430 GPU. OnePlus 2 was also among the devices which come with a heavy spec-sheet and an affordable price tag. Since OnePlus 2 won’t be getting any further update of the Android OS, the only option you can go with to power up your phone with the brand new Android OS is by means of a custom ROM.
If you don’t already know about LineageOS, it’s important to know that it’s the same old CyanogenMod custom ROM. Since CM shut down, it was renamed to LineageOS and its development has taken new swings since then. LineageOS 15 is based on the Android Oreo firmware. It’s the most widely distributed aftermarket version of Android Oreo at the moment.
If you have had an experience of flashing custom ROMs on your OnePlus 2 in the past, you will definitely want to upgrade it to the new LineageOS 15 as well. It’s very easy to update your OnePlus 2 to Android Oreo with the new LineageOS 15. The following guide will take you through a step-by-step process to update OnePlus 2 to Android Oreo Lineage OS 15 Custom ROM.
Preparation
- This ROM is only for the OnePlus 2. Do not try this on any other phone.
- Charge your phone good enough so that it lasts during the installation process.
- Backup your important contacts, call logs and text messages. Also, create a Nandroid and EFS backup. This is highly recommended because we will be factory resetting the phone during the flashing process.
- Install TWRP Recovery on your OnePlus 2: How To Install TWRP Recovery and Root OnePlus 2
- Get an external SD card or a USB OTG to make the installation easy for yourself.
- Follow this guide carefully.
Note: This is a custom ROM and the process that leads to the execution of this ROM on your OP3/2 is also custom. Such procedure are not recommended by the device manufacturers. If something goes wrong, TechBeasts or the ROM developer or the device manufacturers may not be held responsible. Make sure that you understand all the risks involved and you are doing this at your own risk.
Update OnePlus 2 to Android Oreo LineageOS 15 Custom ROM
- Download lineage-15.0-20170908-UNOFFICIAL-oneplus2.zip file. Copy the downloaded ROM file to your phone’s external SD card or the USB OTG.
- Download Gapps Micro ARM64 for Android 8.0 Oreo and copy them to the external storage as well.
- Boot your OnePlus 2 into TWRP recovery. To do so, power down your OnePlus 2. Now turn it on by pressing and holding Volume Down + Power Key. As soon as the phone boots up, leave the keys and let it boot into TWRP.
- Once you are in the TWRP recovery, tap Wipe > Advanced Wipe > Select all partitions except internal storage > Repair or change file system > EXT4. Change the file system one by one if you are unable to change them altogether.
- Now get back to the main menu in TWRP recovery and tap Install > Locate and select lineage-15.0-20170908-UNOFFICIAL-oneplus2.zip > Swipe screen to flash.
- After flashing the ROM, get back to the main menu in TWRP and similarly, flash the Gapps file.
- Once done, reboot your phone into the system.
- First boot can take up to 10 minutes. Let the phone prepare the new system. You will have the new Freedom OS ROM up and running on your phone now. That’s all.
To root the phone, you can download the latest SuperSU.zip file and flash it just as you flashed the ROM and Gapps.zip files.
