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How to Update OnePlus 3 A3000 to Android 7.1.1 Nougat LineageOS 14.1 Unofficial ROM

oneplus 3Dear OnePlus 3 A3 A3000 Smartphone users! Today I have a good news for you. Wanna know what? Now you can flash the advanced Android 7.1.1 Nougat LineageOS 14.1 Unofficial ROM on your OnePlus 3 A3 A3000 Smartphone. If you are an user of the OnePlus 3 A3 A3000 Smartphone and want to flash this new Custom ROM to your handset, then what to wait for? Get started with the following manual update method. This new ROM will bring a number of changes to your device that will enhance your user experience! Credit for this wonderful custom ROM goes to Dev dianlujitao.

But before initiating the update process, you need to root your OnePlus 3 A3 and install new CWM/TWRP Recovery on it. Now let’s take a look on the pre-requirements below.

NB: Remember, the update is fully your responsibility. We shall not be responsible if your Smartphone undergoes any issue due to the update.


  • OnePlus 3 A3 A3000 Smartphone
  • Windows PC
  • Original USB Cable
  • Backup all your personal data such as SMS, MMS, videos, contacts, call logs, APN numbers, applications and other files since those might be erased post update.
  • Install the device drivers to your OnePlus 3 A3 A3000 so that you can easily connect it to your PC.
  • Deactivate the antivirus or any other security protection if you have on your PC and handset for the time since that might create issues in the installation process.
  • Ensure that your device has at least 60% power back up before you initiate the installation process to avoid any sort of inconvenience during the installation.
  • Enable the USB debugging option in your Smartphone. To do so go to the Settings>Developer options. Also forget not to disable USB Debugging post update.


Steps to Update

  • First of all download the above mentioned files and then connect your Smartphone to your PC via USB. Then move both the files to the SD card in your device.
  • Then you have to put your Smartphone into recovery mode.
  • In that mode select “wipe data/factory reset”, “wipe cache partition” and “wipe dalvick cache” options from recovery mode menu to wipe data and clear cache from your device.
  • Next you have to flash the .zip file on your OnePlus 3 A3 A3000. To do so click on the option Install zip from SD card and then select the .zip file that you moved to your storage in step 1. Then click Install and follow the screen instructions to flash the firmware in your device.
  • Follow the same procedure to install Gapps next.
  • Wait till the update finishes. Once finished, return to the main menu and click “Reboot System Now”. Your Smartphone will be rebooted into normal mode once the update is finished.

Congrats!! You have successfully flashed the Android 7.1.1 Nougat LineageOS ROM on your OnePlus 3 A3 A3000 Smartphone. If you face any issues in the installation process, then me ping back in the comment section. I shall find out a solution for you.

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