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Install Flyme OS 6 custom ROM on the OnePlus 3T

If the stock UI that runs on your OnePlus 3T isn’t exactly on your taste, if you want to add new features and settings within the Android core system or if you just want to try something different in term of functionality and appearance, I recommend you to test the new official port of Flyme OS 6. So, as it should be obvious, during this dedicated tutorial you can learn how to replace the stock firmware from the OnePlus 3T with this Meizu based skin.

This is a custom ROM developed by third party devs – in that respect you should thank those of xda-developers as they managed to port and compile the Flyme OS 6 on the OnePlus 3T. However, this ROM is not based on the latest Android version but on Android 6.0.1 Marshmallow OS. Thus, if prefer to use the newest Android build, then you shouldn’t complete this step by step guide.

But, if you want to try something new and also better, then I recommend you to resume all the lines from this tutorial. The Flyme OS 6 for OnePlus 3T is stable and smooth. Also, with the help of this custom ROM you can now improve the general performance of your phone as the ROM is coming with various features, apps and capabilities which aren’t included in the stock Android software. Overall, with the Flyme OS 6 custom ROM installed your OnePlus 3T should run better and faster while you will be able to customize and optimize everything else.

And the best is that you can test this new Android M port without risking anything else. A Nandroid backup should be first performed as afterwards you will be able to use the resulted Nandroid package for going back to stock without having any other problem – in a few words, if the new ROM will not run as expected you can choose to return back to stock Android OS (the Nandroid backup will therefore save the Android system that is currently powering your OnePlus 3T).

As already outlined the Flyme OS 6 is a custom ROM, so this update is not coming from OnePlus. Therefore, the ROM cannot be OTA received which means that a manual update procedure will be now implied. Also, it means that this update operation is not supported by your OEM, so you are going to complete an unofficial procedure. Thus, the warranty of your smartphone might get void while you take care of the steps from down below.

Aditionally, there are a few pre-requisites that must be considered before doing anything else: your OnePlus 3T must run on an unlocked bootloader and TWRP recovery must be installed on your phone. Do note that flashing a custom ROM firmware isn’t possible in any other conditions. Also, be aware as for installing TWRP recovery root access might be required – don’t worry, all these operations are being explained here on Android.gs (just check our how to sectin in that respect).

As you will see, during the flashing process a hard reset must be applied – the new ROM can run only if the system is firstly cleared up. Of course, your personal data, info, accounts and files along with everything else that’s not there from day one will be removed. Shortly, a backup is recommended in this case. Through a general backup you can easily secure both personal and system files including contacts, call logs, texts, images, videos, audio files, market apps, internet settings, calendar info, saved passwords, the IMEI / NVRAM data and who knows what else.

Since we are discussing about a manual update operation, for being able to install Flyme OS 6 on OnePlus 3T a computer must be used. Your phone and its USB cord will be also required and on your smartphone the USB Debugging option must be checked – you can find this field under “menu – > settings – > developer options”. In case Developer Options is not displayed on your phone, go and tap repeatedly on Built Number until the ‘you are a developer’ prompt is showed up.

A charge is implied too, if the power that’s left on your OnePlus 3T is currently lower than 50% – if there isn’t enough power ensured your smartphone might get turned off during the Flyme OS 6 update procedure. Unforntunately, if that occurs, you might end up in soft bricking your device – different issues might cause malfunctions within the Android core system.

How to Install Flyme OS 6 custom ROM on the OnePlus 3T

  1. Start by downloading the firmware package on your computer; in order to do so, access this page.
  2. Save this file on desktop if that’s possible.
  3. Switch off your smartphone and wait while the power off is completed. Then, reboot recovery mode on your OnePlus 3T.
  4. From recovery make a wipe in order to erase everything; just select “wipe data factory reset”, “wipe cache partition” and “wipe dalvik cache”.
  5. Next, power on your phone in Android mode and connect it with your computer with the help of the USB cable.
  6. Transfer the downloaded update package from desktop to your smartphone and when done remove the USB cord.
  7. Once more, reboot recovery mode on your Android device.
  8. This time, from recovery tap on Install and load the Flyme OS 6 custom ROM.
  9. Swipe in order to begin the flashing process and when done, from main menu of recovery select “reboot system now”.
  10. Done.

That’s perfect. The Flyme OS 6 based on Android 6.0.1 Marshmallow OS is now running and can be booted up on your OnePlus 3T. Start testing all the new features and settings and don’t forget to tell everything about your custom ROM experience by using the comments field from below. If you are still having problems in completing the steps from above don’t hesitate and share all the issues with our team – we will try to assist you as soon as possible.

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