How To Sideload Official Android 5.0 Lollipop ROM on Oneplus One

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The Oneplus One has definitely been one of the most celebrated devices of recent times and without any doubt, all this fame rides on the device being in good terms with software updates and developer support. Although there have already been Android 5.0 ports for the device and they’re as old as to be termed ancient now; something which comes with the “Official” tag seems to be much sweeter and favored at the same time.


So here we are, and now we’re gonna help you through the process of manually updating your Oneplus One with the Official ROM by sideloading it onto your device by following some simple steps as given below.

Before we move on, you gotta make sure you’re done with all the pre-requisites like backing up all your data and have developer options activated on your phone.

In case you don’t, tap a few times on the Build Number in the “About Phone” section under the settings menu. A toast message will notify you that you’re a developer now but take that with a pinch of salt, you’ve only unlocked the Developer options menu on your phone.

Again, turn on the “Advanced Reboot Menu” from Developer Options. This gives you an option to boot into recovery right away straight from the Reboot menu.

Also, make sure that you have sufficient amount of charge in your phone to keep you going as the flashing process can be a bit sticky at times!

Now, you’ll have to download the Official ROM file from this link before we move on further.

Done with all that, let us quickly move through the flashing process.

  1. Rename the file which you downloaded above to “” and place it in the root folder of your phone’s memory. This is essential as the stock recovery is restricted to support only one particular file.
  2. Now from the “Advanced Reboot Menu”, Boot into the recovery mode. Note that in the recovery mode, you can navigate using the volume rocker and confirm using the power button.
  3. Select “apply update” and subsequently, “apply update from internal storage”. Now you gotta make sure that you select the same file that you put into the phone’s root folder in step #1.
  4. Proceed to flash and once it gets done with that, Reboot from the recovery menu.

That should probably do it only in case you’re using everything stock. If you’re not, then you’ll have to flash the entire system partition manually and then go for the update.

If you faced any issues or came across any difficulties during the process, let us know in the comments section. We’ll be more than happy to help!


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