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Update OnePlus 3 to Android 8.0 Oreo via OxygenOS Open Beta 25 firmware

As you might already know, OnePlus offers the Android 8.0 Oreo update for the OnePlus 3 and OnePlus 3T ahead of the official release. This roll out is available and will be pushed out gradually for the users who registered to the OnePlus Open Beta Program. Anyway, if you just can’t wait or if you want to install the software manually, don’t hesitate and follow the guidelines from below. There I will teach you how to update the OnePlus 3 to Android 8.0 Oreo by flashing the OxygenOS Open Beta 25 firmware.

OxygenOS Open Beta 25 is the official Android 8.0 Oreo update released by OnePlus for the OnePlus 3. However, since we are talking about an Open Beta Program, the ROM is not yet fully stable. The company tries to get a proper feedback from users in order to address all possible software errors before the actual worldwide roll out. Anyway, according to those who have already installed the beta Oreo OS, you have few reasons to worry about. Overall, the firmware is stable enough for a daily use and you won’t experience major issues while testing the Oreo system.

For now, it seems that the fingerprint is slower than what you are used to, shortcut to access Google Photos isn’t available, NFC and Bluetooth are not fully stable and some compatibility problems with third party apps are still happening. Other than that, the Android 8.0 Oreo firmware should run smoothly on your OnePlus 3.

Anyway, in order to avoid any further unpleasant situations, before updating to OxygenOS Open Beta 25 firmware you should complete a Nandroid backup. Afterwards you can use the Nandroid package for going back to stock, if the new Oreo system is not as you expected. And, of course, a general backup operation should also be applied as your personal data, info, accounts and files might get corrupted or even wiped out during the update process. Bottom line, secure everything before going any further as this is the only way in which you can protect your OnePlus 3 and your own files.

This is going to be an official update process. You won’t lose your OnePlus 3 warranty by completing the steps from below and you won’t have to use complex or risky programs during the same operation.

Also, the steps from below should work even if your OnePlus 3 is currently rooted, installed with a custom recovery image or running on an unlocked bootloader. But, since you will be using the official Android 8.0 Oreo ROM, in the end the root access might be revoked as well as the other remaining tweaking procedures.

Now, flashing OxygenOS Open Beta 25 firmware is a manual update operation compatible only with the OnePlus 3. For being able to successfully resume the flashing process you will first have to check and apply the pre requisites from below.

  • A computer is required; your smartphone and its USB cable must be there too.
  • On your phone gain Developer rights: go to About Phone and tap repeatedly on Built Number until you receive the ‘you are a developer’ message.
  • Next, on your phone access Developer Options (from “menu – > settings”); from there check the USB Debugging feature.
  • On your computer install the Android SDK and fastboot toolkit: learn how to install Android SDK on Windows or learn how to set up ADB on MAC OS X / Linux.
  • Moreover, on your PC install the OnePlus 3 drivers as otherwise you might have problems while trying to connect your handset with your computer.
  • And charge your device before starting the Android 8.0 Oreo update operation. If the power is too low (lower than 50%) your smartphone can get turned off while you try to complete the steps from below.
  • If a sudden shut down occurs, the Android system might get soft bricked; so ensure the charging process if that’s required.
  • Install OxygenOS Open Beta 25 firmware only if you own the OnePlus 3; also, try not to mess things up and stick to the guidelines from this dedicated tutorial.

How to Update OnePlus 3 to Android 8.0 Oreo via OxygenOS Open Beta 25 firmware

  1. Start by downloading the required Android 8.0 Oreo package for your OnePlus 3; you can get this package from this page.
  2. Save the file on desktop and afterwards rename it into ‘update.zip’.
  3. Now, transfer the renamed file inside the ADB installation folder.
  4. Power off your phone and wait a few moments; afterwards reboot recovery mode on your OnePlus 3.
  5. From recovery select Install from USB and then choose OK.
  6. Now, connect your device with your computer; use the USB cable in that respect.
  7. Go to the ADB installation folder and open a cmd window: press and hold the Shift keyboard key while right clicking on any blank space and pick “open command prompt window here”.
  8. In this cmd window you then have to enter: adb sideload update.zip.
  9. That’s all; remove the USB cable in the end and reboot your smartphone.

Perfect; now the Android 8.0 Oreo firmware can be booted on your OnePlus 3. So, test the OxygenOS Open Beta 25 firmware in order to see how everything works. If you find issues or software related problems don’t hesitate and share everything with us and also with the devs. Hopefully the fully stable Oreo OTA will be embracing your smartphone during the following months. Enjoy and use the comments field from below for sharing your update experience with us.

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