Recently, OnePlus released OxygenOS 3.5.4 update for OnePlus 3T. This is the second update for the device and still totally based on Marshmallow. Already OnePlus 3 receiving the Nougat update but now download OxygenOS 3.5.4 for OnePlus 3T. we will soon get the Nougat update for OnePlus 3T. OxygenOS 3.5.4 for OnePlus 3T is a latest update which rolls out in phase wise manner. The update is rolling out through OTA (over-the-air) and many users already receiving the update. Manually we can update Oneplus 3T to OxygenOS 3.5.4 or wait for the OTA updates. Now Download OxygenOS 3.5.4 for OnePlus 3T.

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The OxygenOS 3.5.4 ROM which you can flash on your device. OnePlus 3T OxygenOS 3.5.4 update optimize many apps, fix various bugs and growth system stability. Update your OnePlus to the latest version then Download OxygenOS 3.5.4 for OnePlus 3T.

OxygenOS 3.5.4 Features and Changelogs:

  • Optimizations for US-TMO Network
  • Optimizations to Reduce Lag when Battery is below 5%
  • Optimized Bluetooth Connectivity for Mazda Cars
  • Optimized Battery Saving Mode: GPS and Orientation possibilities will be restored when Battery Saving Mode is closed.
  • Fixed Flashlight Usability problem in WhatsApp
  • Increased device Stability
  • Implemented Various Bug Fixes

Note:

This method is only for the OnePlus 3T device. so, don’t try this on any other device.

It may format your data, so it is advisable to take a complete backup of your phone for safer side and then proceed.

Make sure that your phone has at least 50-60% charged to prevent the unexpected shutdown in-between the process.

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Download OxygenOS 3.5.4 for OnePlus 3T

 How to Install OxygenOS 3.5.4 ROM on OnePlus 3T

Enable ‘USB debugging’ option from setting>developer option>. To enable Developer Options, go to About phone and tap the Build Number 7 times.

Download ADB and fastboot driver for windows or ADB and Fastboot for Mac and install it on your PC.

Download the OxygenOS 3.5.4 for OnePlus 3T from above Copy ROM to a folder where adb installed.

Now Turn Off your phone and boot into recovery mode.

Choose Install from ADB Sideload

Now Connect your phone to Laptop/PC

On Marshmallow ROM folder press shift+right click and click on open command here.

On Marshmallow ROM folder press shift+right click and click on open command here.

adb devices

if your device is listed, you’re ready to flash the ROM

Flash the OxygenOS 3.5.4 on OnePlus 3T by typing below command

adb sideload File Name.zip

Now wait until the process complete and then Reboot the phone.

Done!

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Download OxygenOS 3.5.4 OTA zip file from above and save it on your phone internal memory.

Now Switch off your device and boot into the Recovery mode.

To boot OnePlus 3T into recovery mode press and hold ‘Power + Volume Down’ button.

Now your phone boot into the Stock recovery.

Now Select ‘Apply Update’ and select ‘Choose from Internal Storage‘

Now browse the OTA zip file which you download and save on your phone before.

Now select the zip file and it will Install OxygenOS 3.5.4 OTA update file on your OnePlus 3T.

Now wait until the process complete and then reboot your device.

Done.

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