How To

Download OxygenOS 3.5.7 For OnePlus 2 (Full ROM)

Even though they just released a new update recently, OnePlus announced another update for the OnePlus 2 recently! We’re talking about OxygenOS 3.5.7 for OnePlus 2, fixing the lost IMEI number. Basically, it’s the same as the previous, except it is released for the users who lost their IMEI during the downgrading process or reverting from HydrogenOS.

The manufacturer just started releasing the update, in a phase wise manner, but if you don’t want to wait and install OxygenOS 3.5.7 on OnePlus 2 manually, everything you need to do is follow the steps in our quick guide, presented below.


Before starting the whole process, please make sure you consider the following aspects, in order to avoid an unpleasant situation or even bricking your phone:


  • This method works just for the OnePlus 2, so don’t try it on another device.
  • The process will not erase the data on your phone, but our recommendation is to perform a full backup and then proceed, for the safer side.
  • Check your battery level. It has to be around 50-60%, at least, otherwise you risk dealing with an accidental shutdown, in-between process.
  • Please follow the steps below correctly and make sure you don’t skip any of them.


Download OxygenOS 3.5.7 For OnePlus 2


OxygenOS 3.5.7 Full ROM For OnePlus 2 –  Download



Install OxygenOS 3.5.7 On OnePlus 2


Method 1

Step 1: First of all, you need to enable USB Debugging. Go to Settings > About Phone and look for the Build number. Tap on it 7 times, in order to enable the Developer Options sub menu. Then, from Developer Options, enable USB Debugging.

Step 2: Download the ADB and Fastboot driver and install it on your PC. You can download the Windows version from here or the Mac version from here.

Step 3: Download  OxygenOS 3.5.7 for OnePlus 2 ROM.

Step 4: Copy the ROM in the same folder where you have ADB installed.

Step 5: Turn off your phone and boot it into Recovery Mode.

Step 6: Recovery Mode, choose Install from ADB Sideload/USB

Step 7: Connect your phone to your PC and, while in the same folder where you have the ROM installed, press Shift + Right click, in order to open a command.

Step 8: Type adb devices, in order to check your connection. If the phone is listed, you’re ready to flash the ROM.

Step 9: Type adb sideload File, in order to start flashing OxygenOS 3.5.7 for OnePlus 2.

Step 10: Wait for about 10 minutes, until the process is completed.

Step 11: Reboot your phone.


Method 2


Step 1: Download OxygenOS 3.5.7 .zip file and save it on your phone’s internal storage.

Step 2: Press and hold Volume Down + Power Button, in order to boot the phone into Recovery Mode.

Step 3: If you prefer a clean install, wipe all the data and cache. Otherwise, you can skip this step.

Step 4: While in Recovery mode, select your language and then, select Install from Local.

Step 5: Select the .zip file and click on Install, in order to begin the installation process. Wait for about 10 minutes, until the process is completed.

Step 6: Reboot your phone.


And you’re all done! You have successfully installed OxygenOS 3.5.7 on OnePlus 2. If you have any questions, please contact us, using the comments section below.

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