OnePlus One Phablet with CyanogenMod 11S Android KitKat OS, 3GB RAM Unveiled
OnePlus One Phablet with CyanogenMod 11S Android KitKat OS, 3GB RAMOnePlus

It's been a little over two weeks since Google officially began rolling out v6.0 Android OS update to Nexus series device.

Even rivals HTC, Motorola, Sony, and Huawei have confirmed that they will release the firmware soon. But there is no official word from the company on when the update will be made available to the popular flagship smartphone OnePlus One.

However, an industrious XDA Developer Forum senior member, who goes by the moniker 'updateing', has reportedly tweaked AOSP (Android Open Source Project) v6.0 Marshmallow, to make it compatible to the OnePlus One.

OnePlus One owners, who don't seem to be really patient, then can go ahead and flash the custom ROM to explore the all new features of Marshmallow. 

That being said, we would like to advise our readers to exercise caution as this home-made firmware has some bugs in it. The good news is that they are said to be benign and will not affect over-all functioning of the device.

Here are the few issues reported in AOSP v6.0 Marshmallow for OnePlus One:

  1. Stock camera does not work (users are advised to install either OppoCamera port or CameraNextMod)
  2. Battery drains... a little faster? (no serious issue)
  3. The ROM comes with one generation old Launcher-2 (Launcher3 will be added later version)
  4. Picture in apps are sometimes get automatically zoomed out (and distorted) and cannot be zoomed in. Is this a common problem among AOSP-based Marshmallow ROMs? I tried AOSP and CAF sources, and they both have the same issue
  5. Security related: SELinux is disabled. HW Crypto is not working. Software-based credentials storage
  6. No gestures (DT2W etc)

Prerequisites [Things to remember before installing Custom ROM]:

  • This new custom ROM has to be installed on OnePlus One aka Bacon models only; if tried on other devices, they might get bricked [To check your device model: Go to Settings >> About phone >> Model Number]
  • Make sure the device is rooted (Bootloader unlocked) before going forward. [How to unlock Bootloader]
  • Though installing custom ROM improves the device's performance and UI experiences, it makes the company warranty void and it will no longer be liable to provide updates in future [users can restore warranty by flashing the device with stock-ROM].
  • Installation of custom ROM requires clearing of memory in the smartphone. So make sure to back all the data by installing Clockwork Mod (CWM) Recovery/ TWRP.
  • Make sure you have installed USB drivers on the PC, or else the device will not be recognised by the computer.
  • Make sure your device has more than 80 percent battery, or else there is a chance of the smartphone getting temporarily bricked if the installation process is interrupted mid-way.

[Disclaimer: This procedure is very technical and should be performed by a person with sound knowledge of rooting (or manual software installation) Android devices. If the step-by-step installation process is not followed properly, there are chances of the smartphone getting bricked or being permanently irreparable. IBTimes India cannot be held responsible for any damage or claims from readers if the procedure does not yield the required results or if the smartphone is bricked. Hence, users are advised to proceed with caution.]

Tutorial: Step-by-step installation procedure of AOSP v6.0 Marshmallow custom ROM on OnePlus One (aka Bacon) model via TWRP recovery method:

Step 1: Download AOSP v6.0 Marshmallow custom ROM (HERE/HERE) in to your PC.

Step 2: Connect OnePlus One to the computer

[Note: Before plugging the phone to the computer, be sure that you have installed USB driver software, if not, click HEREto download the firmware]

Step 3: Place the AOSP 6.0 Marshmallow custom ROM into the phone's storage memory.

[Note: Users are advised to paste the .zip file in the storage root folder, not in any other folder.]

Step 4: Turn off device and disconnect it from PC

Step 5: Perform Recovery mode sorties by long pressing Volume (Down)+Power buttons

Step 6: Once entering the TWRP settings menu, clear phone's memory (full) by selecting 'Wipe' option. Once done, select – 'Swipe to Factory Reset' perform factory reset

Step 7: Return to TWRP settings and tap 'Install' by the selecting .Zip file in the phone's memory downloaded from PC

Step 8: Come back to TWRP menu setting to approve the installation by tapping 'Swipe to Confirm Flash'

Step 9: Flashing of the custom ROM begins and after few minutes, a message 'Successful' appears on the screen, thus completing installation.

Step 10: If faced with boot loop problem, navigate back to TWRP settings, and select 'Wipe cache/dalvik'. This procedure will help resolve any issue with regard to custom ROM installation

[Note: If faced with any other issues, please drop-in your concerns, HERE]

[Credits: XDA Developer Forum, updateing, Team Android]