OnePlus One receives Android 5.1.1 Lollipop update via Dirty Unicorns v9.3 ROM: How to install

OnePlus One (aka bacon) users can now enjoy the most stable Lollipop experience with Material Design UI on their smartphone, thanks to the release of Android Open Source Project (AOSP) based Android 5.1.1 Dirty Unicorns v9.3 ROM.

The new Dirty Unicorns ROM brings loads of bug-fixes and feature enhancements over the previous release. The complete list of bug-fixes and feature enhancements is posted below:

• Fix for playing video/audio
• Fix for navbar theming
• Default gestures (v and o) to activate flashlight and camera
• Soft reboot on power menu
• List view animation
• Weather lockscreen (and weather info on status bar)
• Added 'Kernel Adiutor'
• Long-press lock icon to sleep
• Ability to separate ringtone & notification volume
• Memory bar on recent apps
• Advanced location settings
• Gesture to unlock at lockscreen
• KCAL support
• Pie
• Update to Android 5.1.1
• Materialize DSPManager
• Fix SysUI FC for Themes with QS mods
• Change checkboxes to switches
• Remove Voice Dialer
• Fix for Play Services deep sleeping
• Fix various Theme Engine issues
• Add back notification LED settings backend
• Fix NavRing FC
• Expose values for our applications to be themed
• Hide lights settings if device doesn't support them
• Don't set preferred APN's automatically
• Fix battery and notification lights
• Various translations

IBTimes UK reminds readers that it will not be held liable for any damage to device during or after the ROM installation. Users are advised to proceed at their own risk.

Pre-requisites

• The instructions given in this guide are meant for the European variant of OnePlus One (aka bacon) only. Verify device model number by navigating to Settings > About Phone.
• Ensure the phone has at least 80% battery charge to prevent unexpected device shutdown (due to battery drain) while installing the ROM.
• Back up data and settings using a recommended custom recovery tool, like ClockworkMod (CWM) or TWRP, as it creates a complete image of the existing phone setup. In Recovery, choose Backup and Restore and tap Backup.
• Verify correct USB drivers for the phone are installed on the computer (download OnePlus One USB drivers).
• Enable USB Debugging mode via Settings > Developer Options (if running Android 4.0 or above) or Settings > Applications > Development (if running Android 2.3 or earlier).
• Ensure that the device is rooted with CWM recovery installed and its bootloader is unlocked.

Downloads Required

Android 5.1.1 Lollipop Dirty Unicorns v9.3 ROM for OnePlus One

Google Apps

Steps to Install Android 5.1.1 Lollipop on OnePlus One via Dirty Unicorns v9.3 ROM

Step 1 - Download Android 5.1.1 Dirty Unicorns v9.3 custom ROM for OnePlus One on the computer.

Step 2 - Connect and mount the phone's USB mass storage on computer with USB cable.

Step 3 - Now, copy the downloaded Dirty Unicorns ROM zip file to the root folder on the phone's SD card.

Step 4 - Power off the phone and disconnect its USB cable from computer.

Step 5 - Boot the device into Recovery Mode by pressing and holding Volume Down and Power buttons together.

Step 6 - Once the phone enters CWM Recovery, perform a full data wipe task by clicking Wipe Data/Factory Reset. Use the Volume keys to navigate between options and Power button to select an option in the Recovery Mode.

Step 7 - Perform Wipe Cache Partition and wait until the process completes.

Step 8 - Perform Wipe Dalvik Cache as well. To do this, go to 'advanced' option and then click Wipe Dalvik Cache. This will help in preventing boot loop issues or any boot ROM related errors during firmware installation.

Step 9 - Then return to the main recovery menu and choose Install Zip from SD card.

Step 10 - Click Choose Zip from SD card. Use volume keys to navigate to the Dirty Unicorns v9.3 ROM zip file that you copied earlier to your phone's SD card and choose it by tapping the Power button. Confirm the ROM installation on next screen and the installation process will begin.

Note: Repeat Step 9 and Step 10 to install Google Apps (Gapps) as well.

Step 11 - Once the ROM and Gapps installation completes, go to "+++++Go Back+++++" and select Reboot System Now in the Recovery menu.

The phone will now reboot and the first boot may take about five minutes to complete. So, please be patient.

Your OnePlus One is now running the latest Android 5.1.1 Lollipop via Dirty Unicorns custom ROM. Go to Settings > About phone to verify the firmware version installed.

[Source: XDA]