Guide to get 1440p working (root needed):
1. Wipe YouTube app
2. Uninstall YouTube app
3. Open file explorer that has root permission (i.e. es file explorer)
4. Navigate to /system/ (Make sure it's mounted as r/w)
5. Open build.prop
6. Change the line at ro.build.version.release=4.4.4 to ro.build.version.release=5.0 and save
7. Reboot device
8. Download and install this YouTube version https://www.dropbox.com/s/vm9ncnzyy7g94pf/com.google.android.youtube-5.10.1.5.apk?dl=0
9. Go to the play store and disable automatic updating of the YouTube app
10. Open YouTube app and select a video that supports 1440p
11. Pause the video and change the quality to 1440p
12. Close the video (just the video, not the app)
13. Select the video again
14. Enjoy
I've made this guide as thorough and fool proof as possible. The last few steps are optional and not always necessary, occasionally the setting for 1440p doesn't like to stick. A quick way to check if it took is if the load bar resets, if it does you don't need to close the video and reopen it.
1. Wipe YouTube app
2. Uninstall YouTube app
3. Open file explorer that has root permission (i.e. es file explorer)
4. Navigate to /system/ (Make sure it's mounted as r/w)
5. Open build.prop
6. Change the line at ro.build.version.release=4.4.4 to ro.build.version.release=5.0 and save
7. Reboot device
8. Download and install this YouTube version https://www.dropbox.com/s/vm9ncnzyy7g94pf/com.google.android.youtube-5.10.1.5.apk?dl=0
9. Go to the play store and disable automatic updating of the YouTube app
10. Open YouTube app and select a video that supports 1440p
11. Pause the video and change the quality to 1440p
12. Close the video (just the video, not the app)
13. Select the video again
14. Enjoy
I've made this guide as thorough and fool proof as possible. The last few steps are optional and not always necessary, occasionally the setting for 1440p doesn't like to stick. A quick way to check if it took is if the load bar resets, if it does you don't need to close the video and reopen it.