Did you tried to unlock your bootloader? When you tried to flash something does it say
Device not unlocked cannot flash or erase
No problem. Here is the solution.
- First copy the zip file (download link at bottom) to your OnePlus One.
- Flash it with your Recovery.
- That’s it.
Can’t copy file to your OnePlus One? Try to sideload.Unlock BootLoader (688 downloads)