ShadowCodeGaming, Jun 9, 2015 : Hey guys, Just got my OnePlus on monday, and noticed it's not getting the OTA update to Lollipop. It's running build xnf9xbs28k. Any help? Phone is stock, never had any updates. Edit: Here's my fix for anyone who has this issue: So, I received a OnePlus stuck on build xnf9xbs28k, which means it doesn't get OTA updates. This sucks because build xnf9xbs28k was installed from the factory. So, here's how to downgrade back to 05Q without losing your data! Download this zip file: https://www.androidfilehost.com/?fid=95747613655046106 and name it 1.zip Download this zip file: https://www.androidfilehost.com/?fid=95747613655044298 and name it 2.zip Download this zip file: https://www.androidfilehost.com/?fid=95784891001607927 and name it 3.zip Finally, download this zip file: https://www.androidfilehost.com/?fid=95916177934526373 and name it 4.zip Copy all these zip files over to a folder on your OnePlus One Shut down your phone. Boot into recovery mode by holding Volume Down & Power Select 'Apply Update' Select 'Choose from internal storage' Select '0' Select the folder you placed the zip files in. Select zip 1.zip to start the process. Repeat steps 8,9,10,11,12 for each zip file (without rebooting) Now select Wipe Cache Finally, click reboot system now. And there you go. Takes about 5 minutes.