
If it reads 'UNLOCKED' you need to re-lock it. Now power it back on while holding in the volume down key.Īt the bottom of your screen you should see Androids skateboarding, and at the top of your screen you should see text that either reads 'LOCKED' or 'RELOCKED'. If you're not sure, power down your device. If you've been using Cyanogen, odds are it isn't. To proceed further, the bootloader on your device needs to be locked. On your HTC One, select USB debugging in Settings -> Developer Options, if it's not already. This utility will run a setup wizard and apply the update to your device automatically via micro USB cable when you open it (when we're ready).

This is the most recent software update to the AT&T HTC One officially released by HTC. To ensure you have the drivers on your PC that you need, download and install the HTC Sync Manager from HTC. Image via Step 5: Download HTC Sync Manger
