1. Having trouble connecting your Android phone to your computer? You need to enable USB debugging mode. See here: How to enable USB debugging – Gingerbread, Ice Cream Sandwich and Jelly Bean.
2. Make sure your Android device is loaded to the battery level 80-85%. This could help you: How to Check Battery Percentage. Why? Because if the phone turns off suddenly during the installation of a custom ROM, showing an official firmware update or installing mods etc – the phone might get brick or go dead permanently. Nobody wants that, right?
4. Most tutorials and user guides on the Android team are factory unlocked for Android phones and tablets. We recommend not to try our guides if the phone is locked to a vehicle, unless we have specified the name of the company or a device model.
If you find the tips above and were helpful for you, giving us a +1 or to thank us!
All set and ready? Good. Now, let’s proceed with the tutorial below and update Droid 3 XT862 Android 4.2.2 AOKP Build 4 Jelly Bean firmware.