Rooting Google Glass is a pretty simple and straightforward method and it gives you access to all the Glass’ features, by removing every limitation that it might have while unrooted.
Before telling you how to root the device, please note that it will void your warranty and you won’t be able to receive OTA updates anymore, so you will have to install the updates manually. This shouldn’t be a big issue, as installing them is pretty easy and the update files are released once with the update.
One more thing you should note is that you can brick your device if you do anything wrong, so you have to be very careful. And considering that there aren’t many Glass Explorers out there, you might not be able to find someone to help you unbrick it, so don’t take the risk if you don’t know what you’re doing.
In order to root Google Glass you will have to follow the steps below very carefully. You may also have to download two files and connect to your device through ADB.
Root Google Glass – Fast Guide
First you will have to download Android SDK Tools and boot.img on your computer. You can find the latest version of those files here. Then copy boot.img in a directory that you can remember, as you will have to execute the adb commands from that directory.
Enable Debug Mode on your Google Glass at Settings > About Device > Turn on Debug.
Make sure that Google Glass is on and connected to your computer.
Now open the command prompt on your computer and type the following adb commands:
adb devices adb reboot-bootloader fastboot devices fastboot oem unlock fastboot oem unlock fastboot flash boot boot.img fastboot reboot adb root
Now your Google Glass should be rooted.