If you recently updated your AT&T Galaxy S2 to the latest Android update, Jelly Bean UCMC1, then you probably lost root and any custom recovery or ROM you had on your device. So probably you will want to root your device now, or to install a Custom Recovery.Before proceeding with the rooting procedure, there are some pre-requisites:
Make sure you are using this on a SGH-I727 Galaxy S2 because otherwise you will brick your device.
Now place the downloaded file on your phones Sd card.
Turn off your device and enter Recovery Mode. For that you have to press both volume keys at the same time and hold them. While still holding the buttons, press the Power key. Release the Power button only when the phone vibrates or the logo appears on the screen. Release the volume keys only when the screen turns black. After a few seconds you should be in Recovery Mode.
Choose Install zip from sd card and then Select zip from sd card. Choose the file from step 1. Hit Enter until the installation begins.
At the end, reboot the device.
Go to Applications, Open SUPERSU and then let the program update the binaries.
That's it, you have just rooted your Galaxy S2 Skyrocket SGH-I727.
Updato.com is a participant in the Amazon Services LLC Associates Program and other affiliate programs, and as an Amazon Associate we earn from qualifying purchase made through some links on this page. The price you pay is not affected at all by whether you buy through our links or direct from Amazon.