DESCRIPTION

ROM SAMSUNG Galaxy S2 I777 – ROM Android 4.2.1 CM 10.1

1.Connect your phone to PC using USB cable.

2.Copy downloaded files to the SD card of your phone. Important: Don’t extract any files.

3.Disconnect USB and then turn off your phone.

4.Boot into recovery mode. To do so, press and hold Volume Up, Home and the Power button, continue to hold all three until the screen flashes, then release all buttons.[use volume buttons to scroll and Power button to select]. Alternatively try this: Recovery Mode without Key Combination.

5.Perform a Nandroid backup of your existing ROM that you can restore later if this new ROM not work or you want to go back. To perform a backup, select Backup and Restore, then on the next screen, select Backup again. Go back to main recovery menu after backup is complete.

6.Then perform data wiping task. To do so, select wipe data/factory reset, then select Yes on next screen to confirm your action. Wait few minutes till the data wipe is completed.

7.Select install zip from sdcard, then select choose zip from sdcard. Now, locate the cm-10.1-20121219-NIGHTLY-i777.zip file that you copied earlier in Step 2 and select it by pressing Power button. Confirm installation by selecting Yes – Install _____.zip on the next screen. The ROM installation will begin.

8.When installation is completed, go back to the main recovery menu and select reboot system now to reboot the phone and boot up into customized Android 4.2.1 Jelly Bean ROM CM 10.The first boot will take time, so be patient!

※Please make a backup of your device before installing or updating ROM