People who have missed Official ICS update for AT&T Galaxy SII i777 because they have rooted their device and now unroot and update to latest ICS package very easily. We are providing detailed Tutorial to unroot and install Stock Android 4 ICS on Galaxy S2.
The process is very similar to previous tutorial where we have told about updating to ICS and rooting it using Odin. You just need to download and flash the Stock ICS ROM using odin and it will Unroot your device.
Pre-Requisite:
1. Backup your device data as you will lose contacts, emails and settings while flashing firmware through Odin.
2. Recharge your device to atleast 60% to make sure you do not face any issues.
3. Enable USB debugging. Go to settings>>Developer options and check the option box.
Download:
How to Install Stock ICS ROM to Unroot AT&T Galaxy SII SGH i717:
Step 1: Extract both Odin and ICS package to different Folder. Now, Run Odin on Windows PC. Make sure you have administrative access.
Step 2: Check phone and make sure USB debugging is enabled. Shut down the phone and restart in Downloading Mode. Press and Hold Volume up+ Volume Down+ Power button together and connect the data cable. You will see a warning Sign, press the Volume up button to enter into download mode.
Step 3: Now, you will see a yellow box in ID:Com section that confirms that Phone is connected safely. Now, click on PDA button on Odin interface and select the file named as “I777UCLE5_I777ATTLE5_I777UCLE5_HOME.tar.md5″ and Hit start to flash the firmware.
Step 4: It will take few minutes for process to complete please do not try to stop the process or disconnect the cable if it takes long.
Step 5: The phone will restart and normal Android welcome screen will be shown. Shut download and restart in CWM recovery mode. Hold down Volume up+ Vol down + power button for few seconds to enter into custom recovery. select “Wipe Data/Factory reset” and Confirm it.
Step 6: Once done select “Go Back” and then “reboot system now”.
The phone will restart and then you can go ahead and restore all the settings and data.
Tip: you can still enjoy the ICS Custom ROM without rooting your device. Check out the best Custom ROM for AT&T Galaxy S2 here.
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