How to unlock Samsung Galaxy S2 AT&T SGH-i777

Last post of the year 2011!

The following is a step by step guide to unlock AT&T Samsung Galaxy S2 (Attain) to use on All GSM carriers including T-Mobile. It is fairly long process but I have verified every step on Android 2.3.4 and it had worked for me. It should work for you too. This is the easiest method i've found and it does not require you type or modify files manually. So it's safest and you will be unlikely to brick the phone.

1. Check whether your phone is already unlocked or not. Follow the steps here.
2. Check whether Your Samsung Galaxy S2 is on Android 2.3.4. You may find it in the Settings->About Phone menu. If not, please restore to the stock rom 2.3.4 in order to root the phone. You may follow this guide to restore to stock rom.
3. If it is not unlocked. Download and install superoneclick to root the phone. You can download the tool from here.
5. Now go to Marketplace download and install the busybox Installer by Stericson. Run it to install busybox.
6. Now go to Marketplace download and install the app Galaxy_S Unlock by Helroz. Follow the steps in the app to unlock. 

Note: If the anything goes wrong. You may hard reset the AT&T Samsung Galaxy S2 and start over.

 

Leave a comment if it works for you!

How to restore Samsung Galaxy S2(SGH-I777) to stock rom

The following is a step by step process of restoring the Samsung Galaxy S II (AT&T Attain I777) to stock ROM. Sometimes a factory reset does not fix the issue with the phone. You will then need to perform a restore to stock ROM to fully recover it. Or if your phone is bricked during flashing, restoring to stock ROM may also fix the issue. I have personally tried the below steps and it worked for me. 

• Make sure Samsung USB driver is installed on your PC
• Download and unzip the file on your desktop
• Extract and run the file (run as administrator if you are on Windows 7)
• Put the phone in download mode (Hold both volume keys and then connect to PC with USB cable)
• Odin will should detect the phone in several seconds and show a yellow bar with com port number
• Press start and it shall progress and then reboot the phone. Once it's done, odin will show a green bar with "passed" and the phone will reboot
• Congratuations, now you just flashed the phone to stock ROM  

Leave a comment if it works for you!

How to factory reset Samsung Galaxy S2 AT&T

This is a simple step by step guide to hard reset Samsung Galaxy S II smartphone AT&T Attain

1. Power off the phone
2. Hold volume both volume up and down button.
3. Press the power button and release it once the phone boots up with AT&T logo.
4. After a few seconds you should see a menu. Release the volume buttons
5. Choose "factory/wipe - delete all user data" with Volume down button to change your selection and power button to select.
6. Now choose reboot the phone and it should be restored to factory fresh state.

 

Leave a comment if it works for you!

How to enter unlock code for BlackBerry 9810 AT&T (Blackberry 7)

• Go to Settings -> Sim card
• Enter mepd, it will show a screen with network status. If it says network active, the phone is locked to AT&T
• Hold alt key and enter mep2. Now you can enter the unlock code in the popup window and unlock your blackberry 9810