AT&T Galaxy S2 I777 can update to latest Android 4.2.1 using Slim Bean ROM. Slim Bean Beta 1 ROM is in development stage so there may be issues and bugs.
Features of Slim Bean Beta 1 ROM
Dotted Battery Mod and color picker
Battery bar mod
Notification Background customization
Notification row transparency
Quick Settings for
Network mode tile
Dismiss on toggle
Updated APN + SPN
Wifi name in notification drawer
Performance Settings (need to tap build number a few times)
Cursor control using volume keys
Disable full screen keyboard
Alternate app chooser
Clock styles and color chooser
ADB over wifi
Camera power shutter mod
Wifi country specific settings
Notification IME selectior
SMS quick reply & mark as read from notification
All MMS features
All Contacts features
2G/3G toggle works weird on power widgets, not working on quick settings
ADB over WiFi may require toggling of ‘Android Debugging’
Performance settings flaky in some devices
Data toggle does not respond well in quick settings
We will be going through the guide to install Slim Bean Beta 1 ROM on AT&T Galaxy S2 I777.
The guide mentioned below is only for AT&T Galaxy S2 I777 and not for any other device. You can check Model number of device by going to Settings >> About phone.
We cannot be held liable of any damage done to your device while following the below mentioned procedure.
Install Slim Bean Beta 1 Android 4.2.1 ROM on AT&T Galaxy S2 I777
Take a complete backup of data,apps and settings as the procedure may wipe your data.
Make sure that the battery of device has a minimum charge of 60%.
Enable “USB debugging” on your device by going to Settings >> Developer options >> Enable USB debugging.
ClockworkMod Recovery should be installed.
Download Slim Bean Beta 1 Android 4.2.1 ROM for AT&T Galaxy S2 I777 and Google Apps Package.
Copy both the zip files to SD-Card of your device without extracting.
Switch off device.
Boot into recovery. Press and hold down the Volume Up, Volume Down and Power buttons to enter recovery.
Select “wipe data/factory reset” and wait till the data gets wiped completely.
Perform a Nandrop backup of your existing ROM. Select “Backup and Restore” and then select “Backup” again.
Select “install zip from sdcard” and then select “choose zip from sdcard”. Navigate to “Slim Bean ROM” file which you have downloaded and confirm to “install”. Wait till installation gets finished.
Repeat the procedure to install Google apps by selecting “choose zip from sdcard” and then select “Gapps.zip” and install.
Select “reboot system now”.
Slim Bean Beta 1 Android 4.2.1 ROM on AT&T Galaxy S2 I777 is installed.