Check if the firmware you want to use is the right one for your SAMSUNG I777 Galaxy S II. The table below contain all the useful information you might need for your software. The firmware posted here was designed for GALAXY S â?? for I777UCMD8 PDA version and I777ATTMD8 CSC code. This is a dedicated None bootloader type and CRC software. Android Jelly Bean 4.1.2 comes with Android Security Patch Level. Please also make sure if the 1154545 changelist and build date are correct for SAMSUNG I777 Galaxy S II.
If the specification posted for the software is correct and you want to use the ATT AT&T United States software from United States, simply tap on the download button. Size of all flash files posted is .
| Firmware Details: | |
|---|---|
| Model: | SGH-I777 / GALAXY S â?? |
| PDA/AP Version: | I777UCMD8 |
| CSC Version: | I777ATTMD8 |
| Bootloader/ BL: | N/A |
| Region: | ATT / United States  |
| Carrier/Brand: | AT&T United States  |
| OS: | Android / Jelly Bean  |
| OS Version: | 4.1.2 |
| Build Date: | N/A |
| Security Patch Level: | N/A |
| Changelist: | 1154545 |
| CRC: | N/A |
| Size: | N/A |
You will download the app that will download the latest version of the firmware. Why should you use this app instead of download directly?
How to flash your phone with the new firmware? How to update SAMSUNG device? How to change firmware in your device?
Click here to read the article about installing downloaded software
CHECK IMEI 
