Official Jellybean 4.1.2 UCMD8 Firmware Update For Galaxy S2 SGH I777

galaxy s2 at&t jellybean

AT&T Samsung Galaxy S2 SGH i777 gets the official update finally after long time. Users eagerly waiting for the update can download the package and flash it in Odin process. The release of this Jellybean 4.1.2 firmware is dubbed as UCMD8 that is from Samsung itself. Hence the update wont root the device rather revoke it and get back to the stock ROM.

Pamandroid will not be responsible for any mishap and there won’t be because it’s a good opportunity to get the device updated as well as good for those who have bricked their AT&T Galaxy S2.


  • AT&T Samsung Galaxy S2 SGH i777
  • Computer with internet connectivity as well as Samsung KIES must be upgraded
  • Original USB cable
  • The battery must be 40% or more
  • Enable the USB Debugging by tapping on Settings-> Applications-> Development and tick the USB Debugging box

Procedure to get official update of Jellybean 4.1.2 manually on Galaxy S2 I777

Step 1: Check the model number and its very important because this will not be applicable on any other version or any other carrier device because it will brick it. Go to settings->about phone->model number.

Step 2: I you are already on any custom ROM then wipe out the cache in recovery mode. Well switch off the device and press Volume up key+ok button+ power button and then release when the device is on in recovery. There select wipe cache partition and then select reboot system now.

Step 3: Download the Official Jellybean 4.1.2 UCMD8 Firmware package ( in your computer from here and then the odin ( too. Extract both the zip files in WinRAR and place it in desktop. In the meanwhile launch the odin by hitting the exe file.

Step 4: Now switch off the device and press Volume down key+ ok button+ power button and release them when a green robot appear on screen. Then attach the device to computer via original USB cable. As soon the ID:COM box turns blue to yellow which means the device got detected. If not then upgrade the KIES.

Step 5: Now click on PDA in odin panel and select the tar file and come back to hit the Start option in panel itself. Wait for few minutes and then the device will reboot automatically.

Voila! You have successfully installed the Official Jellybean 4.1.2 UCMD8 Firmware on your AT&T Samsung Galaxy S2 SGH i777. If you get stuck in the boot menu then take off the battery and again insert it and power up the device. Check the firmware details in about phone option in setting section. If you loved the post then do like the Facebook and Google +. Do stay connect to Pamandroid for more details in Android daily.

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