I9001BUKPC Android 2.3.6 Gingerbread Galaxy S Plus I9001 for Italy Vodafone subscribers is available for a download. The firmware update can be downloaded OTA or via Kies Software, however we will be going through the guide to install the update manually.
BUKPC Android 4.1.2 is an official branded firmware update by Samsung for Galaxy S Plus I9001 , so device will lose root and other Custom ROMs installed. You can always root your device later.
Install official BUKPC Android 2.3.6 firmware on Galaxy S Plus I9001
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.
Download Kies Software to install drivers.
Download BUKPC Android 2.3.6 firmware (I9001BUKPC_I9001OMNKP5_OMN.zip) on Galaxy S Plus I9001 and Odin(Odin307.zip).
Extract the Firmware file which you have downloaded in above step. You will get “.tar” file along with other files.
Extract Odin to get “Odin3 v3.07.exe” file.
Switch off device.
Boot device into download mode. Press and hold Volume Down, Home, Power till device turns on and then press Volume Up to enter download mode.
Connect device to computer using USB cable. Odin will detect your device and ID:COM will turn yellow and a message appears saying “Added”. Re-install drivers if Odin fails to detect device.
Click on “PDA button” in Odin and navigate to select “.tar″ file which you have downloaded.
In Odin make sure that “Auto Reboot” and “F.Reset Time” are selected and “Re-Partition” check box is unchecked.
Click on Start button in Odin to start flashing Android 2.3.6 firmware. When flashing is complete you will get a PASS message.
Disconnect device from your computer and let it boot automatically.
You have installed official BUKPC Android 2.3.6 firmware on Galaxy S Plus I9001. To know the firmware version go to Settings >> About Phone.