- Base Firmware: I9300XXELKC (4.1.2)
- Region: Europe
- Country: Poland
- Carrier: Unbranded
- Build Date: 30 November 2012
- Modem: XXELKC
- CSC: OXXELK4
- Change List: 566833
- Download I9300XXELKC_I9300OXXELK4_XEO.zip
- Extract the content from the zip file
- Turn off your Galaxy S3
- Download ODIN
- Open the ODIN version that you just downloaded
- Turn on the Galaxy S3 in Download Mode (Press Home + Volume Up + Power buttons)
- Wait for ODIN to show the yellow sign
- Click on PDA and add the .tar.md5 file that was located in the downloaded zip file
- Click START
- After reboot the installation is finished
- Download Samsung Galaxy S/S2/S3 CSC from Play Store
- Open the program
- Click on the 'Change CSC' button
- Select you Country's CSC
- Select 'Install' (This will wipe all your data, so you should make a backup first)
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