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  2. Download Samfirm 1.4.3
  3. Download Samfirm 1.4.3

Download __top__ Samfirm 1.4.3 Jun 2026

: Input your device’s model number (e.g., SM-G973F) and the three-letter Region/CSC code (e.g., SER for Russia, SEK for Ukraine).

Find the under Settings > About Phone > Software Information > Service Provider SW Ver. Look for three-letter combinations like BTU (United Kingdom), XAA (USA Unlocked), or DBT (Germany). Step 2: Input Data into SamFirm Download Samfirm 1.4.3

Check the box marked . This forces the tool to scan for the newest official OS version available for that region. : Input your device’s model number (e

Boot your Samsung device into (usually by holding Volume Down + Power, or Volume Up + Volume Down while plugging into a PC, depending on the model). SER for Russia

Choose a destination folder on your computer to save the package.