J200f Downgread Modem File 5.1

J200f Downgread Modem File 5.1

  • if patch netwark J200F Z3x error Ztool Then Write This Modem file
  • From Settings > About Device > Software information > Build Number
  • Back to Developer options > Enable OEM Unlock
  • Extract the (Zip,Rar,7z) file using 7z.
  • Download Odin
  • Extract Odin ZIP file
  • Open Odin.exe
  • Reboot Phone in Download Mode (press and hold Home + Power + Volume Down buttons)
  • Connect phone and wait until you get a blue sign in Odin
  • Add the file to CP/Modem
  • Make sure re-partition is NOT ticked
  • Click the start button and you know the rest


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