Download the PH-A47U00802FI04US.EXE file to a temporary or download directory (please note this directory for reference).
Go to the directory where the file was downloaded and double-click the PH-A47U00802FI04US.EXE file to begin the installation.
At the "Phoenix WinPhlash for VAIO" box, click Browse.
At the "Specify the New BIOS File" box, click the "R0245U0.WPH" file.
NOTE: If the R0247U0.WPH file is not displayed in the "Specify the new BIOS File" Box, click Exit to abort the BIOS update. Please download and install the PH-A47U00802FI04US.EXE file again.
Click "FlashBIOS" to begin the BIOS update process.
At the "Warning" box, confirm all other programs are closed, all peripheral devices are disconnected, and the computer is connected to power via the AC Adapter, and click OK. Please wait as the BIOS is updated.
At the "System BIOS was successfully updated" screen, click Shutdown.
After the computer shuts down, wait for few seconds and then turn on the computer.
After the computer restarts, installation of the BIOS update is complete.
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