Philips WACS57 Firmware Upgrade Manual page 7

→ You will start transferring the file to WAC5 Center
→ After file transferring is finished, upgrading starts automatically on
WAC5 Center
→ The Center's display shows "Updating firmware, please
wait......". A progress bar appears
→ Center will reboot itself twice during the upgrading process
→ After about 5 minutes, Center returns to HD mode. The upgrading is
completed
(Note: - Keep your Center turned on during the upgrading.)