Samsung YP-Z5AS - 4 GB, Digital Player Firmware Upgrade Manual page 4

5) Disconnect the USB cable. The following screen will come
up. Select Upgrade
power off the system.
6) Turn ON the unit. The system will automatically upgrade the
firmware. After finishing the upgrade, the new firmware will
be started automatically.
7) Check the version information in the Settings > System Info
> Version tab.
to initiate firmware upgrade. This will