We pressed the setup button and checked the player's firmware version (1.1.1).

KISS had released a newer firmware that improved many features (1.1.2), so we went ahead and installed it. The procedure is simple. Download the latest firmware, burn it onto a CD disc, insert the disc in the player's drive and...

You need to power the player down and then up in order to start the firmware flashing... Shortly after the DP-558 boots and reads the disc, we were given two options: a full or partial update. It is advised to choose partial update, or you will lose all your settings...

After rebooting, we checked that the player's firmware had been upgraded to v1.1.2