> Go to FIRMWARE 5.1 page and DOWNLOAD the Firmware update .zip file;
> Unzip the files;
> Connect the SD card (max size 8Gb) to your computer (using a card reader if necessary), be sure the SD card is formatted in FAT 32 format;
> Drag and drop (or copy and paste) the unzipped files from the computer onto the SD card;
> Turn off the MULTIAMP;
> Insert the SD card into the MULTIAMP and turn it on;
> At the “System” menu choose “Firmware update” option and follow the instructions that will appear on the display;
> Do not switch off the unit during the upgrade.;
> When the upgrade procedure is complete a message will appear on the display asking to turn off the unit, wait 5 seconds and then turn it on.