You can do it yourself, Give it a go.
1,Download ZGEMMA H2S software
2, Unzip it and copy the Zgemma folder to the USB Stick (pre formatted to fat32)
3, Plug the USB stick to the back panel USB port.
4, Power on at rear and whilst powering on ALSO press and hold in the FRONT Power Key until you see [USB] on the LCD display.Then the display shows “Flash”
Leave for a few minutes whilst the firmware is loading .When done the box will boot up on its own. Remove usb stick once boot has completed.
You will then get the onscreen TV setup wizard.