Download your Image for install on multiboot.
IMPORTANT Don´t unzip the .zip File
Then shift it to the USB Drive
Plug the USB Device in the os Mio4k.
Step 1: Press the blue key on the remote, then press the right key and go to Flash Online
Step 2: Now press the yellow button, now below might stand STARTUP_2 (it gives Startup 2,3,4).
Step 3: Press the blue key and now the yellow key then go to your USB Device
Step 4: Go to the .zip and press the green button on the remote.
Step 5: Now the as is flashing the Image
How to use Multiboot:
Step 1: Press MENU on your remote and go to Standby/Restart then go to Multiboot and press OK
Step 2: Now you can select your image with the right/left key and start with the OK key