wirte the armbian image to SD Card and than insert and start , than it should boot from SD card like the multitool
i had nowadays 4 of this box, one old AMlogic s802 ( over 5 years in use with armbian scan and printserver) ) 1 xrk322x that work out of the box with armbian , one rk322x with resolder wifi from wired china chip to rtl8723ds , and now a rk3328 with android ( sadly sd card is on wrong sdio port)
I sent them a message, even sent an email and a whatsapp to the manufacture ( junuo ? hehe) , will see if I get a reply, google sadly doesn't help as seems it's the latest version of the board (v3.0), I really want to make this wifi work 😂
The thing about SBC is that I already have one, the thing is that I spent some good time searching for a chip that would have multiple usb hosts instead of just one, and that's not easy to find, specially not below 50 euros, I came across the rk3228, that somehow is available at those tv boxes :(.