How to flash the official Ubuntu SD image to SD card from an Ubuntu host?

I can only find the tutorial using the Windows tool SD_Firmware_Tool._v1.45 http://wiki.t-firefly.com/index.php/Firefly-RK3288/Boot_Ubuntu_from_sd/en

Is there a Linux version of the tool?

Simply flashing Firefly-RK3288_SDBoot_Ubuntu14.04_201503021436.img into the SD card does not work, I get no serial console.

The eMMC image Firefly-RK3288_Ubuntu14.04_201607222032.img works.

hi
the Firefly-RK3288_SDBoot_Ubuntu14.04_201503021436.img is very older firmware. and the loader if very older too .
so I suggest you to use the new firmware.

where I get new version Ubuntu ??

you can make by yourself.

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