I was wondering if there is a solution to boot from a USB thumb drive and flash the OS to an eMMC. Currently I´m running ARMbian on a Rock64 with an eMMC module installed. Since I´m still trying to figure out how to set up the device I keep reinstalling the OS. So it would be nice to have a way without opening the case, take out the eMMC, hook it up to the PC to flash and reinserting. Thanks in advance.