* Format micro SD card to FAT32 - alocation 4kB or 8kB, create small partition e.g. 1GB, set as "partition active"
* Copy all files to formated micro SD card
* Power off device
* Discoonect switch J7
* Insert micro SD card to device
* Power ON device
* After update power off device
* Connect switch J7
* Power on device
* New image is installed