ποΈ Install an image to SPI Nor Flash
Meles has a SPI nor Flash on board. It contains the Bootloader and supports booting other media that the SoC download mode itself does not directly support such Micro SD card and USB.
ποΈ Install an image to MicroSD Card
SoC TH1520 used on Meles supports booting from SPI Nor Flash and eMMC.