=========================================================================== $NetBSD: MESSAGE,v 1.1 2020/04/06 15:08:34 tnn Exp $ Example command to install U-Boot to an empty SD card: # dd if=${LOCALBASE}/share/u-boot/rockpro64/rksd_loader.img seek=64 of=/dev/rld0d Alternatively, to install to SPI flash: dd if=${LOCALBASE}/share/u-boot/rockpro64/rkspi_loader.img bs=64k of=/dev/spiflash0 See also http://opensource.rock-chips.com/wiki_Boot_option ===========================================================================