[OpenWrt Wiki] Image formats
openwrt.org › docs › techrefThe initramfs-kernel image is used for development or special situations as a one-time boot as a stepping stone toward installing the regular sysupgrade version. Since the initramfs version runs entirely from RAM, it does not store any settings in flash, so it is not suitable for operational use.
FS#1071 : Sysupgrade fails when kernel console is disabled
bugs.openwrt.org › indexFS#1071 - Sysupgrade fails when kernel console is disabled. Hardware used: - Gateworks Ventana imx6 board (GW5200) Synopsis: Running sysupgrade with a valid image fails if the kernel console is disabled in u-boot (setenv console ; saveenv; reset) As soon as sysupgrade starts, the board reboots immediately. The detected reboot reason displayed ...