nvram set ssh_en=1 && nvram set uart_en=1 && nvram set boot_wait=on && nvram set bootdelay=3 && nvram set flag_try_sys1_failed=0 && nvram set flag_try_sys2_failed=1
nvram set flag_boot_rootfs=0 && nvram set "boot_fw1=run boot_rd_img;bootm"
nvram set flag_boot_success=1 && nvram commit && /etc/init.d/dropbear enable && /etc/init.d/dropbear start