root@OpenWrt:~# sysupgrade -n sysupgrade.bin
Thu Jan  1 00:02:39 GMT 1970 upgrade: Image not in /tmp, copying...
verifying sysupgrade tar file integrity
Thu Jan  1 00:02:39 GMT 1970 upgrade: Commencing upgrade. Closing all shell sessions.
Command failed: Watchdog handover: fd=3
- watchdog -
Watchdog does not have CARDRESET support
Hangup
-ash: can't set tty process group: Not a tty
[1]+  Hangup                     sysupgrade -n sysupgrade.bin
root@OpenWrt:~# Thu Jan  1 00:02:39 GMT 1970 upgrade: Sending TERM to remaining processes ...
Thu Jan  1 00:02:43 GMT 1970 upgrade: Sending KILL to remaining processes ...
[  169.875189] stage2 (3160): drop_caches: 3
Thu Jan  1 00:02:49 GMT 1970 upgrade: Switching to ramdisk...
Thu Jan  1 00:02:50 UTC 1970 upgrade: Performing system upgrade...
grep: /sys/block/mmcblk*/mmcblk*p*/uevent: No such file or directory
grep: /sys/block/mmcblk*/mmcblk*p*/uevent: No such file or directory
Thu Jan  1 00:02:50 UTC 1970 upgrade: Upgrade completed
Thu Jan  1 00:02:51 UTC 1970 upgrade: Rebooting system...
umount: can't unmount[  171.765564] reboot: Restarting system