ftup -a
WARNING: JFFS is enabled.
Make sure you have a backup of its content as
it is not guaranteed the content of JFFS
will be preserved after a firmware upgrade.
Auto unmount JFFS during upgrade is enabled.
JFFS will be stopped and unmounted
To cancel press CTRL+C
Stopping JFFS... Unable to unmount JFFS
ERROR: Upgrading firmware with JFFS enabled is not possible. Optionally you can enable 'Unmount JFFS during upgrade' in the webUI in 'Administration > Admin Access'
