I pass the update 7.0.1.00200 to 7.0.1.00300
shell
rm /etc/applmgmt/appliance/software_update_state.conf
renew the update scan, download update, apply update.
Wait long minute in dark, no progression view in VCSA Console, but the update pass in background.
We can see in syslog in ssh some mouvement operation.
VCSA restart, and you are un 7.0.1.00300 !
tested in non-production environnement, for observing the stability before apply in production