I am going to upgrade my DIR-628 to version 1.20, the release note says "Note: This firmware does not allow downgrading to pre-1.2x. Please save your configuration file before the upgrade. After the upgrade, please reset to factory default, then upload the configuration file image." Is this true in practice?
I would like to find out peoples' experience of upgrading and using the configuration file from version 1.13. I have lot of MAC filters and port forwarding information to enter and do not feel like entering them again. Can the configuration file used for Version 1.22NA?
Thanks in advance.