B11. What's The Downgrade Procedure Of Zywall 70 Running Zynos V4.01; B12. Can I Downgrade A Zywall 5 Or Zywall 35 Running Zynos V4.01 Back To Zynos V3.64 (Or Below); C. Turbo Card Faq - ZyXEL Communications ZyWall 35 Support Notes

ZyWALL 35 Support Notes
If the device is up and running with a ZyWALL Turbo Card inserted, the default setting is turned off. You
can manually enable the AV+IDP feature if you want.
However, if the ZyWALL Turbo Card is not present on the device, the check box is grayed and you will
not be able to enable the AV+IDP feature.
2. Default setting of Anti-Spam feature
The default setting of AS feature in ZyNOS v4.01 is disabled. You can manually enable the AS feature if
you want.
3. Default setting of Content Filtering feature
The default setting of CF feature in ZyNOS v4.01 is disabled. You can manually enable the CF feature if
you want.
B10. What happens to my original system configurations after a successful firmware
upgrade to ZyNOS v4.01?
The original system configurations, including systems settings, firewall policies and VPN rules, will be
fully reserved after the upgrade. However, we strongly recommend you to backup your ROM file prior to
upgrade.

B11. What's the downgrade procedure of ZyWALL 70 running ZyNOS v4.01?

You can directly downgrade the firmware of ZyWALL 70 from v4.01 to any of the following versions:
v4.00/v3.65/v3.64/v3.63/v3.62.
However, we don't guarantee all the system configurations can be fully converted and reserved after a
downgrade because some feature settings may not be available on older firmware versions.
Always backup your current ROM file prior to any firmware operation.
B12. Can I downgrade a ZyWALL 5 or ZyWALL 35 running ZyNOS v4.01 back to ZyNOS
v3.64 (or below)?
Yes, downgrade is supported.
However, we don't guarantee all the system configurations can be fully converted and reserved since
some feature settings may not be available on older firmware versions.

C. Turbo Card FAQ

C01. Can I insert the ZyWALL Turbo Card & wireless card simultaneously into ZyWALL 5,
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