
(notice, this test assumes you did NOT disable OTN_Updates from service-menu and so on ..)
If you are offered an upgrade the filter does NOT work .. (do NOT accept the upgrade)
If the menu is grayed out entirely, filter is working.
if menu is enabled, but update-scans takes forever and forever (never finishes), filter is working.
If you are informed that there is no available upgrade, you have got newest firmware .. and your filter failed
