I am trying to upgrade SPA 504G using the utility that is bundled in the package, from computer which is connected on its LAN port (same subnet). Current version is 7.4.8 and tying to upgrade to latest 7.5.1
I can open the GUI, ping it, but this utility is giving error "Upgrade Failed: No Response from SPA".
Is there an option which needs to be enabled through GUI ? Or is there any other way tp upgrade it. This phone is connected with a service provider and reason for upgrade is that its loosing registrations. Not sure if upgrade will help in fixing the registration lost problem.
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