Hi Dan,
Looks like we have to give up for upgrading firmware.
my original issue is *sometimes* my camera shows offline, I am using hikconnect android APP. So I thought maybe if upgrade firmware it may help to resolve the issue.
I googled a lot, tried almost all the possible things, not able to resolve it.
note: while hikconnect shows cameras offline, at that time internet connection is stable, and from the web I see hikconnect status showing "online".
for the phone internet, when the issue happens, tried/switched to 3 different internet providers.
So. Don't know how to resolve that issue.
Any suggestion/recommendation highly appreciated.
Thanks,
Hayk