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T58A - Video calls with Teams
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complex1 Offline
3CX Adv. Cert. Engineer

Posts: 1,158
Joined: Jan 2014
Reputation: 33
Post: #12
RE: T58A - Video calls with Teams
(04-15-2020 08:57 AM)itpino Wrote:  Hello, is it possible to downgrade from the Teams firmware?
The manual says that if I have a permanent license, it not allowed to downgrade. But the phone come with a Open SIP firmware and upgraded to Teams and order a permanent license over Yealink Portal.

After flashing on Teams Firmware, I found out over the forum, the video call doesn't work Angry
So I downgraded from the Teams firmware back to the Open SIP firmware and now it hangs on the Yealink Logo with black background.
Beacause I will returned it back.


I think the best you can do is open a support ticket @ Yealink and ask if they can help.

Kind regards,

I am not an employee of Yealink.
Dutch is my native language, not English. Apologies for my imperfect grammar.
Please do not send unsolicited PM messages. I will not answer them.
04-15-2020 09:18 AM
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Messages In This Thread
RE: T58A - Video calls with Teams - TamTam - 02-26-2020, 09:18 PM
RE: T58A - Video calls with Teams - CyB0rg - 03-25-2020, 08:33 PM
RE: T58A - Video calls with Teams - tarkan - 04-07-2020, 09:42 PM
RE: T58A - Video calls with Teams - tarkan - 04-08-2020, 09:18 AM
RE: T58A - Video calls with Teams - CyB0rg - 04-08-2020, 02:12 PM
RE: T58A - Video calls with Teams - itpino - 04-15-2020, 08:57 AM
RE: T58A - Video calls with Teams - complex1 - 04-15-2020 09:18 AM
RE: T58A - Video calls with Teams - NezarH - 04-20-2020, 09:35 PM

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