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Yealink Forums » IP Phone Series » General topics v » V84.0.140, downgrade no longer possible?

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V84.0.140, downgrade no longer possible?
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Yisroel_MongoTEL Offline
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Post: #8
RE: V84.0.140, downgrade no longer possible?
They don't have this for most other phones, so your conspiracy-theory about backdoors doesn't make sense.

The lack of technical communication from Yealink is indeed frustrating. If they made such tough restriction at least say why! But communication is not a new issue from them Sad

It perfectly makes technical sense that an upgraded that changes something major low level in the firmware results in a restriction not to downgrade. I've seen it with other manufacturers as well (Fanvil Doorbells are a recent one that come to mind.)
01-12-2021 01:55 AM
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RE: V84.0.140, downgrade no longer possible? - Yisroel_MongoTEL - 01-12-2021 01:55 AM

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