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T57W on firmware
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call central Offline
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Joined: Dec 2022
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Post: #1
T57W on firmware
I have a client that has a bunch of T57W's and their firmware version is on

They are on 3CX, i'm not sure how they ended up on this version as the latest version on 3CX is and the latest version on the yealink site is

Some of the functions of the phone when on this newer firmware dont seem to play nice with 3CX (the DND key isnt working).

I think possibly the vendor we bought them from sent them with this firmware.

Anyway, can i roll these phones back to firmware without causing an issue such as bricking the phones?
12-14-2022 09:04 PM
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T57W on firmware - call central - 12-14-2022 09:04 PM

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