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Yealink Forums » IP Phone Series » General topics » How do I request a SIP licence (to "downgrade" from SFB firmware)?

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How do I request a SIP licence (to "downgrade" from SFB firmware)?
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jaimet2 Offline
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How do I request a SIP licence (to "downgrade" from SFB firmware)?
Hi.

I have a T41S which is currently running an SFB (Skype for business) firmware v66.9.0.80, and I would like to downgrade to a standard SIP firmware (I believe the downgrade to a standard SIP firmware is necessary to be able to configure the phone with "standard" SIP providers).

I have already tried to flash the new firmware using the Settings/Upgrade page but despite there showing no errors, the firmware version remains unchanged.

I have now read in several forum posts that I should upload a SIP licence to the phone before attempting to flash the standard firmware. Could anyone please confirm whether my understanding is correct and, if yes, how do I request this SIP licence?

Many thanks, Jaime
04-15-2024 01:15 AM
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How do I request a SIP licence (to "downgrade" from SFB firmware)? - jaimet2 - 04-15-2024 01:15 AM

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