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Problem Change Firmware T48s from SFB to SIP
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kumagera Offline
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Post: #3
RE: Problem Change Firmware T48s from SFB to SIP
(01-10-2022 08:04 AM)jeff.smith@singlesrc.com Wrote:  
(11-18-2021 08:01 PM)Lars Maschke Wrote:  Dear Community,

I tried the new firmware 66.9.0.100 for "Skype for Business" on T48s.

This was just for trying SFB. I can't reset the phone to the normal SIP-Version firmware 66.86.0.15. This does not work. There is still the SFB-version installed.

How can I change this behavior?

Thanks in advance
Lars



Did you ever figure anything out? I'm running into the same thing.


I had the same issue with a T42s - successfully reverted back to SIP from SFB using these instructions from Yealink.

https://support.yealink.com/en/portal/kn...0471180dd1
01-14-2022 10:22 AM
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RE: Problem Change Firmware T48s from SFB to SIP - kumagera - 01-14-2022 10:22 AM

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