[YMCS/YDMP Free Trial Program]Yealink would like to offer Free Trial Program of Yealink device management service for our current eligible customers. You can see the details below.
https://www.yealink.com/ydmp-freetrial-2020


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Upgrade T28P firmware
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rlsabin Offline
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Posts: 61
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Post: #6
RE: Upgrade T28P firmware
I believe that they are saying that the only software version that you can upgrade to would be another version that was built was built for Crescendo ie the x.70.37.9. We run into the same problem with Yealink phones running Tadiran firmware the only upgrade that the phone will take is another Tadiran firmware. This is very frustrating as Tadiran approved firmware is probably 2 years behind what Yealink is using now. We pay more to use non Tadiran Yealink phones so we dont have to run their obsolete firmware.

Rick
12-25-2013 04:10 AM
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Messages In This Thread
Upgrade T28P firmware - fdtcloud - 12-20-2013, 12:28 AM
RE: Upgrade T28P firmware - fdtcloud - 12-24-2013, 12:52 AM
RE: Upgrade T28P firmware - fdtcloud - 12-25-2013, 02:27 AM
RE: Upgrade T28P firmware - rlsabin - 12-25-2013 04:10 AM

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