[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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yealink t21p need help
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eli1511 Offline
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Posts: 3
Joined: May 2016
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Post: #1
yealink t21p need help
hello
i have 25 phone with firmware: 21.70.18.1
hardware: 17.0.0.36
i try to upgrade to 34.71.0.90 or 34.72.0.20 or 34.71.0.76 but is dont work .
its tell me the opretion is sucess but dont realy upgrade.
do you have any idea how to help me.

tanks you and sorry for the eng.
05-03-2016 03:35 PM
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Messages In This Thread
yealink t21p need help - eli1511 - 05-03-2016 03:35 PM
RE: yealink t21p need help - Karl_Yealink - 05-05-2016, 05:53 AM
RE: yealink t21p need help - eli1511 - 05-05-2016, 10:05 PM

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