Thank you Yealink for the new firmware

 As for a long time I have been using Yealink WH66. Last week we got a new firmware. And what a change.

It's not perfect, but way much better than before. So here comes the highlights of the new firmware:

Music Mode

Volume Adjustment of Base

Multi EQ Modes

Hear the reality and the clarity

You will get the frimware from Yealink USB Connect who you can download from here.