G90_MainUnit_FW_V1.78b2021123101 FW Release Notes           DATE: 2021.12.31

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MainUnit: G90_MainUnit_FW_V1.78b2021123101
DispUnit: G90_DispUnit_FW(stdcm3)_V1.77b2021032102


Note: This update is only for the firmware of the Main Unit.
          The display unit firmware must be version 1.77b.  This update will not work with earlier display unit FW versions.
          Be sure to upgrade the MainUnit and DispUnit firmware at the same time.

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Release Notes:

1. Modified receive audio filter to improve sound quality and suppress high-frequency noise artifacts
2. Improved the AGC algorithm to eliminate spike noise generated by it.
3. Improved the precision of volume adjustment, the volume value of 0-26 is stepped to 1dB, and the volume value of 27-36 is stepped to 2dB.

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The updated version number is as follows (located in the tenth item of the system menu):
BASE: 1.78
Dec 31 2021,11:59:24

APP: 1.77
Mar 21 2021,15:31:07