To check the firmware version of the Mixer Amp and microphones connected to it, serial commands can be sent to the RS-232 port using a Vaddio Loader software. Typing 5202 followed by the port number (00 for mic 1, 01 for mic 2) will return the microphone's firmware version. The document also lists available commands for getting and setting various status and control parameters of the Mixer Amp such as mute, volume, gain, and enabling serial echo. Error responses are provided if an unknown command or invalid argument is given.

1. Mixer Amp and Microphone Upgrade
To Check Mixer Amp Firmware version:
Connect to RS232 port on rear of Mixer Amp. (All dips are down on Amp) and use 1001 adapter to serial
connection.
Use Vaddio Loader and Select Audio and choose Mixer Amp.
Go to Serial Commands under “File”
Check ASCII Command and type in a Question Mark (?)

2. Mixer Amp and Microphone Upgrade
To get mic f/w version:
Type 5202 00 (for mic port 1) – Type 5202 01 to get f/w from mic port 2.
Below is the listed version on mic port 1 which is version 01.06
Below are the commands currently available.
EasyUSB MixerAmp v1.00.05 Jul 23 2012 12:48:03
Command Response
Description:
5101 - 4101 xx
Get mute status (xx: 00-off, 01-on)
5102 - 4102 xx
Get playback volume (xx: 00..58 in .5dB steps)
5103 - 4103 xx
Get mic gain (xx: 00..29 in 1dB steps)
5200 - 4200 01 xx yy zz Get device ID (01 for MixAmp, version xx.yy.zz)
5201 - 4201 mm rr pp Get all (mute mm, recgain rr, pbvolume pp)
5202 xx - 4202 mm yy zz Get mic ID (xx: 00-mic1, 01-mic2; mm: 01-MicT, 02-MicC; yy.zz is mic fw ver)
5203 - 4203 xx
Get Mixer Amp error code (xx: 00-none, >00 error code)
6101 xx - 4100 xx
Set mute status (xx: 00-off, 01-on)
6102 xx - 4100 xx
Adjust playback volume 3dB (xx: 00-down, 01-up)
6103 xx - 4100 xx
Adjust mic gain 1dB (xx: 00-down, 01-up)

3. Mixer Amp and Microphone Upgrade
6121 xx - 4100 xx
Enable serial echo (xx: 00-off, 01-on)
Error Responses:
4199
Unknown command
4198
Invalid argument

4. Mixer Amp and Microphone Upgrade