Connect your amp to your computer, enter the firmware update section of this site, and start update procedure. If your amp is up to date, you see the message.

Here is another way to check the firmware version:

1. Turn your amp off.

2. Press simultaneously PRE FX, MOD and REV.

3. Holding down the buttons mentioned above turn your amp on. The display should read M1.41

Press simultaneously PRE FX, MOD and REV. 

Erin Frank 

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