M2 Model 525 G3000 Avionics System
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The Garmin G3000 has one of two potential software versions installed in the system on M2 aircraft. There are differences in the software and configuration loading, so it is important to choose the correct version. The new version of software (1592-20) was introduced by service bulletin SB525-34-89 for aircraft in the field.

The version of software can be verified by going to the touch controller, going to Utilities, then Setup, then Avionics Status, then the Airframe tab on the left side of the screen. The software level will be shown as SYS SW Vers. 1592.10 or 1592.20 as in the image below.