Updates & Downloads

SW, TWIN23 OTA, TAM, AOER software version 3.10

as of August 6, 2025

Use Garmin Express to install this file.

(1.40 GB)

View system requirements

Notes:

• WARNING: If this software is uploaded to a device other than that for which it is designed, you will not be able to operate that device.
• If attempts to upload software fail, you may need to return the device to Garmin® for service.

System requirements

1. IBM-compatible PC running Windows 2000 or later operating system and an available USB port.