Updates & Downloads

SW, TWIN25 OTA, AOER software version 2.50

as of February 2, 2026

Use Garmin Express to install this file.

(1.50 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

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