Updates & Downloads

TRANSPONDER (PC tool): GTX 3X5 software version 2.81b

as of August 10, 2023

Download (65.87 MB)

View installation instructions and system requirements

Notes:

• This software update is intended to be loaded on GTX 3X5 Transponders only.
  

Installation Instructions

1. The application requires Windows 2000, XP, Vista, Windows 7, or Windows 10. Mac computers are not supported.
2. Download TRANSPONDER_PCtool__GTX3X5_281.zip. Unpack, open, GTX_3X5_Software_Loading_Tool_Guide.pdf.
3. Follow instructions in the User's Guide (GTX_3X5_Software_Loading_Tool_Guide.pdf), beginning with Section 2, ''Installation''.

System requirements

1. IBM-compatible PC running Windows 2000 or later operating system and an available Com 1, 2, 3, or 4 port.
2. PC Interface Cable for your GPS unit. The PC Interface Cable may be purchased through your local Garmin distributor or ordered direct from our Online Store.