Centre county Pennsylvania, USA | Trimble's EZsteer 500 system has two components (hardware boxes) that are firmware upgradable, EZSteer box and EZGuide box. Connection for firmware upgrades to those boxes are different:
(1) EZSteer box firmware upgrade connection is serial cable connected to serial (dB9) connector pigtail in EZSteer box wiring harness.
(2) EZGuide box firmware upgrade connection is USB stick plugged into USP port on back of EZGuide box.
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