I had trouble updating the FW on the Traxis 3500 using my laptop. I gave up and tried using
a deskktop PC and it worked. I don't know what the issue is , but I just use the desktop PC for all firmware updates.
You might have to change the COM port speed/ buffer size or other settings to get it to work on the other computer.
Check the settings in the Device Manager under the COM Port.
Fred I updated the software in that Traxis I sold you, and it took at LEAST 25 minutes with a laptop using a USB-serial adpator. I think its a Traxis issue myself.
I'm glad y'all got it going, I wish I liked the Traxis, I just didn't.
I downgraded and updated it at least 3 times per instructions from DMSI using the laptop serial port with no issues. None of the times took more than 5 minutes.