In the directory which you installed FDT, there will be a file called "FDTAdvancedSetup.exe". You can use this file to adjust the delays sent by FDT.
Essentially, a USB connection is way quicker than a serial connection and as such, sometimes your connection will be too quick for the software. The connection gets ahead of the instructions and the instructions get lost resulting in time outs.
So, back to FTDAdvancedSetup... go into this, you will see two boxes you can click on: "connection settings" and "configure serial port...". Click the "configure serial port..." box. In here, you will see a box "enable serial port delay fix". You want to make sure that's checked. Then where it says delay value, enter 1000 or something (1000 worked for me, you may need to go higher depending on the cable). Disregard where it says the lower the value the better, that doesn't really apply to us as we're just downloading the file, not doing live programming.
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