10.1. Appendix A: Latency Timer of the FTDI cable
If an external FTDI cable is used to burn the OTP (or to download the image into the external memory), the latency timer of the FTDI cable has to be changed from 15 ms to <10 ms.
To change the latency timer:
In the Windows Device Manager, expand the list of COM ports.
Right-click on the applicable COM port and select Properties.
In the Port Settings tab, click Advanced.
Set the Latency Timer to < 10 ms. See Figure 39.
Click OK and close the Device Manager.