How to decrease USB speed?

Colibri V50 is still running at HighSpeed after I edit the registry according to these instructions:

Output from USB Analyzer 4.0 from Eltima on 4th line: Speed High Speed (up to 480 Mbps)

Dear @Gmul

Please refer to bug #33114 for Colibri VF50/VF61: In image 1.5 the polarity of the Highspeed setting was wrongly inverted.

I recommend to update the image to V1.6, where this was fixed. If you need to stay on image V1.5, change the setting to Highspeed=1 in order to reduce the speed to Full-Speed (12Mbps).

Regards, Andy