After reading lsusb on my LimeNET CM3 RPI figured out that modification with R96 and R97 is necessary,

After opening the RF shield case, here some surprise:

Both resistors are already there!?

Question to Zack may assist my efforts, now waiting :)

https://discourse.myriadrf.org/t/gps-on-usb/4670/7?u=9a4db