Hello,
we're facing problems downloading / starting bootstream on i.MX8QuadMax using uuu.Downloading the boot image always terminates with LIBUSB_ERROR_TIMEOUT
sudo ./uuu/uuu -b spl flash.bin
uuu (Universal Update Utility) for nxp imx chips -- libuuu_1.3.63-0-gea1d1ee
Success 0 Failure 1
1:15 1/ 1 [HID(W):LIBUSB_ERROR_TIMEOUT ] SDPS: boot -f flash.bin
You need to try with a USB 2.0 port, Since only USB2.0 high-speed mode instead of super speed mode it is supported in UUU