DFR0524 5.5" OLED Touch Screen V2.0 - Controller not detected

Hi,
Finally had one of these delivered from Mouser Electronics.
I have followed the Wiki https://wiki.dfrobot.com/5.5%20Inches%2 ... %20DFR0524 re. connection to a Raspberry Pi
The display works fine, but I cannot get the touch function to work. The device doesn't even appear in the output of the lsusb command on the Pi or any other computer.
I tried the instructions for shorting the "boot" jumper in order to flash the firmware however that doesn't make any difference. Even the flash tool says it can't find a device to program.
Can anyone confirm whether I have done something wrong, or should I just return it to Mouser as faulty?
Finally had one of these delivered from Mouser Electronics.
I have followed the Wiki https://wiki.dfrobot.com/5.5%20Inches%2 ... %20DFR0524 re. connection to a Raspberry Pi
The display works fine, but I cannot get the touch function to work. The device doesn't even appear in the output of the lsusb command on the Pi or any other computer.
I tried the instructions for shorting the "boot" jumper in order to flash the firmware however that doesn't make any difference. Even the flash tool says it can't find a device to program.
Can anyone confirm whether I have done something wrong, or should I just return it to Mouser as faulty?
2019-09-02 11:45:07 Never mind - seems the USB cable from the Pi to the Display was faulty. Fixed now.
brett
