FIRMWARE UPDATE : libUSB Error: No such device (it may have been disconnected): (-4)

[ybouss]

Steps to reproduce

1. plug the antena
2. connect pin 1 an 3 to enter DFU mode
3. download latest firmware issue ( at the time I write this issue it is https://github.com/greatscottgadgets/ubertooth/releases/download/2020-12-R1/ubertooth-2020-12-R1.tar.xz )
4. run ubertooth-dfu -d bluetooth_rxtx.dfu -r

Expected behaviour

flashing new firmware

Actual behaviour

All led are blue, the four connected led are doing a repeating chasing pattern, the USB LED is blinking every seconds approximately, and the following messages appears :

 Switching to DFU mode...
Checking firmware signature
........................................
........................................
........................................
........
libUSB Error: No such device (it may have been disconnected):  (-4)

Version information

Operating system: Ubuntu 22.04

have someone the same issue ? if so How do you resolve it ? is it an unsolvable hardware issue or can I do something ?Thank you in advance.