raspberry pi zero and SLOW USB HID

[Wojciech Puchar]

>> When running on raspberry pi - in spite of total CPU load is far less than
>> 5% - it is slow. all hid_read_timeout works properly but
>> way too slow. every read takes like 10 times more time.
>>
>> what is needed to fix this?
>>
>
> I think a RPI firmware upgrade is needed. I don't know if our port has been
> updated yet.

you mean what firmware? how can i do it?