I have tested the new driver and I have to say it is excellent.
The following devices work correctly:
-Technotrend USB2 S-2400 satellite TV tuner,
-Technotrend USB2 S2-3600 satellite TV tuner,
-Technotrend USB2 S2-3650 satellite TV tuner,
-Nokia E52 phone.
(My Logitech C905 webcam has worked perfectly since driver version 0.98.)
The only device which has failed the test it is the one equipped with the famous JMicron chip:
Silicon Power Armor A80 USB 3.0 HDD (with JMicron JMS539 chip)
I tend to believe this is due to design flaws in the JMicron chip.
I have replaced this enclosure with another having an ASMedia chipset, which works flawlessly.
I have to thank to EtronTech, Asrock and to you Ket for your help.

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