Thanks for all the comments. I took the plunge (always afraid of bricking my processor ...) and used my €2 USBasp (bought on e-Bay by some French electronics outlet, which happens to have fast delivery with the lowest shipping cost) onto my QCX. My programmer had a 3.3/5V voltage jumper, so by taking it off there was no supply voltage available from programmer side.
I downloaded Extreme Burner AVR (). This is a brilliant, ultra simple program which co-installs THE USBlLIB0 DRIVERS !!! (in Win7 just tell Windows to install these despite them being unsigned, In Win8 and up you have to go the extra mile to get this done, see other posts and Google).
Fired up the program, fired up QCX, put the programmer in the USB slot of the PC and finally connected it to the QCX. Then, for testing, I started to read the Flash memory to check whether the communication was OK. Then loaded the 1.00d hex file, and chose 'write flash'. BE CAREFUL HERE AND DO NOT PUSH THE 'WRITE ALL' BUTTON as you will write the EEPROM as well and maybe even the fuses with the default values of the program. In particular that last one you will not want ...
Loosing the EEPROM content is just unhandy. I guess you have to re-program all settings. But better to prevent this ...
The write process takes only 30 sec or so.
Checked the CW-R (LSB) setting and yes it works now ! Thanks Hans for this fix.
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Regards/73,
Enno, PF5X
Enno Korma, PF5X