I tried the both software version Flirc-3.20.0 linux and win with WIne but as the device is acknowledged by the system, Flirc and flirc_util see it as unconnected.
[ 7158.975320] usb 1-7.4: new low-speed USB device number 16 using xhci_hcd
[ 7159.233417] usb 1-7.4: New USB device found, idVendor=20a0, idProduct=0001, bcdDevice= 1.00
[ 7159.233428] usb 1-7.4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 7159.233434] usb 1-7.4: Product: flirc
[ 7159.233439] usb 1-7.4: Manufacturer: flirc.tv
[ 7159.298916] input: flirc.tv flirc Keyboard as /devices/pci0000:00/0000:00:02.1/0000:01:00.0/usb1/1-7/1-7.4/1-7.4:1.0/0003:20A0:0001.000E/input/input31
[ 7159.355470] hid-generic 0003:20A0:0001.000E: input,hidraw4: USB HID v1.01 Keyboard [flirc.tv flirc] on usb-0000:01:00.0-7.4/input0
I just have read here that the last Flirc software version for Flirc USB Gen1 is v3.12.00
So this is that I a looking for.