MT7662U not working

we have some problems with a usb wifi module HC-M7662BU1 with MTK chipset MT7662U.
The device is recognized as usb (i.e. lsusb shows Bus 001 Device 007: ID 0e8d:7632 MediaTek Inc. ) but, even though mt76x2u driver is loaded, the module is not recognized as a wireless interface.
We also checked that the firmwares mt7662.bin and mt7662_rom_patch.bin are present in /lib/firmware and dmesg shows only the following:

[   72.219555] usb 1-1.4: new high-speed USB device number 7 using dwc_otg
[   72.249720] usb 1-1.4: New USB device found, idVendor=0e8d, idProduct=7632, bcdDevice= 1.00
[   72.263982] usb 1-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[   72.274412] usb 1-1.4: Product: BT+WIFI
[   72.281279] usb 1-1.4: Manufacturer: MediaTek Inc.
[   72.289069] usb 1-1.4: SerialNumber: 000000000

Any idea of what could be the issue?

Does "iw list" show it?

No, it wasn't. The patch proposed here is solving the issue. thank you!

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