USB wifi dongle not working on raspberry os [mt76x0u]

[Danilo Clemente]

I had the same issue as reported on this forum post https://www.raspberrypi.org/forums/viewtopic.php?t=281071

Trying to use an mt76x0u based USB dongle give the following error:
```
[ 6.721409] mt76x0u 1-1.2:1.0: ASIC revision: 76100002 MAC revision: 76502000
[ 6.724570] mt76x0u 1-1.2:1.0: mediatek/mt7610e.bin not found, switching to mediatek/mt7610u.bin
[ 6.724629] mt76x0u 1-1.2:1.0: Direct firmware load for mediatek/mt7610u.bin failed with error -2
[ 6.729700] mt76x0u: probe of 1-1.2:1.0 failed with error -2
````

The user MrEngman did find the reason for this bug:

```
Just thought I should explain the fix I used.

The mt7610 wifi driver is now included in RaspOS but it expects the wifi module firmware to be in a different directory to where it is currently installed. Why the wifi firmware directory has not been updated I don't know.

Anyway the commands in my previous post install the necessary wifi module firmware in the directory the wifi driver expects them to be in.

In the RaspOS the wifi module firmware is in directory /lib/firmware but it now needs to be in directory /lib/firmware/mediatek where the commands I used install it.

MrEngman
```

And had proposed a workaround:

```
I had similar problems getting the mt7610 wifi working on my Pi.

I managed to get it working using the following commands
Code: Select all

wget http://ftp.uk.debian.org/debian/pool/non-free/f/firmware-nonfree/firmware-misc-nonfree_20190114-2_all.deb
sudo dpkg -i firmware-misc-nonfree_20190114-2_all.deb
MrEngman
```

It would be good if this issue is fixed on the mainstream package.