Ubuntu – Installing USR 5422 on Ubuntu 12.04

Did you setup your passphrase with wpa_passphrase? e.g

%> wpa_passphrase SSID passphrase
network={
        ssid="SSID"
        #psk="passphrase"
        psk=28964ba6ea8b8f3a0db1c4414b327da253d0af5d4f4adccec0f8abf5b05b10f8
}

Otherwise wpa_supplicant -B -i [wireless device] -c /etc/wpa_supplicant/cli.conf won't work at all

According to your link the filename of the driver should be mt7601Usta.ko (.ko is the extension for kernel modules).

Kernel modules are usually installed in /lib/modules/$(uname -r), so use find /lib/modules/$(uname -r) -name mt7601Usta.ko then sudo rm to delete it if you're sure it is the right module (or mv to move it out from the modules tree so it won't be loaded on next boot).

But probably you'll need to unload the module before.

You can use lsmod command to see currently loaded modules and rmmod to unload a module for the current session (it would be loaded again on next boot), names from lsmod doesn't always correspond to filenames.

With lsmod results you can use modinfo command to get informations about the module (ie: modinfo <modulename>)

Depending on the distro you're using you may be able to blacklist adding a line in /etc/modprobe.d/blacklist.conf so it won't be loaded on boot

blacklist mt7601Usta

Add a new file if blacklist.conf doesn't exist

sudo sh -c 'echo "blacklist mt7601Usta" >/etc/modprobe.d/no-mt7601Usta.conf'

You can also blacklist it from the kernel command line (ie: grub bootloader)

modprobe.blacklist=mt7601Usta