ralink 148f:7601 wifi adaptor installation

sudo apt-get install linux-headers-generic build-essential git
sudo apt-get install git
git clone https://github.com/porjo/mt7601.git
cd mt7601/src
make
sudo make install
sudo mkdir -p /etc/Wireless/RT2870STA/
sudo cp RT2870STA.dat /etc/Wireless/RT2870STA/
sudo modprobe mt7601Usta

You have compiled the driver for your current kernel version only. When Update Manager installs a later linux-image, after the required reboot, you must re-compile:

cd mt7601/src
make clean
make
sudo make install
sudo modprobe mt7601Ust