Download and install the carl9170 firmware:
Fedora 15 carl9170 Firmware RPM
Fedora 16 carl9170 Firmware RPM
Fedora 17 carl9170 Firmware RPM
Fedora 18 carl9170 Firmware RPM
You may also need to do the following:
1. run (or use gtksu in place of kdesu if you have the gnome version)
kdesu kwrite /etc/modprobe.d/modprobe.conf
2. Add the follow to the end of the file:
blacklist ar9170usb off
3. Save
Alternatively:
If you have trouble connecting to your wireless network or find it flaky blacklist the old ar9170usb driver and install the newer carl9170 firmware instead.
1. run (or use gtksu in place of kdesu if you have the gnome version)
kdesu kwrite /etc/modprobe.d/modprobe.conf
2. Add the follow to the end of the file:
blacklist ar9170usb off
3. Save
4. Download carl9170 firmware to your downloads directory.
5. Open a terminal from F -> Applications -> System -> Terminal
Type the following and hit enter after each line
cd ~/Downloads
su
mv *carl9170* /lib/firmware