****AR9170 DEVICES SHOULD WORK OUT-OF-THE-BOX ON THE BackTrack 4 R2 Release****
If yours doesn't;
I noticed that the BackTrack 4 R2 iso doesn't have the one stage firmware, which is needed for the AVM FRITZ!WLAN USB Stick N and AVM FRITZ!WLAN USB Stick 2.4 and possibly others. So any one still having problems, see if you have ar9170.fw in /lib/firmware.
If you are missing it:
Download ar9170.fw and put it in /lib/firmware.
This applies to the original Backtrack4 release only.
The following devices with the atheros AR9170 chipset need the drivers updated to work correctly with BT4:
- Arcadyan - WN7512
- Atheros - 9170
- Atheros - TG121N
- AVM - FRITZ!WLAN USB Stick N
- AMV - FRITZ!WLAN USB Stick N 2.4
- Cace - Airpcap NX
- D-Link - DWA 160A1
- D-Link - DWA 160A2
- IO-Data - WNGDNUS2
- Netgear - WNDA3100
- Netgear - WN111 v2
- Planex - GWUS300
- Sphairon - Homelink 1202
- TP-Link - TL-WN821N v2
- Z-Com - UB81 BG
- Z-Com - UB82 ABG
- Zydas - ZD1221
- Zyxel - NWD271N
Here is how to update the drivers:
Download ar9170.fw, ar9170-1.fw, ar9170-2.fw and put them into /lib/firmware
Open a terminal and run:
*If you get a "No such file or directory" error when you run make, run this command:
tar -xf /root/compat-wireless-18.104.22.168.tar.bz2
Open /etc/modprobe.d/blacklist with any text editor and add blacklist arusb_lnx to the list and save the file.
ln -s /usr/src/linux /lib/modules/22.214.171.124/build