What kernel version you're running? This can be checked with uname -a, also check is the kernel compiled with the bna module.
If you're using 3.10 or newer kernel you can use the 3.2.3 firmware, if older use the 3.2.11's.
If you're using 3.10 or newer kernel you can use the 3.2.3 firmware, if older use the 3.2.11's.