I've installed iwi-firmware-3.0.tgz per the iwi manpage, & adjusted the
group associated with the four installed files to match that of everything
else in the directory:

$ ls -al /etc/firmware/iwi*
-rw-r--r--  1 root  bin  191142 Mar 26  2006 /etc/firmware/iwi-bss
-rw-r--r--  1 root  bin  185660 Mar 26  2006 /etc/firmware/iwi-ibss
-rw-r--r--  1 root  bin   12007 Mar 26  2006 /etc/firmware/iwi-license
-rw-r--r--  1 root  bin  187836 Mar 26  2006 /etc/firmware/iwi-monitor
$

The wireless device appears to be recognized correctly in dmesg:

$ dmesg | grep iwi0
iwi0 at pci3 dev 2 function 0 "Intel PRO/Wireless 2915ABG" rev 0x05: irq 11,
address 00:0e:35:e2:af:6f
$

However, at boot I'm receiving these errors at the console:

iwi0: fatal firmware error
iwi0: device configuration failed

I'm running the 24 June snapshot of -current:

$ sysctl kern.version
kern.version=OpenBSD 4.1-current (GENERIC) #309: Sun Jun 24 00:56:12 MDT
2007
    deraadt@i386.openbsd.org:/usr/src/sys/arch/i386/compile/GENERIC
$

So, have I missed something to correctly configure this device?

Thanks.