oh, i didn't bother trying them. they all say 0 Bytes, so i didn't bother.
do you guys all use the amd64 version on newer laptop hardware, or do you stick with x86?
i'm going to give 9.2-RC1 amd64 a try on my x200s.
They're all symbolic links:
lftp ftp.freebsd.org:/pub/FreeBSD/releases/ISO-IMAGES/9.0> ls
total 0
lrwxr-xr-x 1 1006 1006 45 Jan 5 2012 CHECKSUM.MD5-amd64 -> ../../amd64/amd64/ISO-IMAGES/9.0/CHECKSUM.MD5
lrwxr-xr-x 1 1006 1006 43 Jan 5 2012 CHECKSUM.MD5-i386 -> ../../i386/i386/ISO-IMAGES/9.0/CHECKSUM.MD5
lrwxr-xr-x 1 1006 1006 43 Jan 5 2012 CHECKSUM.MD5-ia64 -> ../../ia64/ia64/ISO-IMAGES/9.0/CHECKSUM.MD5
lrwxr-xr-x 1 1006 1006 49 Jan 5 2012 CHECKSUM.MD5-powerpc -> ../../powerpc/powerpc/ISO-IMAGES/9.0/CHECKSUM.MD5
lrwxr-xr-x 1 1006 1006 51 Jan 5 2012 CHECKSUM.MD5-powerpc64 -> ../../powerpc/powerpc64/ISO-IMAGES/9.0/CHECKSUM.MD5
lrwxr-xr-x 1 1006 1006 49 Jan 5 2012 CHECKSUM.MD5-sparc64 -> ../../sparc64/sparc64/ISO-IMAGES/9.0/CHECKSUM.MD5
lrwxr-xr-x 1 1006 1006 48 Jan 5 2012 CHECKSUM.SHA256-amd64 -> ../../amd64/amd64/ISO-IMAGES/9.0/CHECKSUM.SHA256
lrwxr-xr-x 1 1006 1006 46 Jan 5 2012 CHECKSUM.SHA256-i386 -> ../../i386/i386/ISO-IMAGES/9.0/CHECKSUM.SHA256
lrwxr-xr-x 1 1006 1006 46 Jan 5 2012 CHECKSUM.SHA256-ia64 -> ../../ia64/ia64/ISO-IMAGES/9.0/CHECKSUM.SHA256
lrwxr-xr-x 1 1006 1006 52 Jan 5 2012 CHECKSUM.SHA256-powerpc -> ../../powerpc/powerpc/ISO-IMAGES/9.0/CHECKSUM.SHA256
lrwxr-xr-x 1 1006 1006 54 Jan 5 2012 CHECKSUM.SHA256-powerpc64 -> ../../powerpc/powerpc64/ISO-IMAGES/9.0/CHECKSUM.SHA256
lrwxr-xr-x 1 1006 1006 52 Jan 5 2012 CHECKSUM.SHA256-sparc64 -> ../../sparc64/sparc64/ISO-IMAGES/9.0/CHECKSUM.SHA256
lrwxr-xr-x 1 1006 1006 71 Jan 5 2012 FreeBSD-9.0-RELEASE-amd64-bootonly.iso -> ../../amd64/amd64/ISO-IMAGES/9.0/FreeBSD-9.0-RELEASE-amd64-bootonly.iso
lrwxr-xr-x 1 1006 1006 68 Jan 5 2012 FreeBSD-9.0-RELEASE-amd64-disc1.iso -> ../../amd64/amd64/ISO-IMAGES/9.0/FreeBSD-9.0-RELEASE-amd64-disc1.iso
lrwxr-xr-x 1 1006 1006 67 Jan 5 2012 FreeBSD-9.0-RELEASE-amd64-dvd1.iso -> ../../amd64/amd64/ISO-IMAGES/9.0/FreeBSD-9.0-RELEASE-amd64-dvd1.iso
lrwxr-xr-x 1 1006 1006 71 Jan 5 2012 FreeBSD-9.0-RELEASE-amd64-memstick.img -> ../../amd64/amd64/ISO-IMAGES/9.0/FreeBSD-9.0-RELEASE-amd64-memstick.img
lrwxr-xr-x 1 1006 1006 68 Jan 5 2012 FreeBSD-9.0-RELEASE-i386-bootonly.iso -> ../../i386/i386/ISO-IMAGES/9.0/FreeBSD-9.0-RELEASE-i386-bootonly.iso
lrwxr-xr-x 1 1006 1006 65 Jan 5 2012 FreeBSD-9.0-RELEASE-i386-disc1.iso -> ../../i386/i386/ISO-IMAGES/9.0/FreeBSD-9.0-RELEASE-i386-disc1.iso
lrwxr-xr-x 1 1006 1006 64 Jan 5 2012 FreeBSD-9.0-RELEASE-i386-dvd1.iso -> ../../i386/i386/ISO-IMAGES/9.0/FreeBSD-9.0-RELEASE-i386-dvd1.iso
lrwxr-xr-x 1 1006 1006 68 Jan 5 2012 FreeBSD-9.0-RELEASE-i386-memstick.img -> ../../i386/i386/ISO-IMAGES/9.0/FreeBSD-9.0-RELEASE-i386-memstick.img
lrwxr-xr-x 1 1006 1006 68 Jan 5 2012 FreeBSD-9.0-RELEASE-ia64-bootonly.iso -> ../../ia64/ia64/ISO-IMAGES/9.0/FreeBSD-9.0-RELEASE-ia64-bootonly.iso
lrwxr-xr-x 1 1006 1006 64 Jan 5 2012 FreeBSD-9.0-RELEASE-ia64-memstick -> ../../ia64/ia64/ISO-IMAGES/9.0/FreeBSD-9.0-RELEASE-ia64-memstick
lrwxr-xr-x 1 1006 1006 67 Jan 5 2012 FreeBSD-9.0-RELEASE-ia64-release.iso -> ../../ia64/ia64/ISO-IMAGES/9.0/FreeBSD-9.0-RELEASE-ia64-release.iso
lrwxr-xr-x 1 1006 1006 77 Jan 5 2012 FreeBSD-9.0-RELEASE-powerpc-bootonly.iso -> ../../powerpc/powerpc/ISO-IMAGES/9.0/FreeBSD-9.0-RELEASE-powerpc-bootonly.iso
lrwxr-xr-x 1 1006 1006 73 Jan 5 2012 FreeBSD-9.0-RELEASE-powerpc-memstick -> ../../powerpc/powerpc/ISO-IMAGES/9.0/FreeBSD-9.0-RELEASE-powerpc-memstick
lrwxr-xr-x 1 1006 1006 76 Jan 5 2012 FreeBSD-9.0-RELEASE-powerpc-release.iso -> ../../powerpc/powerpc/ISO-IMAGES/9.0/FreeBSD-9.0-RELEASE-powerpc-release.iso
lrwxr-xr-x 1 1006 1006 81 Jan 5 2012 FreeBSD-9.0-RELEASE-powerpc64-bootonly.iso -> ../../powerpc/powerpc64/ISO-IMAGES/9.0/FreeBSD-9.0-RELEASE-powerpc64-bootonly.iso
lrwxr-xr-x 1 1006 1006 77 Jan 5 2012 FreeBSD-9.0-RELEASE-powerpc64-memstick -> ../../powerpc/powerpc64/ISO-IMAGES/9.0/FreeBSD-9.0-RELEASE-powerpc64-memstick
lrwxr-xr-x 1 1006 1006 80 Jan 5 2012 FreeBSD-9.0-RELEASE-powerpc64-release.iso -> ../../powerpc/powerpc64/ISO-IMAGES/9.0/FreeBSD-9.0-RELEASE-powerpc64-release.iso
lrwxr-xr-x 1 1006 1006 77 Jan 5 2012 FreeBSD-9.0-RELEASE-sparc64-bootonly.iso -> ../../sparc64/sparc64/ISO-IMAGES/9.0/FreeBSD-9.0-RELEASE-sparc64-bootonly.iso
lrwxr-xr-x 1 1006 1006 74 Jan 5 2012 FreeBSD-9.0-RELEASE-sparc64-disc1.iso -> ../../sparc64/sparc64/ISO-IMAGES/9.0/FreeBSD-9.0-RELEASE-sparc64-disc1.iso
i see.
turns out that my x200s has rtl8192se pci-x wifi, so it's some ndis crap. i'll try again once i install a wifi card with an open driver. i refuse to use ndis crap.
i guess i'll buy myself an atheros AR5BXB72 for $10. seems like the best bet for 802.11n on freebsd.