MD5
cromwell.bin -- 256KB Cromwell to flash into modchip.
cromwell_1024.bin -- 1MB Cromwell for an older Xbox or modchip.
ethboot.bin -- Cromwell 2.41-dev that you can netboot from Cromwell 2.40 (and maybe earlier) if you need it.
netbsd.bin -- 2007-jan-06 kernel with no PHY and video detection. Should work on all Xbox revisions.
xromwell.xbe.bin -- Cromwell you can boot from a soft-mod dashboard.