before the files where deleted from Kwiirks page at wiibrew
there where 2 links
one file was cios_usb2_beta2bz27f500
the other boot,dol
it dont matter what one you downloaded
but if you downloaded cios_usb2_beta2bz27f500
then it would have to be renamed to boot.dol
before you could launch it with the hbc
they both do the same thing install cios_usb2
if you renamed cios_usb2_beta2bz27f500 to boot.dol
put that in a folder
then that in apps on sd card
launch hbc
it would of installed cios_usb2
there where 2 links
one file was cios_usb2_beta2bz27f500
the other boot,dol
it dont matter what one you downloaded
but if you downloaded cios_usb2_beta2bz27f500
then it would have to be renamed to boot.dol
before you could launch it with the hbc
they both do the same thing install cios_usb2
if you renamed cios_usb2_beta2bz27f500 to boot.dol
put that in a folder
then that in apps on sd card
launch hbc
it would of installed cios_usb2