Yes you should be able to launch hackmii installer from postloader. Try the 1.# versions, but I don't think they will work for you. Assuming that v1 does not work, try the older 0.6 version to get bootmii installed into boot2. Not sure why the backup hbc would not work, it should. Almost sounds like your missing an ios, however the fix should have installed that for you, so it should not be an issue. I have little faith that you will be able to get the newer hackmii to install, the older one should without issue, get bootmii installed as boot2. I don't know why, but I have seen several older wiis that hackmii just does not like. Once you get bootmii installed into boot2, install priiloader and your cios and usbloaders and such, you do not need the hackmii installer. But if you wish to pursue it further, the next thing I would try is to downgrade ios36 to v1042 and see if the new hackmii will use it via trucha bug. It should, but I still don't think it will. Sounds like your almost there, have fun. Post back and I'll try to help any way I can.