OK, may replace the wiiflow boot.dol with that one:
https://dl.dropbox.com/u/25620767/test_isfs_stuff.7z
And see if it ends with sth like "Font at 80004020 with the size x", if it doesnt then something is wrong
Thank you for your time Fix, here is the result:
http://oi49.tinypic.com/1216anq.jpg
.. and then it boots back to HBC.