The doc references http://www.ibiblio.org/pub/Linux/distributions/gentoo/releases/build/1.4_rc1/sparc/stage1-sparc64-1.4_rc1.tbz2, but this is an invalid URL. The URL should be http://www.ibiblio.org/pub/Linux/distributions/gentoo/releases/1.4_rc2/sparc/sparc64/stage1-sparc64-1.4_rc2.tbz2.
fixed in the cvs