up2date problem with FC4test3: header.info not found

[guger]

Hello, I downloaded both the DVD iso images of FC4test3 (32 and 64 bit) and installed them on my ThinkPad and a desktop PC with an Athlon processor. up2date does not work: it tries to access http://.../pub/fedora/linux/core/development/$ARCH//headers/header.info ($ARCH = i386 or x86_64) withouth succeeding. How do I fix this? Why is headers/header.info missing in the development channel? Should I switch to the test channel instead? Must I edit /etc/sysconfig/rhn/sources to do this? Thanks, Guido

[SlowJet]

use yum
but first
yum update yum

[guger]

Thanks, yum works (I had never used it before), but up2date remains broken after the yum update,
because it still looks for the nonexisting headers/header.info file.