Can't upgrade FC1

[Mike Adolf <mlnx dialup4Less com>]

Tried to upgrade FC1 to latest release, but...

up2date says core is up to date but 
uname -r = 2.4.22-1.2115.nptl, 
which is old.

yum update (after downloading all headers) gives
 
Traceback (most recent call last):
  File "/usr/bin/yum", line 60, in ?
    yummain.main(sys.argv[1:])
  File "yummain.py", line 188, in main
  File "clientStuff.py", line 766, in get_package_info_from_servers
  File "clientStuff.py", line 103, in HeaderInfoNevralLoad
ValueError: unpack list of wrong size

How else can I update?

Mike