how to update source tree without cvs?

[yew chin]

hell all, i have freebsd 4.7 but due to the firewall
configuration in my school, i can't be able to cvsup.
if i want to upgrade to 4.8 or update all the security
patch?
what should i need to do?
is there anyway to update the src and ports
application without using cvsup?
thanks for looking and answering.
 From: Chin

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