This question has been asked by many people already.  The easiest way is:

1) install the new version
2) copy all or the libraries that you installed later from the "library" folder 
of older version to the new version
3) uninstall the old version
4) do a library update in the new version

Done!

...Tao





________________________________
From: "Li, Yunfei" <yunfei_li@wsu.edu>
To: r-help@r-project.org
Sent: Thu, March 31, 2011 10:16:23 AM
Subject: [R] How to update R?

Hi,

My R version is old, and I would like to update it. How can I update R and keep 
all the libraries? Thanks

Best,

Yunfei Li
--------------------------------------------------------------------------------------

Research Assistant
Department of Statistics &
School of Molecular Biosciences
Biotechnology Life Sciences Building 427
Washington State University
Pullman, WA 99164-7520
Phone: 509-339-5096
http://www.wsu.edu/~ye_lab/people.html


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