How to update symfony?

It looks like it is a stupid question, but i could not figure how to update symfony to 1.3. When i follow the tutorial to update my project, one of the step says "Upgrade symfony to 1.3" which is actually what i am following the tuto for... Well i guess there is a difference between updating the project and symfony. But i can not find out how to do this step. I tried to type the command

pear upgrade symfony/symfony-1.3.0

which seamed to work (upgrade ok), but when i type

php symfony -V

it still tells me that i have the 1.2.9 version, and the pr开发者_运维技巧oject:update1.3 does not exist...

I don't really know much about pear, i did this in my root symfony path, is that correct ? I also copied all files from lib/vendor/symfony before, but it didn't work either.

Someone could help ?

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Where is your project configured to load symfony from? Check your ProjectConfiguration.class.php in the config directory. You'll have to update the version of symfony that it is pointing to.