[Koha] upgrade

Hello all I would liek to upgrade koha 3.00.02 to last versio 3.06 So in the INSTALL txt I see this: UPGRADE ======= If you are upgrading from a previous installation of Koha 3, you can use the following: perl Makefile.PL --prev-install-log /path/to/koha-install-log make make test sudo make upgrade I do not anderstand exactly....the Makefile.PL command had to be lunched from the new koha directory?? so koha-3.06 ?? or from the other version? And then the path to koha install log, what is this path exactly? Thanks in advance Cheers