Umbraco 3.0 to latest version migration

We have Live Site running with Umbraco 3.0 version. Now, we want to use latest Umbraco V4.7. We need to know how 开发者_运维百科it is possible? Is there any Open Source OR Free Tool which can support this?

Upgrade to each major version in succession. First, upgrade from 3.0 to 4.0, then 4.0 to 4.5.2, then to 4.7.

If you need help I have a blog post recording the process I have done from 4.0 to 4.7.

Notes and Experiences Upgrading Umbraco 4.0.x to 4.6.1 and 4.7.0

Create a package of your current site, this can be done with the help of Developer section -> packages -> create package in umbraco. Then in ver4.7 install that package again in a blank site, your prevoius site should be up.