joomla - 升级 Joomla！1.7.2 稳定到 2.5

Question

我需要升级 Joomla！1.7.2 稳定到 2.5（它是一个实时站点）

我的一些疑问是

 Does the design changes back to the original default one.If so how can i recover it back?

 Are there any good blog to refer its step by step process?

 Are there any extension manager to do it with less error and quickly?

 Jomsocial 2.4 is installed in it, does upgrading Joomla 2.5 will affect the files in 
 Jomsocial,because I have done some updations in these files(in components/com_community 
 and components/com_users)

Answer 1

请查看以下链接以获取更多信息

1. http://docs.joomla.org/Upgrading_from_an_existing_version
2. http://www.ijoomla.com/blog/joomla-2-5-what-to-expect-how-to-upgrade-from-joomla-1-5-or-1-7/
3. http://brian.teeman.net/joomla-1.7/upgrading-to-joomla-2.5-some-warnings.html