Version 3.7.5 to 3.8.X
 

Hi,

I'm going to upgrade my vbulletion from version 3.7.5 to 3.8.x
However, I've a few doubts:

1. Do I need to delete all my current plugin/products?

2. Some template scripts already have changed due to the plugin/products installed, do I need to revert them back?

3. Do I need to upgrade my current plugin/products to the 3.8.x version too?

4. How long will it take for the upgrading process, if successfully.

thank you. :)