vBulletin - MySQL Downgrade

**Purple Rain** · Feb 18th, 2009, 4:52 am

Anybody know of any way that I can downgrade a vbulletin database from 3.8.1 to 3.74?

I have searched for info on this but can't seem to find anything.

**Big Dan** · Feb 18th, 2009, 5:24 am

You can try using Impex (vBulletin's conversion system available from the members center).

Here's how I'd try and get it done:

Backup your current 3.8.1 DB

Make a new DB

Download 3.7.x

Install it to the new DB like a fresh board.

Upload Impex to the new install set your source DB to the old DB then try running the import modules.

Again, I don't see why it wouldn't work but I'm not guaranteeing anything. Let us know how it goes.

**Purple Rain** · Feb 18th, 2009, 6:35 am

Good Idea, thanks Dan. I will try that

Purple Rain added 69 Minutes and 56 Seconds later...

I did not manage to get it to work that way, so I went this way about it.

Converted the database to MyBB using their convertor, then converted the MyBB database back to vBulletin using impEX and it worked like a charm. I looked all over for a solution to this and found vBulletin saying it was impossible, but as I have found out, it's not - it just requires a bit of work. Thanks Dan

**Big Dan** · Feb 18th, 2009, 6:57 am

Glad to hear. Good bit of info for the future too.

One ?: Does the myBB to vB conversion require that users change their passwords?

I know one of them does I forget if it's phpBB, SMF, or myBB has to have users login and change their pw due to the differences in the way they're hashed.

**Purple Rain** · Feb 18th, 2009, 7:03 am

There is a login convert plugin as part of the conversion which allows users to keep their passwords. I would love to see this feature for conversion to vb from other boards. It's so annoying.