I had a couple of programmers create my XOOPS site and I am no longer in contact with them so I'm trying to figure this out on my own. So thanks in advance for your help!

I have a rather larger XOOPS site that is currently on 2.0.7.3. It has a very customized upload section.

So, my question is, can I do one of the following successfully?

1. Take the shortcut and just apply the latest patch of 2.0.13.1 and be good?

2. Install each patch update to get to 2.0.13.2?

My major concern is the customized upload module. Would any of these patches cause any issues on the site or are they simply core updates and a simpleton like myself can apply these patches?

I think the right way is always installing each patch one by one. Jumping from 2.0.7.3 to 2.0.13.2 will probably not work.
Anyway remember backing-up db and files before updating

Regards,
Marco.

Best practice is to do them one at a time. There is a link to a flash tutroial for this here