Ok guys you convince me.
I will upgrade to 2.0.16.
Now I have 2.2.4 installed.
First of all I have 2.2.4 installed locally. That’s what I do. I fix everything at a local host and then I upload them.
That is what I want to do with 2.0.16 too.
How can I install 2.0.16 locally and keep what I have done to 2.2.4?

I read that if I want to upload 2.0.16 I have to upload the XOOPS 2.0.16 and the downgrade.php.

Yesterday I did that and when I wrote at the explorer the name of my webpage it prompt me to install 2.0.16! is this what I want ??