Update customized theme

[Crireis]

Hi,

I hired a developer to customize a theme for my Prestashop Store. I mistakenly payed him upfront and the service was not finished. The theme is good and ready, but not all modules and configurations are working.
The biggest problem is in the registration part, when creating a account. The fields are all wrong and asking a lot of mistaken informations, when it finishes. Other problem is that it can't complete a transaction because of a module I could not uninstall completely.
The thing is that I can work with the images and modules for prestashop, no problem, but I don't know how to configure using php and more technical stuff.
Can I update the prestashop or reinstall the register part without losing the customized theme? How do I do that?

Thanks in advance and best regards,

[inveostore.com]

1) Download PS package with version you are currently using
2) Download the latest PS package
3) Extract both packages
4) Download a comparing app such as KDiff3 & install it
5) Compare themes/prestashop directories of both extracted packages with this app
6) Changes you find copy to your theme

[Crireis]

Hi, thanks for the tip.
I did what you said and helped a lot.

Once I added the files needed for my layout, such as css, a few issues continue showing, such as not asking for gender and some fields asked as required.
Could he's set it in the global css that he created for my store? Where should I edit it? Do I still be doing something wrong?

Thanks,

[inveostore.com]

You need not only to copy missing files but also missing changes in some files. If you are using KDiff3 you can see changes by double-clicking on file set.