Updating manually from 1.3.0.2 to latest

Hello!

I just tried to update to 1.3.7 using the download file, and followed the instructions for the installation (update). But it resulted in that my store got all blank (as in blank page) when I went to the store.

I know I've modified the store pretty much.

I wonder if there's any page with the actual changes code line by code line? So I can update manually by editing the files?

I also wonder what's the real difference of importance between 1.3.0.2 and 1.3.7? (if it is of little importance maybe it is better to just leave it as is)

Thank you! <3

That task is left up to everyone, to do themselves.

There is a vast difference in v1.3.0.2 to v1.3.7 ...

There are security issues, bug fixes, additional features etc.

NOTE: blank pages are usually the result of a bad upload of files where files are missing or corrupt ...

Try reloading the files for v1.3.7 ... then add the patch at:
http://www.zen-cart.com/forum/showthread.php?t=56216

Thank you, Ajeh, that's more constructive answer than the one from tez.
I will try to give it a try again.