Hi,
thank for the quick reply.
Do you have a security plugin installed if so disable it. (I don’t have)
Also you need to CHMOD your folder/files 755/644 or even just while you do the install 777 (I have done all of them, and also I had a contact with the server administrator to do it, but without any success)
Upgrade and uploads folder have 777 permission.
What could I do? I have a huge work in this website, and do not want to loose all data, but keeping the website up to date. Please help me anyway!