Sorry, there was a misunderstanding.
1) My post was not a request for help but a report of a fact. I was well aware of all three facts you mentioned when I posted my message.
2) OK, I said "install the 1.05 Patch manually" but since the topic title is "going back to 1.05" I thought it was obvious that I meant "downgrade manually using the 1.05 patch executable". I'm not a native english speaker, so please excuse the wrong expression.
Here's to writing so people can help. Your post is unintelligable.
Also, sorry, for the misunderstanding.