Thanks for all the solutions.
Since I am a new Electrum user who doesn't really know all about this bitcoin wallet, it's only natural when I ask the question how to update to the latest version of the portable application that I use.
I have deleted one portable 4.4.1 application but not deleted the electrum data folder.
In terms of instructions, what I did was considered not wrong.
However I'm starting to worry that the Electrum portable version doesn't guarantee as much security as Electrum other than the portable version as I participated in the ELECTRUM discussion on a local board and I tried to link here the Thomas V topic I took from a local forum.
-snip-
It is not safe to use a portable version of Electrum on an insecure computer!
Don't get me wrong: I am not saying that a portable build is by itself more dangerous than a non-portable version.
However, a portable version does not bring anything more in terms of security. It does not protect you from the computer you are using.
In addition, portable builds encourage dangerous behaviour, because they make it very easy to use your wallet on third party computers, that might be infected with viruses and keyloggers.
I was never enthusiastic about distributing portable versions of Electrum.
I did it because the demand for portable versions was so high that portable builds distributed by third parties were getting popular.
That's the only reason why I accepted to distribute portable builds: I do this in order to avoid an even worse situation.
Because I still want to know more about security because it is very important to me.