@BitMaxz has already mentioned that you need to be careful in case you want to upgrade Electrum, because at the end of 2018 a critical vulnerability appeared and a lot of people lost their coins. Except you have to ignore every message you get if you really have an outdated wallet, even if you download wallet files from the original location, you should verify those files before using them.

You can read detailed instructions on the following link, but like the others, I would advise you to seriously consider a safer solution than desktop hot wallet.

[GUIDE] How to Safely Download and Verify Electrum [Guide]