Hi there, welcome to the forum.
I would pass over the ISO image issue for now, as I understand that you currently have your system installed (using the old image) and I believe updated.
If the current problem with the installed system is that you cannot boot with proprietary drivers, you should take a look here (add the ibt=off kernel boot parameter, due to a known Nvidia problem with the latest Intel processors) any many other releated topics.
On the other hand, if you have problems installing proprietary drivers, you should provide more information, like what error messages you get.
This is fine, however you should familiarize yourself with the forum and search functions. You will definitely find a lot of useful information. In fact, your profile shows that you have not searched much…
