Clicking on the link, to "Try the updated Blogger interface", you'll find yourself viewing a rather monolithic and ominous warning.
Your browser is no longer supported by Blogger. Some parts of Blogger will not work and you may experience problems.
If you are having problems, try Google Chrome. | Dismiss
Now, you're at a point of no return. If your browser is current, you can always take a look at the New GUI, then click "Old Blogger interface", behind the gear icon - and you'll be none the worse. If your browser is out of date, when you get to The New GUI, you may not see the gear icon (or anything else).
If you cannot use the "Old Blogger interface" menu item, you can use the Blogger Classic GUI Recovery URL.
One day, though, you will need to move forward.
- Install Chrome, or a different browser at current version, then switch back.
- Upgrade the current browser.