Simple tool to recover old version of overwritten file I accidentally overwrote a small text file. I have no selectable TimeMachine snapshots - the "up" buttons are greyed out (note; tried Ctrl + Shift + C to remount but it makes no difference). Which is not surprising, as I have no external drive setup (and cannot because of security reasons).

There are a plethora of bad &amp; free recovery apps that don't seem to work. 

I'm wondering if there is any free &amp; simple option available?
Without a backup the chances of recovery are slim. And assuming that you have been using your Mac even after you deleted/overwrote the file the chances are even lower (because the freed space may have already been reused).