Sorting by date

Been printing using the SD card on my Taz 6s for years now. Love it. Much better than having a computer tethered all the time.

I am sometimes a little annoyed that the LCD screen on the Taz limits the number of characters in the file name that one can see, but I have long gotten around that by the fact that the files sorted by date, with most recent at the top. Printing the last file saved was always the right one.

But today, for unknown reasons, I must have accidentally changed something, the files have stopped sorting by date, and in fact I started the wrong print… Does anyone know how you get the files to sort by date again?