70D frozen on "Firmware update program" Update file cannot be found . . .

[clicker]

My 70D is frozen on the screen that says "Firmware update program  Update file cannot be found.  Please check the memory card and reload the battery and try again".  This message still appears when the camera power is turned off - I have to remove the battery, or it just burns up the battery.   There are no updates available for the camera, yet the message persists, even when battery and memory card are removed and reloaded. 

[kcalpesh]

Try the below mentioned solution. It may just work for you.

How to fix the firmware update error

[TCampbell]

This is a zombie thread from April 2016.  

There are basically two official ways to do firmware updates with Canon EOS cameras...

(1) One method is to connect the camera to a computer and use EOS Utility.

(2)  Another way is to copy the firmware update to a file and then use the in-camera menus to initiate a firmware update.

Then there's the unofficial method that Magic Lantern uses... which is to flag the memory card as a "bootable" device and put the firmware on the card.

If your camera is spontaneously telling you that you have to do a firmware update and you aren't doing a deliberate firmware update (via EOS Utility or by using in-camera menu to force an update) then something else is wrong.

You should reformat the memory card use the in-camera format with the "low-level" format option enabled. 

Is there a possibility your memory card was used in a different camera?  Do not use a memory card in your camera if it was previously used in a different camera unless you reformat it (it's a bad idea to share memory cards between cameras.)