07-01-2014 10:31 AM
Hi, my understanding is that the 7D cannot be downgraded from firmware 2.0.5 to 2.0.3. Just read it on Canon's website, and on several other forums.
If you know of a way to do so that doesn't brick my 7D, please inform... I'm sure lots of other users out there would find this extremely helpful as well!
07-01-2014 10:47 AM - edited 07-01-2014 10:55 AM
Lots of Magic lantern users report no problems in backdating their firmware. Canon also says that you can't backdate the 5D Mk III but here is a video showing it is possible.
07-01-2014 10:57 AM
07-01-2014 11:13 AM - edited 07-01-2014 11:28 AM
With my 5D3 I had both firmware versions on the memory card and then I could switch back and forth between versions whenever I wanted. Magic Lantern now works with the latest 5D3 firmware so there is no need for that now.
The 7D still needs to be running 2.0.3 in order to run Magic lantern.
EDIT: If your camera had previous firmware versions, it is very easy to backdate and then later upgrade firmware versions.
If your 7D came new fron Canon with 2.0.5 installed there is a slight chance it won't backdate. I heard of one factrory new 5D3 owner who had some problems but it was never confirmed why he had problems.
07-01-2014 03:25 PM
I was able to backdate my 7D from firmware 2.0.5 to 2.0.3. My 7D was not a newer model or factory loaded with 2.0.5.
I then loaded the most recent firmware for Magic Lantern (magiclantern-Nightly.2014Jun30.7D203) onto my 7D with no problems whatsoever. Very simple, loaded it in the same manner as upgrading/backdating firmware.
Wow... there are a TON of useful features on Magic Lantern! Really worth the time taken to research and install.
Thanks for your assistance and assurance I was on the right path.
07-01-2014 09:43 PM
walmirribeiro, the result is in the post above.
- Backdated successfully.
- Magic Lantern install successful.
- 7D running smoothly with both Magic Lantern and Canon firmware running in tandem.
Only noticed one super tiny bug that's easily fixable... not permanently fixable by me, but fixable by deselecting a menu item. I'm not diving into coding my own 7D just yet.