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Messages - Jaco2k

#1
Camera-specific Development / Re: Canon EOS M
November 08, 2014, 12:21:02 AM
Just a preliminary note - I managed to solve the shutter bug with a new card and a new install. I still need to investigate the root cause but I have a good idea about a process to fix this.

Here is what I did:
- I had a 64GB card (Transcend) in my camera that was affected by this bug
- I got a new 64 GB card (Kingston) and DID NOT prepare it at all in anyway
- I downloaded the Original Canon 2.02 Firmware update and put it on the new card - NOTE: I tried to power cycle camera and the shutter was working, as expected, when the card with ML was removed
- I inserted the new card in the Camera and reflashed the original 2.02 Firmware (Shutter still worked after power cycling camera)
- I downloaded the latest nightly (8.11.2014 at the time of writing) and dropped it into the new card
- I inserted the card again in the camera (I used a memory card reader for all the operations; shutter was still working) and repeated the firmware update process to install ML
- ML installed successfully and told me to power cycle the camera (I did not mess with the boot settings - just told it to reboot camera)
- Camera rebooted and.... SHUTTER WAS WORKING!!!

I could not believe it, so I cycled it a few times more and it was still working. Inserting the old card back would immediately reproduce the bug but with the new card, working fine.

I followed to the letter the official instructions to update firmware from the Canon site (P mode, etc.)

Next up I am going to format the old car, actually, even wipe all the partitions, format it similar to the new card and going to try and reproduce the "fix" on it