Firmware: Canon EF 100-400mm f/4.5-5.6L IS II USM v.1.0.7

Canon Rumors Guy

Canon EOS 40D
CR Pro
Jul 20, 2010
10,776
3,157
Canada
www.canonrumors.com

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EOS R5, 5D Mark IV
Feb 7, 2011
36
31
The update gives me ERR 70 trying to update with a 5D-IV :-( I tried with two different SD SanDisk cards formatted in camera (SDXC II Extreme Pro 64GB and SDXC I Extreme Pro 512GB).

I had to reset the camera putting out the battery to recover the camera functions.

SOLVED 7 nov: I tried again with an old SD card (SanDisk Extreme Pro SD HC I 16 GB) and the firmware update worked flawlessly.
 
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AlanF

Desperately seeking birds
CR Pro
Aug 16, 2012
12,342
22,517
I just got this lens off the used market.....can I even update the firmware with my 5D3?

-Brian
I have taken many, many 10s of 1000s of shots with 3 copies of the lens on several Canon bodies with 0.0 problems. I am pretty sure you could upgrade on the 5DIII, but don't upgrade unless you have to - if it works, don't fix it.
 
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AlanF

Desperately seeking birds
CR Pro
Aug 16, 2012
12,342
22,517
Well, like the above posters, mine works flawlessly on my 5D3. However, please share your source, I have not seen any particular body mentioned in the few places who announced it such as TDP.
As I posted earlier, my copies have had 0.0 problems on 10s and 10s of thousands of shots on a variety of bodies. There are reports on forums of IS jumping of the 400mm DO II and other lenses on the R5, which is why I suspect the upgrade is directed there.
 
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