Rumors > Lenses
Canon EF 40mm f/2.8 STM Firmware Available
DanielG.:
My update failed with a jump to a few thousand % done several times or with a shutter sound, display switching off and the self timer LED illuminated. Only removing the battery after a few minutes helped.
Mounting the lens while the camera (5D3 with latest firmware) results in "Err 01".
Tried the US an German Canon sites for download, tested the ZIP (Windows) and DMG (Mac) archives, set the 5D3's language to Japanese. No luck.
I've sent Canon's support an email. Let's collect the answers in this thread.
Mt Spokane Photography:
My 40mm does not have the issue, so I'm certainly not going to update it, not at least until everyone is having the update work well.
I'll keep reading others experiences, but it does not sound good right now.
DanielG.:
--- Quote from: Mt Spokane Photography on August 21, 2012, 02:00:24 PM ---My 40mm does not have the issue, so I'm certainly not going to update it, not at least until everyone is having the update work well.
I'll keep reading others experiences, but it does not sound good right now.
--- End quote ---
My 40mm had the issue a few times, so I didn't need to update right away. On the other hand I never had problems with (Canon) camera, iPhone, iPad, router, BIOS or Mac firmware updates which are more complex (I guess). Even my Apple Cinema Display and MacBook Pro battery got updates.
This is my first failed firmware update ever. Lesson learned.
Canon Rumors:
Firmware Version 1.2.0 addresses the following phenomenon
1. If pressure is applied to the lens barrel while the lens is mounted to the camera (pressure can be applied even while attaching the lens cap or while carrying the camera with the lens attached in a bag), the autofocusing function of the lens may stop working.
A Canon EOS 1D X, 5D III (at v1.1.3 or later) or a Rebel T4i/650D is needed to install the upgrade. Alternatively, the lens can be sent to Canon Service to have the firmware upgrade installed.
Download Firmware 1.2.0
cr
crasher8:
Why can't other bodies handle the FW update?
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