topic Re: t4i firmware bug in EOS DSLR & Mirrorless Cameras

t4i firmware bug

hvirla — Wed, 13 Mar 2013 22:48:01 GMT

My Rebel T4i often freezes in live view mode and I have to remove the battery to unlock it.

Is it a firmware problem?

Re: t4i firmware bug

HDCamTeam — Fri, 15 Mar 2013 21:28:22 GMT

@hvirla wrote:
My Rebel T4i often freezes in live view mode and I have to remove the battery to unlock it.
Is it a firmware problem?

Hi,

Please give us more details of what you are exactly doing when that happens, and what accessories you are using: Card, lens, etc.

Does it also happen with another lens and another memory card?

It shouldn't happen indeed, but just to discard there is something else working wrong instead your camera.

Regards.

Re: t4i firmware bug

hvirla — Fri, 15 Mar 2013 22:57:22 GMT

Thank you. I have the T4i with 18-135mm STM lens kit and a Transcend 32GB Class 10 SD Card.

This event occurs only using the Live View mode for about 2 or 3 minutes, when I turn off the camera and turn it on again, it freezes and does not respond until the battery is removed.

Hugo.

Re: t4i firmware bug

Tim — Sat, 16 Mar 2013 00:18:35 GMT

Hello Hvirla,

We are not aware that there is a bug in the firmware of your EOS Rebel T4i camera. We should try resetting your camera using the following steps to try and resolve this issue.

1. Turn the camera OFF and remove the memory card and battery.

2. Detach the lens and place it out of the way. Use the camera body cap to prevent dust from getting inside.

3. Let the camera sit for about 20 minutes.

4. In the interim please clean the lens contacts with a soft, new, lint free micro fiber cloth. Use the microfiber cloth to gently rub across the lens contacts.

5. Put these items back in the camera and turn the power switch to <OFF> and <ON> again.

6. Using the Mode Dial, change from Auto to Program and back while trying to shoot with the camera.

7. Try a different Canon EF lens on the camera.

- Check the camera's on-board flash unit.

- Try a different card and also check that the card slot is closed securely.

- Clean the battery contacts or use a fully charged battery.

If completing the above steps fail to resolve the issue then we recommend sending the camera into the Factory for evaluation. The root cause should become apparent under Factory service conditions. To start off the service process, please sign up for a repair on our web site.

Re: t4i firmware bug

jpturner — Thu, 21 Mar 2013 06:37:19 GMT

I have this exact same issue. T4i 18-135 EFS STM Bunde - 16gig class 10 card. Lockup in liveview after changing dial program. All controls become non-responsive. Removing battery and hard "restarting" camera is only solution. BTW tried your reset and still random lockup in liveview after changing dial program. Please advise -

Re: t4i firmware bug

hvirla — Thu, 21 Mar 2013 21:10:31 GMT

Hi, jpturner

I carried out all the steps listed by Tim in his replay without result.

Please, check this video from the 15th minute, apparently confirms my theory that it is a firmware problem of this camera that Canon has not solved yet.

http://www.youtube.com/watch?v=s2EtxQ6Obik

Re: t4i firmware bug

jpturner — Thu, 21 Mar 2013 21:20:37 GMT

Yep and this is its been less than a year and the t5i was announced today... I doubt this problem will ever be addresed now. Dave Dugdale does great reviews BTW. I hope this is fixed.

Re: t4i firmware bug

heretohelp — Tue, 09 Apr 2013 04:14:55 GMT

This happened to me last October. Thought it was just isolated to a certain batch of cameras but looks like it's still slipping past the factory. This has to do with Live View and Continuous AF being enabled for a period of time on defective units. The continuous focus hunting makes the batteries hot fast which may be a factor. Turning Continuous AF off should prevent freezing, but the best solution is to return it for a new one if you can or repair it. Don't wait for a firmware update, because it may not fix the issue.

My replacement still works and I love it. Canon please fix this issue for future users!

Re: t4i firmware bug

ghernandez8943 — Thu, 30 May 2013 05:37:47 GMT

I have a similar problem. I have the t4i with a 18/135 STM lens kit and it stops to autofocus and disables manual focus by itself in movie mode until I hard restart it. Even after a restart, sometimes it works sometimes it doesn't (the first time).

Re: t4i firmware bug

Cal001 — Thu, 06 Jun 2013 07:36:30 GMT

I also have the t4i using 18-135 STM lens with 32 gig class 10 memory.

Camera locks, battery must be removed, All focusing ability is lost from time to time In auto as well as manual.

Makes you afraid to touch anything. I believe the issue is worse with the STM lens.. But weren't we suppose to buy this lens to unlock the FULL potential of the camera ?

I work on the side shooting hundreds of wedding videos in Las Vegas. I bought this camera to make the jump to DLSR Video. I'm very unhappy with the results.

No one seems to have the answers really. I bought the camera in January 2013 and before I knew it the t5i was released ??

Just makes you wonder.

Re: t4i firmware bug

bobakman — Sun, 09 Jun 2013 16:02:38 GMT

Contact them by phone they will resolve yor issue. I had the exact same issue with my T4i and it was resolved after my camera was replaced. See thread here: http://forums.usa.canon.com/t5/EOS-Rebel/T4i-camera-completely-locking-up-in-the-ON-position/m-p/7285#U7285

Bob

Re: t4i firmware bug

Jason — Fri, 14 Jun 2013 22:08:53 GMT

Hi everyone,

We have an update on this topic. New EOS Rebel T4i firmware has just been released. Firmware Version 1.0.4 offers performance improvements when shooting with certain lens models equipped with a stepping motor. To learn more and download the update, click here.

Thank you.

Re: t4i firmware bug

Felipe_Henao — Sat, 15 Jun 2013 03:54:26 GMT

I'm more than happy to deal with Canon. T4i is a fantastic camera and with the 1.0.4 update, there is not any crashing at all

After an intensive testing all day long with video, can say the bug was solved.

Canon for ever.

Re: t4i firmware bug

darkmatter661 — Thu, 25 Jul 2013 23:13:31 GMT

I'm having this exact issue on my brand new (a day old) T5i with 18-135 STM. I'm returning it to the online store for a replacement... Very disapointed!

Re: t4i firmware bug

bobakman — Thu, 25 Jul 2013 23:28:45 GMT

What is the firmware version on your T5i?

Bob

Re: t4i firmware bug

darkmatter661 — Thu, 25 Jul 2013 23:30:37 GMT

1.1.1

Re: t4i firmware bug

bobakman — Thu, 25 Jul 2013 23:51:18 GMT

Yep 1.1.1 same as mine. I just wanted to make sure that there was no difference. My T5i is about 3 months old and so far it has not had the same issue that my T4i did then again it was 3 months out that my T4i started having the issue. Sorry to hear that yours has but returning it is the right thing to do.

Bob

Re: t4i firmware bug

ghernandez8943 — Fri, 26 Jul 2013 06:36:21 GMT

I took my camera and stm lens to canon's service and repair. It turned out that there wasn't anything wronge with the camera itself but there was something wronge with the lens. Canon stated they made "electrical adjustments" to the lens board and that seemed to fix this issue. Haven't had a problem since.

Re: t4i firmware bug

darkmatter661 — Fri, 26 Jul 2013 17:26:11 GMT

@ghernandez8943 wrote:
I took my camera and stm lens to canon's service and repair. It turned out that there wasn't anything wronge with the camera itself but there was something wronge with the lens. Canon stated they made "electrical adjustments" to the lens board and that seemed to fix this issue. Haven't had a problem since.

Was your camera a T5i? I'm leaning towards this being the problem on mine as well only because when I put the 55-250mm IS II on it's not crashing, even though this lens is quite stubborn on auto focus, and noisy! I'm likely going to return the whole thing to the store and let them provide a replacement since I've only had it for a couple of days. But, if it's just the lens I may ask for an advance replacement to see if that does the trick instead 🙂 Thanks!

Re: t4i firmware bug

ghernandez8943 — Fri, 26 Jul 2013 18:00:39 GMT

I have the t4i with 18/135 STM kit. I know there's a firmware update for this issue but I can't say if it works or not. After canon repaired my lens it worked fine. A week later I did the firmware update and it worked same. You should definitely get your lens looked at. It should be under the warranty if you had it less than a year I think. I turned my camera in Friday and got it back Tuesday working as designed without any problems.