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New Contributor
Posts: 1
Registered: ‎05-24-2016

How do I fix my 5D Mk2 that is stuck on 98% during firmware update?

I have tried to do a firmware update on my 5D Mk2 but the update stopped at 98% until the battery dies. Can anyone help please?

Esteemed Contributor
Posts: 3,176
Registered: ‎02-17-2016

Re: How do I fix my 5D Mk2 that is stuck on 98% during firmware update?

I think you need to call Canon.

Have you tried to reload the firmware download to the card and trying again? It could be a corrupt file.

Respected Contributor
Posts: 1,083
Registered: ‎02-06-2013

Re: How do I fix my 5D Mk2 that is stuck on 98% during firmware update?


@SDCapture wrote:

I have tried to do a firmware update on my 5D Mk2 but the update stopped at 98% until the battery dies. Can anyone help please?


You can try removing the batteries - main battery and the small date/time battery (which should be accessible via the empty main battery chamber) then leave the battery off for a while - I would leave them out overnight so the circuitry capacitance can be completely discharged.  Replace the batteries.  There is a good chance the camera might come back to life.  If not, send in for service.

 

If the camera comes back, I'd re-download the firmware, reformat the CF card and try again. I would not use the same download which might be corrupted.

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Esteemed Contributor
Posts: 2,327
Registered: ‎11-14-2012

Re: How do I fix my 5D Mk2 that is stuck on 98% during firmware update?

Was it a Zip (compressed ) file that you forgot ou unzip?

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