600RT Flash bug in new Canon 5DIII firmware.

Started May 12, 2013 | Discussions thread
Muresan Bogdan Contributing Member • Posts: 511
Re: 600RT Flash bug in new Canon 5DIII firmware.

You can find the old firmware on the Canon website I believe. Try flashing back the old firmware and do the same test procedure. If the problem is only with the new 1.2 firmware, write Canon about it. I have the 5d3 but not the 600 flash so it is hard to test. I will test with my flashes and see what happens.

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