topic Re: EOS R5C will not update firmware: “check the power supply” in Professional Video

EOS R5C will not update firmware: “check the power supply”

dkallan — Wed, 28 Feb 2024 20:45:24 GMT

My Canon EOS R5 C came with firmware version 1.0.5.1 installed. I have the 1.0.6.1 firmware file on the formatted SDXC (v90) card. The R5C sees it and will open the Version 1.0.5.1 -> Version 1.0.6.1 update screen, but the “OK” button is greyed out, displaying the message “Check the power supply.”

I’ve tried multiple USB power supplies (Apple 96W, Anker 100W, Apple 140W): the R5C works fine in USB PD mode for every function except firmware update. I’ve tried with and without a fully-charged EP battery installed, removing the CFexpress card, removing the lens, lowering the video settings to their bare minimum.

Any idea why it won’t update and what I can do to resolve?

Re: R5C will not update firmware: “check the power supply”

AtticusLake — Wed, 28 Feb 2024 20:42:12 GMT

Sorry to hear about this -- I've never had this problem with my R5C, except when the battery was actually low.

Only one thing I can think of -- when you say "with and without a fully-charged EP battery" ... the camera will not run unless there is a battery installed, and for that camera, the battery really needs to be an LP-E6 NH. Note the "NH". If you're using an older LP-E6 battery, without the "NH", that might be the issue. Otherwise sorry, I have no idea.

Re: EOS R5C will not update firmware: “check the power supply”

shadowsports — Wed, 28 Feb 2024 21:13:22 GMT

Greetings,

That message typically means the battery % is too low. I don't recall what the minimum level is off hand, but its like 55% or more. It doesn't matter if its plugged in to USB-C PD or USB-C AC... if the camera detects low battery you cannot update the FW. Its a protection feature.

Everything else sounds correct. Use freshly charged battery LP-E6NH (as Ian pointed out), Firmware on root of freshly formatted SD Card (v1.0.6.1) is "VSD10.FIR", CFExpress B removed. Cinema Mode, Use the rear control dial to move focus to the OK button and press set. Then don't touch and wait the 9 min.

Do you have anything else connected to the camera besides a lens? I always connect a USB-C PD to my camera when updating FW. Either my MAC charger 90w, 9v, 3.0A or my portable 45w same. Camera off > insert card > insert battery > connect PD and power up.

**Edit, The settings get reset, so you don't need to change anything lower performance modes, etc. for the update.

Keep us posted 😃

Re: EOS R5C will not update firmware: “check the power supply”

dkallan — Wed, 28 Feb 2024 21:23:18 GMT

Thank you to both of you! Managed to get it resolved by using an older LP-E6NH battery from my R5. All of my batteries are the NH 2130mAh litihum (the older 1800mAh ones from my 5D/EF-series days are long gone). This problem occurred with the brand new LP-E6NH battery that came with the R5C. Both batteries were fully charged, so I really don't understand what happened (Canon wants me to keep an eye on that new battery, but anyway, FW is finally updated!

Re: EOS R5C will not update firmware: “check the power supply”

AtticusLake — Thu, 29 Feb 2024 08:40:18 GMT

Well I'm gad you got it sorted; though it does seem baffling. Could be a faulty battery, I guess.

Re: EOS R5C will not update firmware: “check the power supply”

shadowsports — Thu, 29 Feb 2024 15:30:44 GMT

Great to hear. 👍