topic Re: Canon SL3 firmware in Camera Software

EOS Rebel SL3 has firmware 1.0.5, site only has 1.0.3; lens firmware needed, too?

Kiwislicer — Thu, 19 Mar 2026 12:37:34 GMT

I just bought a used Canon SL3, and I looked at the firmware it says "1.0.5" for the camera but on the website I can only find "1.0.3", how come? I'm also wondering if my lens needs a firmware update it's "1.0.1", I tried searching for it but I couldn't find anything, either I'm not searching hard enough or there is no update. Help would be appreciated, thanks.

Gear: Canon EOS REBEL SL3 + CANON ZOOM LENS EF-S 18-55mm 1:4-5.6 IS STM

Re: Canon SL3 firmware

March411 — Thu, 19 Mar 2026 02:34:55 GMT

Hey @Kiwislicer

The file is available on the Canon website but it is showing Version 1.0.3. A link is provided below.

https://www.usa.canon.com/support/p/eos-rebel-sl3?srsltid=AfmBOoo4OGTkrjFMjrVhZLe81gF6KWJZGnjeoYZDqOjHyRswnjMAYLjO

Re: Canon SL3 firmware

Kiwislicer — Thu, 19 Mar 2026 03:29:28 GMT

Yeah, I found that but I was curious about my camera firmware saying "1.0.5" when the firmware on the website is "1.0.3".

Re: Canon SL3 firmware

Peter — Thu, 19 Mar 2026 08:25:12 GMT

It has happened before that Canon released newer firmware bundled with the camera.

Re: EOS Rebel SL3 has firmware 1.0.5, site only has 1.0.3; lens firmware needed, too?

kvbarkley — Thu, 19 Mar 2026 13:09:07 GMT

Sometimes they have regional firmware updates to fix minor typos in foreign languages, I think.

As far as the lens, if it is not giving you trouble, don't update it. Read the description and see if it applies to you, it might only apply to RF cameras through an adapter or something.

Re: EOS Rebel SL3 has firmware 1.0.5, site only has 1.0.3; lens firmware needed, too?

zakslm — Thu, 19 Mar 2026 16:13:07 GMT

Kiwislicer,

When I bought my camera it was had a "newer" version of the firmware vs. what Canon listed as the latest firmware download on their website. Here is Google AI's explanation and it makes sense:

When Canon manufactures a new batch of cameras, they often pre-load them with a newer firmware version that includes minor bug fixes or support for newer components (like a different screen or sensor revision)." I take it mean that the firmware you have on your camera contains tweaks and bug fixes that are minor and not significant enough to update the firmware version listed on Canon's website.

My personal experience validates's Google's AI advice: "As long as your camera is functioning correctly, there is no need to worry. You cannot "downgrade" to the lower version on the website, and you generally wouldn't want to, as your current version is technically more advanced."

Good luck!