Canon imageCLASS MF445dw — firmware 12.09

Mono laser MFP, A4, network · package 31.6 MB · released 2026-02-11 · reviewed by the PrintDoc service desk

Current firmware	12.09 (2026-02-11)
Package	User Support Tool (.exe) / .bin over web · 31.6 MB
Print engine	UFR II
Typical duration	10–15 minutes
Risk	Medium

What this release changes

Fixes an ADF double-feed detection that stopped scans on thin originals.
Adds SMB 3.1.1 for scan-to-folder; SMB 1 is now disabled by default.
Resolves a memory leak after roughly 4,000 fax pages.

Before you start. Print a configuration page and keep it — it holds the current firmware version, the IP address and the counters you will want if anything goes wrong. Put the device on a wired connection if it has one, pause the print queue, and make sure nothing will cut power for the next 10–15 minutes.

Method 1 — web interface (recommended)

Open the printer’s address in a browser and sign in as administrator.
Go to Remote UI → Settings/Registration → Firmware Update → Manual Update.
Select the downloaded package and start the upload. Do not close the tab.
Wait for the device to reboot on its own. The panel returns to Ready when it is done.
Print a configuration page and confirm the version now reads 12.09.

Method 2 — USB / local

Service mode only — not a field procedure.

Method 3 — from the panel

If the device can reach the internet: Menu → Management Settings → Update Firmware → Via PC / Via Internet. This pulls the same release; it is the simplest route, and the slowest, because the device downloads the package itself.

Model-specific notes

After this update scan-to-folder over SMB 1 stops working. Move the share to SMB 2 or later before flashing, or scanning breaks for everyone on Monday morning.
The Remote UI upload needs the device administrator PIN. The default is 7654321 and most sites have changed it — find it before you begin.
Fax memory is cleared. Print or forward pending faxes first.

If the update fails

A failed upload is not a dead printer. Power-cycle the device, wait two minutes, print a configuration page and check which version it reports. If it still reports the old version, the flash never started and you can simply try again — over USB or the panel this time, not the network. If the panel is stuck on a boot or download screen, follow rollback and recovery.

Not sure it is worth updating? If the device is doing its job and none of the fixes above describes a problem you actually have, leave it. Firmware is maintenance, not an upgrade.

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