How to update the firmware of HP LaserJet Pro MFP M125nw?

Question

How can I update the firmware of my printer HP LaserJet Pro MFP M125nw? (this is important because of security issues)

The printer is installed on Windows, and HP Smart is installed and communicates with the printer.

I found the firmware install for Windows here: https://support.hp.com/us-en/drivers/selfservice/hp-laserjet-pro-mfp-m125-series/5396664

But when I launch the program, it doesn't detect my printer.

The steps provided on the HP web site don't work. HP virtual agent didn't help.

Answer 1

1. Connect the printer to a Windows computer directly via an USB cable. You can't upgrade via network.
2. If, when you connect the printer, a new CD drive called "Smart Install" appears in the explorer, you must disable the "Smart Install" feature in the configuration menus on the printer (Englsh/French).
   1. "Setup Menu Service" / "Menu config Service"
   2. "Service Smart Install" / "Service Installation Intelligente HP"
   3. "Off" / "Désactivée"
3. Disconnect & reconnect the USB cable
4. Download the latest firmware upgrade tool (HP_M125_126_FW_Update_20201012.exe) from: https://support.hp.com/us-en/drivers/selfservice/hp-laserjet-pro-mfp-m125-series/5396664
5. Launch the firmware upgrade