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

Solution 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