This is the easiest method and can be done from your computer.
Insert the USB into the iR 2425. Follow the on-screen prompts under the Service Mode or Update menu to initiate the flash. Troubleshooting: Common "Fixed" Errors canon ir 2425 firmware download fixed
Ensure you aren't downloading firmware for the iR 2425i if you have the base iR 2425 , as some regional specifications vary. This is the easiest method and can be