If your iR-ADV 4245 is currently working perfectly and has no security or network issues, do not update the firmware. Only update to solve a specific problem.
Q: Can I update the firmware using a USB drive? A: Yes, you can update the firmware using a USB drive. Refer to the device's user manual for instructions. Canon Ir-adv 4245 Firmware Download
To download and update the firmware for your Canon imageRUNNER ADVANCE (iR-ADV) 4245 If your iR-ADV 4245 is currently working perfectly