Download the following firmware file to your computer.
Please make sure you have the downloaded firmware file on your computer.
• D5600_0120.bin (the camera firmware)
Using a card slot or card reader, copy “D5600_0120.bin” to a memory card that has been formatted in the camera.
Note: Be sure to copy the firmware to the root (top-most) directory of the memory card. The camera will not recognize the new firmware if it is placed in a folder under the root directory.
Insert the memory card into the Slot on the camera and turn the camera on.
Select [Firmware version] in the [SETUP MENU] and follow the on-screen instructions to complete the firmware update.
Once the update is complete, turn the camera off and remove the memory card.
Confirm that the firmware has been updated to the new version.
Note: Updates can be performed for you by a Nikon-authorized service representative.
Is there a specific step that is giving you trouble? Do you have a card reader that can put the software onto the memory card that goes into the camera? That is needed. Are you sure you don't already have the latest firmware?