No bootloader Manta M4P-CB1 issue during set up

[Park8706]

Hello, I am having an issue where I am reaching the stage where I am setting up the firmware for klipper. I am using a terminal and get to the makemenu command. It pulls up the settings which all match that shown in the install documentation except for the boot load offset. Instead of the desired setting it is saying "no bootloader". I am not sure what I might be missing or have done wrong. Any help would be appreciated.

[Pneumanifest]

Down to highlight that option, then use the space or right arrow to go into it. Then select the option in there and again space or right arrow to select. Left arrow to go back to previous menu page.