Thanks! You are correct, when I did a dump with `xxd IMGP0847.DNG > output.hex` it wasn't showing up for some reason.... But your command worked (though my dd doesn't like hex values so I needed to get decimal via printf "%d\n" 0x3E40B).
Curious if you (clearly smarter than me) know why it didn't show correctly in the xxd or hexdump for the file. Would love to learn.
Did you find a 02 at 3E40B? I found 01 at 2FD00, but there was no 3E40B byte position entry.
I did find something similar at 00003e40: 00003e40 02 00 04 00 0a 00 00 00 30 01 00 00 00 00 00 00 |........0.......|