“Offsets, ASCII… and a Few FFs That Pay Like a Week’s Salary” Most people look at a hex file and see chaos. Rows, columns, offsets, ASCII values… all looking like a game of checkers with no instructions. But when you understand what you’re looking at, everything changes. Today one of our students repaired a Ford BCM using one of the simplest but most powerful techniques in the trade: manual hex editing. Sometimes all it takes is spotting the correct offset… typing a few FF FF FF FF… saving the f