This is PIC code and not flash code!
I haven't dump the flash yet. PIC dump is ASM code that can be disassembled with dev tools for microcontrolers (
www.microchip.com).
But I haven't got a clue what's used for in 4100, maybe some coder here would tell us from its disassembly.
As I told I haven't dump the flash yet... I don't have the knowledge nor the tools to decompile it or make a proper patch. I can only provide assistence for testing if someone [with a bit of free brain capacity] would try to make the LBA48 patch.