modify bootloader

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hi. can me? need modify optiboot bootloader way:
- if digitalread(a0) low (jumper on), after turn on atmega328p directly jump (through bootloader) program (bootloader not wait uart, not flash led, botloader "not works").
- if digitalread(a0) high (jumper off, input_pullup), after turn on atmega328p bootloader works.
can create hex file me? use atmega328p, 16mhz external crystal , arduino ide (classical arduino uno configuration). thanks.

hi - why not attempt yourself? if stuck, ask help. or if want you, expect pay.


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