Olimexino328 @ 14.4756 Mhz bootloader

[.Costin]

Hi all..does anyone know a proper bootloader as the title says ? I want to change the actual crystal (16 Mhz) to an error free baud generator crystal to get reliable rs485 comms..Thank you..

[tkoskine]

You can recompile Arduino bootloader, just change the frequency from Makefile.

In the past, I have used the older (not optiboot) bootloader from Arduino/hardware/arduino/bootloaders/atmega; you can find compiled .hex file (for 14.7456 MHz) from http://files.tkoskine.me/arduino/14mhz_bootloader/ (Note: it has been few years since I last time used that bootloader, it might or might not work on your Arduino/atmega328p).