8MHz External Crystal Bootloader?

Hello there,

All I find in the Google is the 8MHz Internal Crystal Arduino Optiboot Bootloader.

Are there any one with the 8Mhz External Crystal? As I have lost the copy of the Atmel Studio, downloading the big file seems difficult due to my slow internet speed.

Or, are there any guides to modifying the bootloader code (I suspect it's in a C file or something) and just rebuild it?

Thanks.

Use the same bootloader as you would for 8mhz internal oscillator (it's not a crystal btw).

Just need to make new entry in boards.txt that uses the 8mhz bootloader but the fuses from the 16mhz board

DrAzzy:
Use the same bootloader as you would for 8mhz internal oscillator (it's not a crystal btw).

Just need to make new entry in boards.txt that uses the 8mhz bootloader but the fuses from the 16mhz board

So all I need to do is to change the fuses in the 8mhz bootloader boards.txt? The fuses also determine which oscillator to use inside?

Here is a bootloader I use for 3.3 V 8 MHz

Roger