Bootloader For ATmega 168 at 7.37 Mhz.

If you still want a bootloader for 7.37MHz, it is actually fairly trivial to add an entry to the optiboot make file.

I have compiled one for you:
7.3728MHz (I am assuming it is this as it is the most likely standard crystal value - Baud rate crystal)
57600Baud

And the boards.txt entry:

##############################################################
atmega168f737.name=ATmega168 at 7372800Hz

atmega168f737.upload.protocol=arduino
atmega168f737.upload.maximum_size=14336
atmega168f737.upload.speed=57600

atmega168f737.bootloader.low_fuses=0xfd
atmega168f737.bootloader.high_fuses=0xdd
atmega168f737.bootloader.extended_fuses=0x04
atmega168f737.bootloader.path=optiboot
atmega168f737.bootloader.file=optiboot_atmega168_737.hex
atmega168f737.bootloader.unlock_bits=0x3F
atmega168f737.bootloader.lock_bits=0x0F

atmega168f737.build.mcu=atmega168
atmega168f737.build.f_cpu=7372800L
atmega168f737.build.core=arduino
atmega168f737.build.variant=standard

##############################################################

Just put the hex file under /bootloaders/optiboot/

optiboot_atmega168_737.hex (1.35 KB)