So I jumped in another rabbit hole with flashlights. Nothing new
https://abload.de/img/lt1anduril26yjzf.png
https://anduril.click/flashing/avrdude.html#updating
https://launchpad.net/flashlight-firmware/trunk
1942 sudo apt-get install bzr
1943 bzr branch lp:~toykeeper/flashlight-firmware/anduril2
1944 cd anduril2/
1947 sudo apt-get install flex byacc bison gcc libusb-dev libc6-dev
1948 sudo apt-get install gcc-avr avr-libc binutils-avr
1949 sudo apt-get install avrdude avrdude-doc
1950 sudo chmod u+s $(which avrdude)
2028 cd ToyKeeper/spaghetti-monster/anduril/
make
2031 avrdude -p t1634 -c usbasp -n
2035 avrdude -p attiny1634 -c usbasp -U flash:r:old-firmware.hex:i
2038 avrdude -p attiny1634 -c usbasp -U flash:w:anduril.emisar-d4sv2-tintramp.hex