Tutorial on flashing FW 1.02 onto KISS 24a esc's that currently have 1.00 or 1.01 FW using USB UART.
ESC FW 1.00 and 1.01 do not have a bootloader installed on them like FW 1.02 does. Flashing older versions with 1.00 and 1.01 through a USB UART installs the bootlaoder and allows you to do and further Upgrades via the KISS FC GUI. For an explanation on how to upgrade 1.02 fw esc's using the GUI please check out this tutorial. https://www.youtube.com/watch?v=975_EYhkg5w
KISS 24a ESC FW properties
FW v1.00: Original FW
FW v1.01: Fixed an issue for those running 4KHz FC's
FW v1.02: Bootloader added to allow flashing via KISS FC
FW v1.03: Updates including Smoother power, more power, more efiicent and bug fixes including possible "dead duck" issues