Which STM32 flasher to use for STM8

[Konami]

Hi all, I'm working on a part that has implemented something very similar to the ST-provided user bootloader for the STM8. I've tired uploading a binary using several versions of the STM flasher but none of them seem to work. Is there a script available intended to work with this bootloader?

https://my.st.com/content/my_st_com/en/products/embedded-software/mcu-mpu-embedded-software/stm8-embedded-software/stsw-stm8006.license=1613127056306.product=STSW-STM8006.version=2.1.0.html#overview

[Konami]

This ended up working for me:

https://github.com/gicking/stm8gal