Dear supporters. We have reached a partial success. For Hyundai Ioniq5 and Kia EV6 there is a BMS update available which adds the preheating feature. Here in Slovakia it is available for 2022 models as a paid update for 50-60 euros. There is no information about such an option for our older 2019 - 2022 Hyundai Kona and Kia e-Niro.

https://insideevs.com/news/617611/kia-ev6-cold-fast-charging-update/