Japanese charger firmware

Hello folks !
I know, and it has been confirmed by many Vectrix experts, there is a Japanese version of the charger firmware adapted to their 100V grid, that delivers a maximum output of 1000W to the battery pack. Unfortunately, my dealer hasn't the good version for my Runke charger (which cannot use the TheLaird firmware too).
So the only way for me to avoid cooking my battery pack is to get my hand on the appropriate Japanese charger firmware for my Runke (gold) charger ...
Does anyone in here can help ? I don't how to write "Visforvoltage" in Japanese ...

Thanks !