Any version will work without using the MCU, its just what you want
1.0 is not using LVP and is high/low capable but you cant use low
1.2 voltage stabilized
1.7 voltage stab and LVP
2.0 LVP and high/low which is not used

Doing this Mod on the driver takes like 35-40 minutes if you do it slowly and are experienced with it
I have no problem modding a FW3A for others if they order just a new light to me

I sent out today quite some drivers and Aux boards