Just to stop me from fucking up my shit, Mariko is xaj7 005... right? That needs the flex v2?
I do hope that 14€ Aliexpress "ready to go" board will work and has the resistors in place already, i honestly cant tell.
Are those 32€ Listings on Aliexpress all you need to get a modchip working or do you need something else? Their listings are sparse on information...
Alternatively, there seem to be a few ready made picofly boards on there, marketed to switch lights, would those work with a normal switch?