Has anyone ever fixed or replaced an electric hydro booster?

My break pedal keeps going to the floor and won’t hold any pressure. I’ve bleed it multiple times and adjusted the rear brakes and nothing seems to fix it. Also does anyone know if the 3rd gen Tacoma hydro booster will work on a second gen? They look exactly the same as mine in every way. I keep seeing them on eBay for half the price of a new one

 

The 3rd gen unit is different, while the hydraulic unit might be the same the ECU is for sure different. The ECU part number has to match your original or you will have issues.

I'm not sure if it's possible to swap the ECU to a different hydraulic unit.