How can I repair this washing machine that I think has had the chip wiped?
Just wanted to leave an update, I replace the PCB with another from a completely different model that had AG+. 

I thought it wouldn't work at first because I didn't have the Silver Nano extra pcb and for my surprise it did work so if anyone is having the same problems of finding a replacement for their model then find one that is the equivalent of yours and it will work.
I don't know if the same is possible with the dryer versions so only try with those if you have absolutely no other choice.

My washing machine is a Q1044, portugal model - original PCB model is MFS-Q1044-00 - and the PCB that I used for replacement is from the Polish (or russian, I am not quite sure now) model F1245AV - PCB model MFS-1245A-00.

All connections fit perfectly and everything works well, except for the Silver Nano technology which I wouldn't want either way.