C00255979 the low end adaptor for the cheapo range!
AFAIK it will also work on the cookers and, hopefully, all future boards on all products. Any Indesit parts supplier should be able to supply for you, I paid £49+ £36 odd back in June.
no, you dont need a laptop (if only!). You ned to buy the software in the form of a smart card for each model variant as and when you need it, and not, they cannot be used more that once. AFAICT, the smart cards are marginaly cheaper than the old EEproms but a lot less fiddly to fit. Only done one myself as yet though. there is a whole thread on this subject here. Just the reader will do until you come across one of the low end models that doesnt have the board at the back when you need to use both.