Yes you can. I did that many times back in the day. Regards,Bob Devries Dalby, QLD, Australia On 2017-09-26 10:58 AM, Rietveld Rietveld wrote: > Hi > > I upgraded my other coco3 to 512k. can I use two of the old 41464's to upgrade a 16k coco2 to 64k? > > Sent from my BlackBerry Passport Red Edition. > >