Hello Didier, That is the U222 32 kb EPROM in a Fluke 8842A/AF DMM. It is Ver3.1 Fluke part number 765271. It is a binary dump of a working ROM. BTW, I could not find any group in Yahoo for Fluke meters and we were OT on the tekscopes group, so I started one. As we get images of these ROMs, we can keep them on both locations. They are in standard 2732A EPROM's and they are beginning to fail. The parts are not available from Fluke. Regards, Tom Miller WA3PZI