I received my DSO Nano v1 today purchased through eBay from a USA seller. The DfuSe bootloader didn’t work. I tried converting the BenF V3.64 to HEX with DfuSE file manager, but even though I got RDY indication on bootload, the old, as supplied app showed on screen. Found this string on the forum. The zipped .HEX file versions on page 5 of this string are what I needed. I tried moving both .HEX files into the virtual USB bootloader at the same time. APP showed RDY, but LIB showed ERR. When I turned the unit back on got blank screen and got nervous. Went back to the virtual USB bootloader, but I moved only one .HEX file at a time. Both then showed RDY as they were loaded. When I turned the unit back on I was greeted with the BenF welcome screen.
Thanks for all the help. I’d have been totally lost and stuck with the BS firmware as supplied without this forum.