I downloaded https://wiki.seeedstudio.com/DSO_Nano_v3/ Official FW 4.32
unpacked the file
pressed the Down button and switch the Nano on
Copy the 201V4_32.hex file to the DFU V3_45_D device
The drive closes and when I reopen I the file has renamed to 201V4_32.err
How do I update the fw succesully?