Hi
I just bought me a DSO Nano V3.
I’m a previous owner of a v1 but since the USB connector fell off I thought I get a new one 
So to my problem, as far as I understand I need this firmware for my device. So I have it downloaded.
Some information:
Version shows V. 4.28.
Serial: E3CCCAD8
Licence: 340E242A
Device Firmware upgrade: V3.29D
But a problem arises when I put it in firmware mode by pressing arrow down and turning it on. The virtual disk appears only a few seconds, then it’s gone. Only shows up as a Removable Disk F: Tried several cables and several computers from Windows 7 to Windows 8. Same happens on every computer, so I’m kind of ruling out my computers.
Any ideas?
EDIT:!
Just for the heck of it, tried it on the second computer again, and to my suprise the virtual disk stayed.
So I got it upgraded. Do I understand it correctly if I only need the one hex file? BENF_P2.hex