Great tormod, thanks! That was a real fun for me. Eventually I managed to waste completely the power part of DSO, so I just use it by supplying 4V to the switch directly from a standalone power supply. Anyways, I don’t need more for now.
By the way, if I were in the same situation and would need to solder a new microcontroller into place, I would consider replacing it with a pin-compatible model with more RAM for the sake of hacking 
What about running uClinux on it*
*Ref: AN3012
Hi tormod
The link to bootloader has died. Can you please upload it again? Also, is that possible that I also upload it somewhere?
Thanks,
A.
I have reuploaded it. I don’t know the terms for distributing this data, but I guess it is OK to let Nano owners reflash it.
Hi. I fired it too. After replace CPU I need origin bootloader. Link in post no longer valid. Where I can find it?