Currently, J-Link probes that fail to open do not show up as inaccessible in the probe list. Instead, they just have their serial number and device identifier left blank.

Listing probes should instead yield Results, so that the calling code can act properly, by:

• selecting the only accessible probe when there is more than 1 (but only 1 can be opened successfully)
• providing guidance to th

It would be nice to have something like --verify which reads back all written flash and checks it was written correctly. In GDB you can do this with compare-sections for example.