I'm developing code for a K20 processor and would like to use my FRDM-K22F board to program it, however none of my attempts have been successful.
I cut the trace underneath J4 as described in the documentation and it appeared that the programmer was still talking to the on-board K22 rather than my external K20. I removed the SWD_DIO pin on the K22 and now the programmer doesn't work at all.
It it possible to use the FRDM-K22F to program an external K20? If so, what have I missed?