new uses SDK 17.0.2, SD 7.2.0
old target used SDK 15.2.0 and SD 6.1.1
Attempting to update BL, SD, and App over DFU.
1. If merging all new BL settings with SD, BL, and App then JFlash - works.
2. If JFlash new BL and SD, then DFU to DfuTarget with App, that works.
3. If DFU new BL and SD over old BL, SD works and shows as DfuTarget on nRFConnect, but after successfully sending App, does not work.
within fds_init(), pages_init() returns NO_SWAP
