Reading through the Bluetooth® Low Energy Application Developer’s Guide.
There should be an example project that implements OTA BLE through a bootloader.
The OTAP Bootloader project and source code can be found in the \boards\<board>\wireless_examples\framework\bootloader_otap\ folder.
Does this example exist for the MCXW71 / KW45 chips?
Which SDK would have this example that could be most easily ported?