When JN5169 works as coordinator, how to update new program for JN5169 via remote updating
You can use JN-AN-1216 for Coordinator and JN-AN-1218 for Light node.
Everything is in Document.
Could you please check in the ZigBee 3.0|NXP page the JN-AN-1218? I believe you will find there a good reference for the OTA updating.