Now I will prefer to wait till
1) Zephyr #BluetoothMesh stack allow us to save Provisioning & Configuration details on SoC flash
2) plus it should also take care of saving data like sequence no. & Model states on SoC flash on periodic basis
This is important, because Device firmware upgrade OTA should not changed those data if overall process is going to be automatic for end-user perspective.
There will be roughly four section in SoC flash-
1. for MCUboot
2. for flash memory (which will acts like eeprom)
3. slot_0 (current image)
4. slot_1 ( temporary location for new image after DFU )
This is not yet defined. Plus we don't know how to do DFU_OTA using Android or iOS App.
So let's us go step by step. Hope upcoming LTS 1.12 come up as complete solution.