12.3.5 BLE OTA DFU Image Distribution Procedure

The following steps explain the BLE OTA DFU Image Distribution Procedure:
  1. Encrypted and Signed BLE OTAU bin file generation using signature and OTA configurator from MPLABX Tools device properties. Place the OTAU file in OTAU manager.
  2. Transfer the OTAU Flash image over BLE OTA profile/service to OTAU Target
  3. Image is decrypted using AES Key in Target and stored in Embedded Flash Slot1
  4. Once the complete image is received, the device is reset. Bootloader will copy new image from Slot1 to Slot0 after image authentication is done.
Figure 12-42. BLE OTA DFU Image Distribution Procedure