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10 Firmware and OTA Updates
This section documents how to enable firmware updates in the design, whether it is serial or Over The Air (OTA)
10.5 Microchip Utility Tool
Microchip Utility Tool is windows based GUI Tool used for firmware upgrade.
10.5.1 Introduction

Introduction
1 Secure Boot and Signature Header Generation
2 Getting Started with WBZ351 Curiosity Board
This section covers evaluation board features and running the preprogrammed demo example
3 Getting Started with Software Development
This section gives a detailed information on the steps to install IDE, compiler, tool chain, BLE, Zigbee stacks and application examples on the PC.
4 Bluetooth Low Energy Applications
This section provides details on documentation describing the steps to test and develop the precompiled BLE application examples.
5 PIC32CXBZ3/WBZ35 Three-Wire PTA Coexistence Design
6 Getting Started with Zigbee Applications
7 Flashing hex from MPLAB DISCOVER using MPLAB IPE
This section provides a detailed procedure of how to download an already existing application hex file from MPLAB DISCOVER and flash the hex file into WBZ351 Curiosity Board using MPLAB IPE.
8 Adding Chip Peripherals
This section describes how to add analog/digital peripherals to the application
9 Low Power Design
This section explains in detail on how to enable the low power modes – Sleep/Standby or Deep Sleep/Backup modes in the design.
10 Firmware and OTA Updates
This section documents how to enable firmware updates in the design, whether it is serial or Over The Air (OTA)
- 10.1 Bootloader
- 10.2 Device Firmware Upgrade Over Serial
- 10.3 Device Firmware Upgrade Over BLE
- 10.4 Device Firmware Upgrade Over Zigbee Link
- 10.5 Microchip Utility Tool
  Microchip Utility Tool is windows based GUI Tool used for firmware upgrade.
  - 10.5.1 Introduction
  - 10.5.2 Tool Description
  - 10.5.3 Zigbee Over The Air Update Demo
    This section discusses the Zigbee Over the Air Update(OTAU).
  - 10.5.4 Serial Bootloader Demo
  - 10.5.5 Programming using IPECMD.exe
    Image(*.hex) file can be programmed into the device
11 Wireless System and Board Support Services
12 Application Timer Service
13 Support Documentation
This section has documentation that is generic and used as supporting document with the application example documentation.
14 Software API Guide
Microchip Information

10.5.1 Introduction

Microchip Utility Tool works with Microchip PIC32CX_BZ3/WBZ35 device family. This tool Works on windows platform and provides the following functionalities. The tool communicates with the device over UART/PKOB4.

tZigbee OTAU

Zigbee Server (e.g., Combined Interface Application) is connected to a Zigbee Network which has one or more Zigbee clients (e.g., Zigbee light application) and connected to the Tool through Serial Port. *. Zigbee image is sent by the tool, frame by frame (Payload Size <=48 bytes) to the server through serial port. Server manages the connection and send the received packets from the tool to the Clients till entire file is transferred. Last command is sent to reset Zigbee client device. Details of this functionality is provided in Zigbee OTAU section.

Serial Bootloader

Bootloader enabled device is connected to the tool through Serial Port. Device is put in DFU mode and Binary Image(*.bin) image is sent through Serial Port frame by frame (payload size = 4096 bytes). Details of this functionality is discussed in Serial Bootloader Section.

Programming *.hex file using MPLAB IPE

Image(*.hex) is available in the local drive can be programmed using MPLAB IPE. Details are provided in in Programming using MPLAB IPE section.

This tool has three tabs (Zigbee, OTAU and Serial Bootloader). There is a common section, related to UART functionality which is visible in all three tabs of the tool. The following sections provide details of each tab of the tool.