Firmware Updates; Firmware Flashing Using The Production Interface; Firmware Update Using The Proteus-Iii Ota Bootloader - We PROTEUS-III User Manual

WIRELESS CONNECTIVITY & SENSORS
User manual Proteus-III

14. Firmware updates

All products will experience maintenance, security and/or feature updates from time to time.
For the standard products these are maintained via the PCN process.
Customers can request the creation of a customized product including a "firmware freeze" to
ensure that they will receive their verified product even if the standard product is updated.
14.1. Firmware flashing using the production interface
Most Würth Elektronik eiSos wireless connectivity modules offer a production interface (e.g.
JTAG, SWD, Spy-Bi-Wire) for module flash access. Depending on the product, this interface
can be used by customers to erase the entire chip and install their own firmware.
Using the production interface is not intended to perform updates of Würth Elektronik eiSos
standard product firmware.
Production firmware images and binary files for Würth Elektronik eiSos wireless connectiv-
ity modules are not publicly available.
Any certification, declaration, listing and qualification becomes invalid if the pro-
duction interface is used by a customer. Some products, in their documentation,
state exceptions to this invalidation under certain conditions.
Customers shall make the product specific firmware update interface available to their applica-
tion. These methods will use a wired (UART, SPI, etc.) or wireless (Bluetooth
communication interface of the module to allow updating the product's firmware. Details are
described in the next sections.

14.2. Firmware update using the Proteus-III OTA bootloader

This method offers a possibility to update the firmware over the air (OTA). Therefore, the Nordic
®
nRF52 Bluetooth LE DFU secure bootloader is integrated into the Proteus-III's firmware, which
will communicate over the Bluetooth
erating mode besides the normal operating modes mentioned before. For this reason, a .zip-file
can be provided, which contains all (bootloader, Softdevice, application) parts of the firmware
in an encrypted and authenticated package.
Before starting any update procedure, please check whether the installed firmware can be
updated to a new one:
Order code 2611011024000
Version 1.8 , July 2022
®
LE interface. The OTA bootloader mode is a distinct op-
®
LE, Wi-Fi, etc.)
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