Firmware Update Process#

  1. After enabling Firmware Fallback feature, the SiWG917 supports only host/M4 based Over the Air Firmware Updates.

  2. The M4 and NWP Firmware Image Backup location in the flash map is rearranged to store slot firmware images, hence the conventional safe upgrade cannot be used.

  3. Combined firmware upgrade illustrated in AN1431: SiWx917 Firmware Update App Note is not supported.

NWP Firmware Update Process#

SiWG917 NWP firmware update, via standard Firmware Update vs Firmwware Fallback:

8 MB Flash map with firmware fallback feature8 MB Flash map with firmware fallback feature

M4 Application Firmware Update#

SiWG917 M4 firmware update, via standard Firmware update vs Firmware Fallback:

Here, current active slot for M4 and NWP is considered as slot-A for reference.

8 MB Flash map with firmware fallback feature8 MB Flash map with firmware fallback feature