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This document covers the design approach used for upgrading firmware for RPI RDK Broadband devices using XCONF server & TFTP/HTTP protocol

Limitations

1. RPI Box needs reboot (automated) after booted for first time which will create two more partition table for upgrade

2. For multi boot, RDKV image can't be flashed in bank 0 if RDKB image is flashed without resizing bank 0 rootfs partition. Since size of RDKB rootfs is lesser than 500 MB which is not suitable only for RDKV which expects more than 1GB. So RDKB rootfs partition needs resize suitable for RDKV multi boot whose procedure is mentioned in user manual RDKB Firmware Upgrade in RPI - User Manual - 2019 M7TBD

Design approach

On considering above described requirement,design approach for RDKB firmware upgrade for RPI device as follows

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After booting we will be upgrading the new image

Sequence Diagram

Workflow

TBD