Bootloader & OTA Specification

Complete specification for the device bootloader, firmware update mechanism (DFU), and over-the-air update flow — memory partitioning, image signing, and rollback strategy.

Why It Matters

A properly specified bootloader and OTA system is critical for field-deployed devices. Mistakes here can brick devices. This document ensures your update mechanism is robust and secure.

What's Included

Memory partition layout
Boot sequence
Image format and signing
DFU transport (BLE/cellular/USB)
Update state machine
Rollback and recovery

How It's Generated

1

AI Research

Gemini with Google Search Grounding researches current SDK documentation, API references, and best practices for your specific hardware platform.

2

Document Generation

GPT-5.1 generates a comprehensive Bootloader/OTA using the research context, tailored to your project requirements and hardware.

3

Review & Edit

Review the generated document, make edits directly, or use AI refinement to adjust specific sections with custom instructions.

4

Export & Use

Download as part of your project bundle. The document integrates with all other generated docs and code scaffolds.

Other Document Types

PRD

Comprehensive document defining what your firmware product needs to do — functional requirements, non-functional requirements, power budgets, user stories, and acceptance criteria.

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Architecture Doc

High-level system design showing how firmware modules interact — task architecture, communication patterns, memory layout, and dependency maps with Mermaid diagrams.

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HAL Doc

Defines the interface layer between your firmware application and hardware peripherals — GPIO, SPI, I2C, UART, ADC drivers with clean API definitions.

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State Machine

Formal definition of your firmware's state machine — states, transitions, guards, actions, and error recovery paths visualized with state diagrams.

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Context Bundle

Machine-readable JSON file containing all project context — hardware specs, pin mappings, library versions, and configuration — optimized for AI coding tools to consume.

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Impl Plan

Phase-by-phase development roadmap breaking the firmware project into sprint-sized work packages with dependencies, milestones, and effort estimates.

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Frequently Asked Questions

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