Documentation entry

Repository scope

This repository is a historical index for A9/A9G AT firmware documentation and GitHub Release assets. It contains no firmware source or build recipe.

Recommended reading order

1. Read the root overview for scope and current official product documents.
2. Read AT-Command-Set.md for selected Ai-Thinker extensions. Do not treat it as a complete AT-command reference.
3. Read Change-History.md and match its version with the module output from ATI.
4. Consult the historical Chinese feature notes and hardware FAQ when applicable.
5. Obtain preserved firmware assets from the V1.6RC release.

Known documentation limits

• 功能说明.md contains historical, unresolved download placeholders.
• TODO-List.md is empty in the preserved repository history.
• The AT command file covers selected extensions only.
• No current carrier interoperability, hardware, flashing, or firmware-binary test is represented by these documents.

For SoC application development, leave this documentation path and use the GPRS C SDK.