# open-apt-flash: reconstructing the APT 860C UART flasher

> open-apt-flash reconstructs the UART bootloader exchange used by APT Burn Tools to flash the APT 860C e-bike display. Its Python library, CLI and GUI implement 57600 8N1 communication, page framing, checksum, acknowledgments and a sync handshake. The author reports comparison with original-tool traffic and a complete flash on a live display.

- Type: Case study
- Targets: Protocol
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-06
- Added to the catalog: 2026-11-08
- Original resource: <https://github.com/cakebomb999/open-apt-flash>
- Primary source: <https://github.com/cakebomb999/open-apt-flash/blob/f5360f2c23cf309754f3b74758af7980a68c938a/README.md>
- Catalog page: <https://awesomerea.org/resources/open-apt-flash-case/>
- Record JSON: <https://awesomerea.org/resources/open-apt-flash-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/open-apt-flash-case/index.md)

## Requirements & limits

- **Prerequisites:** Python 3.11+, pyserial, a serial connection to an APT 860C, and a firmware image positioned for 0x08004000 are required for hardware flashing.
- **Testing evidence:** The author reports simulator tests and a complete 145-page flash on a live 860C.
- **License:** MIT license.

## Primary sources

1. <https://github.com/cakebomb999/open-apt-flash/blob/f5360f2c23cf309754f3b74758af7980a68c938a/README.md>
2. <https://github.com/cakebomb999/open-apt-flash/blob/f5360f2c23cf309754f3b74758af7980a68c938a/docs/PROTOCOL.md>
3. <https://github.com/cakebomb999/open-apt-flash/blob/f5360f2c23cf309754f3b74758af7980a68c938a/docs/REVERSE-ENGINEERING.md>

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## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.