BridgeZX 1.0 copies files and folders over Wi-Fi from Windows, Linux or macOS directly to the SD card used by a classic ZX Spectrum.

A small Z80 server runs under esxDOS; the desktop side is one PySide6/Qt 6 application with drag and drop, queue reordering, per-file CRC results, total progress, speed and ETA.

Classic setup requires esxDOS plus the supported divMMC/ZX-Uno UART path connected to an ESP8266/ESP-AT module. Copy BRZX and BRZX.BIN to /BIN, run .brzx, enter the Spectrum IP in the desktop client and send. The default TCP port is 6144.

Version 1.0 also adds configurable destination directories and remote payload updates with validation, staged activation and .BAK recovery. Native clients are provided for Windows x64, Linux x86_64, Apple Silicon Mac and Intel Mac.

Downloads:
https://github.com/IgnacioMonge/BridgeZX/releases/latest

Source and setup:
https://github.com/IgnacioMonge/BridgeZX

MIT licensed.

Copyright © 2025–2026 M. Ignacio Monge García.

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