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Armel FAUVEAU edited this page Dec 13, 2025 · 3 revisions

Welcome to the uv-k1-k5v3-firmware-custom wiki!

About this firmware

This firmware is a fork of the F4HWN custom firmware. It extends the work originally done for the UV-K5 V1 (DP32G030 MCU) and adapts it to the newer UV-K1 and UV-K5 V3, which are based on the PY32F071 MCU. It is the result of joint work by @muzkr and @armel. Many thanks to @Tunas1337 for his valuable help.

The Fusion edition brings together, in a single firmware, all the different editions that were previously released separately for the UV-K5 V1. In other words, instead of choosing between multiple specialized firmwares, Fusion integrates all features into one unified build.

Warning

THIS FIRMWARE HAS NO REAL BRAIN. PLEASE USE YOUR OWN. Use this firmware at your own risk (entirely). There is absolutely no guarantee that it will work in any way shape or form on your radio(s), it may even brick your radio(s), in which case, you'd need to buy another radio. Anyway, have fun.

You have been warned. That said… have fun.

Documentation

The complete documentation is available in the F4HWN custom firmware repository.

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