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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 also to @mrkusypl for his valuable help, as well as to everyone who has contributed to the project from time to time.
Starting with v6.0.0, the firmware is distributed in four official editions that share the same core but target different uses. Fusion is the recommended balanced edition for everyday use; FieldOps adds RescueOps, FoxHunt, and Beacon; Transfer adds AirCopy and Beam; and Labs adds the experimental overlay-app platform.
If you are new to the firmware, a good reading order is: Getting started, Programming with CHIRP if you manage the radio from a computer, Radio operation, Scanning, Menu, then Button functions. If you prefer visual walkthroughs, see Videos and tutorials.
If you are upgrading from an earlier build, see Recent changes for the latest stable v6.1.0 changes and the earlier v6.0.0 highlights.
[!WARNING] THIS FIRMWARE HAS NO REAL BRAIN. PLEASE USE YOUR OWN. Use this firmware entirely at your own risk. 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 would need to buy another radio.
You have been warned. That said, have fun.
v1.6.0 recovery tools: UV StudioYou can also use the F4HWN YouTube channel as a companion to this wiki.
Many videos are in French, but subtitles can often be enabled, and some videos may also offer English dubbing. For a short explanation of how to use the channel together with the written documentation, see Videos and tutorials.