The origional UV-K5 ( now referred to a Version 1 [v1] ) utilised a DP32G030 MCU. Supply of the DP32G030 became difficult so a replacement processor: the PY32F030 was utilised, resulting in v2 of the UV-K5. A limited number of the v2 were produced before the processor was upgraded to the PY32F071, resulting in v3… Read more UV-K5 Versions – Support for Alternative Firmware