Quansheng UV-K5 - IJV Firmware Manual. Programmer IU0IJV has developed two different firmware for the Quansheng UV-K5, K5(8), K6 and k5-plus radios. 🔸 The first firmware is stopped at version 2.9R5. This is an optimised and definitive firmware, designed for the average user. It includes many interesting functions for classic radio use.