Firmwares with extended TX and RX range: <a href="https://github.com/Tunas1337/UV-K5-Modded-Firmwares">https://github.com/Tunas1337/UV-K5-Modded-Firmwares</a><p>Various miscellaneous modifications: <a href="https://github.com/amnemonic/Quansheng_UV-K5_Firmware/tree/main/uvmod_kitchen">https://github.com/amnemonic/Quansheng_UV-K5_Firmware/tree/m...</a><p>GNU/Linux ROM reading and writing tool: <a href="https://github.com/sq5bpf/k5prog">https://github.com/sq5bpf/k5prog</a>