Offical release stable version Note:Keep both units the same version Change log vs V1.72_build002(Release): 1.Rotary encoder driver has been optimized to be smoother and more accurate (no lost steps). 2.Total RF GAIN = 1/4 RF GAIN setting when AGC is off to prevent sudden volume increase. 3.Rx volume stepping has been optimized. 4.MIC GAIN has been lowered to avoid picking up too much background noise.