*User manual and installation method for the environment: https://drive.google.com/drive/folders/1YPBhnd_4Sxf2BITQ9yRKy4cm7vtMB4Ss; ★ CP210x driver: http: //www.heltec.cn/download/CP210x/CP210x_VCP_Windows.zip; http: //www.heltec.cn/download/CP210x/Mac_OSX_VCP_Driver_10_6.zip; http: //www.heltec.cn /download/CP210x/Linux_2.6.x_VCP_Driver_Source.zip; ★ bug report: https: //github.com/Heltec-Aaron-Lee/WiFi_Kit_series/issues.