我们项目需要完成这样的功能，在内部以太网留有一个网口，需要一个4g路由器完成从外网的服务器拉取数据，再推送给内网的服务器，数据协议是在TCP/IP协议基础上自定义协议，咱们的设备是否支持这样的二次开发

IOT设置成TCP-SERVER后，外部连接它每过一分钟就自动断开，是否时TCP保活时间间隔引起的，还是说只能接受TCP短链接

设备频繁重启 在线时间不超10min

After firmware upgrade the device does not boot. Only power led is on the rest are off. What is the procedure in this case? Phone number is wrong :( Right one is +27833629470 Thanks David

After firmware upgrade the device does not boot. Only power led is on the rest are off. What is the procedure in this case? Phone number is wrong :( Righ one is +27833629470 Thanks David

HF2211 is AP+STA mode. HF2211 is connected to the LTE modem, and HF2211 and Arduino board are connected by wifi for modbus communication.However, the problem seems to be that once the LTE modem loses its Internet and comes back to life, the HF2211 connection has a problem as shown in the attached picture.AP+STA mode is not working properly, and the internet is not working on Arduino board. At tim