Model 1S (YKDP13YL) Firmware 2.0.27
None of the stuff you suggest works. I can ping the Yeelight, but it constantly drops off Homekit and is shown as “disconnected” in the Yeelight app.
MrMuscle:~ mnewman$ ping -c 3 192.168.0.200
PING 192.168.0.200 (192.168.0.200): 56 data bytes
64 bytes from 192.168.0.200: icmp_seq=0 ttl=255 time=6.290 ms
64 bytes from 192.168.0.200: icmp_seq=1 ttl=255 time=3.423 ms
64 bytes from 192.168.0.200: icmp_seq=2 ttl=255 time=10.031 ms
--- 192.168.0.200 ping statistics ---
3 packets transmitted, 3 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 3.423/6.581/10.031/2.706 ms
I’ve also used Wireshark to verify that network packets are being sent to the Yeelight and that the Yeelight responds. This is not a problem with my network. Every other device (including a Koogeek bulb) work fine. It’s only the Yeelight that becomes unresponsive.
I have sent Wireshark packet sniffing files, log files and other documentation to your support email, but no one responds.
You need to provide us with firmware that actually works.
See this thread: https://forum.yeelight.com/t/topic/17618