OpenBL602-Flashed Tuya Energy Plug Restarts Randomly When MQTT Added to Home Assistant

I flashed my energy plug with the OpenBL602
WIFI ok I can access.
Using this layout, everything running well, but when I try to use mqtt after add to HA, the device start to restart randonly, just when I add mqtt

I leave mqtt server in blank right now to still with the device connected


Current Device:

UpTime: 2046s

Build: Built on Dec 29 2025 20:06:55 version 1.18.233

IP Address: 172.16.0.180

MAC Address: -- -- -- -- -- ( I hidden this field)

MQTT Server: :1883

MQTT Topic: obk_tomada_01

Device Short Name: obl023D92B5

WEBAPP Url root: https://openbekeniot.github.io/webapp/

Chipset: BL602

Flags: 128

Version: 1.18.233

{
"vendor": "Tuya",
"bDetailed": "0",
"name": "Full Device Name Here",
"model": "enter short model name here",
"chip": "BL602",
"board": "TODO",
"flags": "128",
"keywords": [
"TODO",
"TODO",
"TODO"
],
"pins": {
"2": "Rel;1",
"3": "BL0937CF1;0",
"14": "BL0937CF;0",
"20": "LED_n;1",
"21": "BL0937SEL;0",
"22": "Btn;1"
},
"command": "",
"image": "https://obrazki.elektroda.pl/YOUR_IMAGE.jpg",
"wiki": "https://www.elektroda.com/rtvforum/topic_YOUR_TOPIC.html"
}

I have the same pin config on a BL0937 BL602 plug and will attempt to replicate this. What is the reboot reason given in GUI for you?

Added after 44 [minutes]:

it seems I can replicate this.

The real plug is disconnecting from MQTT often and eventually will reboot.

Reboot reason: BL_RST_SOFTWARE_WATCHDOG

Importing the same config into a BL602 dev board and setting up HA/MQTT also gives the same behaviour, but I can watch the full debug log.

there does not seem to be any crash output but simply straight into a reboot



stop bl0937 driver and MQTT is stable again, no reboot.

hmm

Added after 2 [hours] 34 [minutes]:

try version 1.18.209. I am not seeing reboots so far with this. 1.18.210 introduced lots of changes and I get reboot behaviour with it

https://github.com/openshwprojects/OpenBK7231T_App/pull/1853/files

>>21794416

When I arrive home, I'll do the test.

Thanks for replicating.

It's my first time with OpenBK, one of the plugs I replaced the module because I broke the reboot pin and the other I applied the OpenBK and you helped me too at the other post! Thanks for your support.

Added after 11 [hours] 21 [minutes]:

It's work flawless now. Thanks for your support again

after update, to 209 the system works!

should be good to go to the latest once https://github.com/openshwprojects/OpenBK7231T_App/pull/1925 is merged

>>21799567 Thanks, man! It's the BL602 with the BL0973 problem I saw there.

>>21799567 I'm running the version 234 and looks like it's fixed.