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I really don't understand why they lock the hardware like this.
Dear manufacturer: are you committed to update your device for at least a decade and use open protocols? The answer is always no, so just allow us to void the warranty and install tasmota or esphome.
Electrical installations should be considered almost permanent, support should last decades. I'm not willing to replace a "smart" relay every few years because the app broken
Sometimes it’s “liability”
If putting bad software on it could possibly start a fire or electrocute someone, they’ll put in measures to kill it
A relay will do what a relay does, turn on and off. No matter what software you put on the smart plug, it can't really become too dangerous. Unreliable maybe, but most of these smart plugs are just that, a dumb relay controlled via a microcontroller
Fair.
I've had some of those and also some of the proprietary Tuya ones. The module has the same footprint so I ordered some ESP32 modules in the same form and used a hot air rework station to swap them. The modules are really cheap so I still come out ahead price-wise.
I think this one is a custom module, it solders into a slot on the main board vertically with pads on both sides of the modules bottom edge.
https://fccid.io/2AB2Q-LA02301/Users-Manual/11-User-Manual-4810925
Edit: fixed link