Alternative firmware for Tuya zigbee devices

Hardware
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I haven’t seen any post related to this project here, but there are those guys here who have actually succeed to build & flash alternative firmware for some Tuya devices based on TeLink chips ( mostly all zigbee ones )

Theres some Tuya fw from another project too here: GitHub - pvvx/ZigbeeTLc: Custom firmware for Zigbee 3.0 IoT devices on the TLSR825x chip

Also this one has made a serial flasher: GitHub - Suxsem/Telink-Zigbee-serial-flash-tool

I’d love to see most of my Tuya devices having some open source fw.
OTA can even be used to flash legacy fw if done properly.

Opening a thread on it if some dev want’s to give a look too. I’ll order few spare of the device I already own, I don’t want to mess up my running install.

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That’s interesting
For wall switches, could decoupling feature be added as well?
Or is it limited to that list of devices for now

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Indeeed! As it is software only (every device compatible with esphome for example can do this!)

Sure. If your device (with sh°tty vendor firmware) isn’t supported by third party firmware you will still have limited functions!

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That is great !

I was most disappointed that Tasmota and ESPhome projects choose to ignore all the newer chips becoming common in cheap off-the-shelf devices with Tuya firmware.

I came across another project LibreTiny with seemingly same objective, but focussed on BK72xx and RTL87xx chips which use Wi-fi. I assume that zigbee uses different radio hardware, but maybe there are other parts of LibreTiny which might be helpful to tyuaZigbee developers.

LibreTiny made a fork of ESPhome to add support support for the BK72xx and RTL87xx chips, and finally the code has been pulled into ESPhome. Again, hopefully tuyaZigbee can benefit from libreTiny’s experience … and we can move ESPhome to eventually support all the tuya devices.

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I don’t know how similar the wifi chips are to the zigbee ones. Maybe you know more.

LibreTiny is already part of esphome.

There are also espressif (maker of esp8266/esp32) esp32 variants with a zigbee radio in - possibly to be ready for matter?

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Funny thing, most devices from this project are actually BLE sensors they’re flashing with custom zigbee fw. Radio chip is the same for BLE/Zigbee ( + Thread)

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Here is an amazing project with custom firmware for Tuya switches that can be flashed OTA:

Another project for the SONOFF ZBMINIR2, flashing with debugger and soldering:

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Ressurecting an old thread here but wondering if this firmware has performance advantages over the stock Tuya code? In particular, for Zigbee devices does it reduce the lag?

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I’m using this project mentioned earlier, it is for thermometers and I can tell you, it is working great. First of all, it uses normal zigbee bindings and reporting so I can setup it to whatever I like (not that stupid crappy tuya specyfic stuff that you cannot change). Second, it is very consistent and predictable, for ex. it will always report sensor changes exactly as I set it in reportings (tuya reporting is very unpredictable, sometimes it works fine, and sometimes it can hang for several minutes/hours).
So basically, I think any custom firmware will be better than tuya.

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Yes. Custom firmware fixes all performance issues of Tuya devices, but it can’t help with their low range.