[BK7231N] 6W RGBCCT E14 LED candle bulb with reassembly (Immax Neo LITE)

Brand: Immax
Model: MK-C37-5LU-20SMD-DLV01
Chip: BK7231N [CBLC5]
Local Vendor: https://www.immax.cz/immax-neo-lite-smart-zar...t-barevna-a-bila-stmivatelna-wifi-c37-p11837/

I've got 3 of these bulbs and wanted to throw Tuya where it belongs. So I bought one more for disassembly, because I didn't know if I'll be able to reassemble it again. I dumped the FW, sent profile request for Cloudcutter and waited. Glad I bought one, because it was impossible to reassemble. If you disassemble it the wrong way.

After a month of waiting, I've lost my patience with Tuya and finally decided to flash it manually. I bought one more for another test and sure enough I found a way to not destroy it.

You will need point tip soldering station and steady hand.

Here is the bulb:


Opening it is quite easy. You can press around the seal and this will loosen it, once you can rotate it, just pop it off.


Now the hard part. You cannot just rip it off, because the neutral AC wire is pushed between the plastic and thread. If you pull it out, you won't be able to reassemble it. Maybe if you soldered a wire directly to the thread from the inside.
The second wire is pushed under the bottom pin - if you rip off this one, it's still possible to put it back, because that pin falls off.

So, what now?
First press on these pins with something to push them down, this will give you more place to not rip off AC wires:

Now get something thin that will act like a hook, I used thin allen key.
Stick it in the WiFi antenna hole:

Now you can pull hard on it to pop the module off. I had to hold it with pliers and pulled really hard.
Be careful to not pull it all the way! Do it just like this:


Now stick something like flat screwdriver where the arrow points - between the white PCB and the base module. With the screwdriver you will hold the base module while pulling off the LED PCB:

You might also use razor knife to cut the silicone glue on the left side, but sometimes it's not necessary.

Pull it off and the first hard part is done! (yellow circle is where I held my screwdriver - I hope it's understandable)


Now second hard part. Soldering!
Since we cannot pull the base out, we need to solder it as it is. Here is where your steady hand comes in.
There is CBLC5 module and UART pins are in the back, in that tight space:

But it's doable!



Now I just soldered GND because I was too lazy to find which of those 6 pins is GND:

Then I screwed it in my desk lamp (yes, I was also lazy to find VCC ), connected UART and flashed. Easy!
Don't connect anything to mains unless you know what you're doing! Or rather even if you know what you are doing.

This is what it looks like when you pull it all out, so you don't have to:

And this is where AC wires were - live under the bottom pin and neutral under that "thing" on the top:


Now reassembly. Quite easier process.
I used thin string, put it under / around the Tuya module and pulled it through the WiFi hole:

This was so I can pull the base module up with the string and push the LED module on those pins again. If you just try to push on it, the base module will "spring down", because it's just holding on wires and doesn't have any support.

Now just pull the string out and done!


I can finally remove the stupid abandoned Tuya integration from HA.

I hope somebody will find this useful!