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[Solved] LEDVANCE E14 5W Smart Bulb Firmware Dump with BK7231GUIFlashTool v16

apsis 393 6
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    #1 21479529
    apsis
    Level 6  
    LED КР E14 5W 27-65K 470LM SMART, WIFI LEDVANCE LEDVANCE Firmware dump.

    Here are images of the Light - it uses BK9231T controller, powered by BP2525 and controlling BP5778.

    Similar lights disassembly here:
    https://imgur.com/gallery/lsc-gu10-cw-ww-bp57...ya-white-ambiance-budget-store-action-cCG39uV

    Close-up of a circuit board with electronic components.
    Circuit board with various electronic components, including capacitors and an integrated circuit.
    Disassembled LED bulb with visible electronic components.

    Dump done with BK7231GUIFlashTool v16 ( https://github.com/openshwprojects/BK7231GUIFlashTool/releases )
    Attachments:
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  • #2 21479766
    p.kaczmarek2
    Moderator Smart Home  
    Thanks for sharing, but did something happen to one of the LEDs? It's not looking good.

    How much such one piece costs?
    Helpful post? Buy me a coffee.
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  • #3 21479788
    apsis
    Level 6  
    >>21479766 Yes I did break two LEDs while opening the bulb - was trying to preserve the housing.

    The bulb was bought locally for about 12 Euro from Praktiker.

    I do not mind it breaking as I was after the MCU PSU combo and can use the LED driver too.

    I bought E14 so the board is small, I do not actually need the bulb as a whole - it was "for parts" purchase.

    I am also able to replace the LEDs if I ever need to - have heated plate hot air station.
  • #4 21479812
    p.kaczmarek2
    Moderator Smart Home  
    I see, it happens sometimes. Don't insert screwdriver too far and you'll be on the safe side. For the bulbs, I prefer eWeLink ones, they have WiFi module on the LEDs board, so you don't have to do full teardown. See BW2L bulbs topic: https://www.elektroda.com/rtvforum/topic4111244.html

    What kind of heat plate do you use? I've been looking for some good recently.

    For hot air, I use Sugon 8630 PRO, but so far I tested:
    https://openshwprojects.github.io/hotair/450c.html
    Helpful post? Buy me a coffee.
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  • #5 21479858
    apsis
    Level 6  
    >>21479812 I will share some info once the project I bought this for is done.

    I generally dislike any type of bulb /due to heat dissipation constraints and opt for big ceiling lights /in fact I had to buy a socket to power the lights as I have none/, so if I have to, I buy as high power lights as I can find, then tune them down via resistor mod of the current sense circuit - for example I replace resistors of 15W bulbs to run at 9-10W.

    For the heat plate - it's some cheap 270-degree Chinese shit I bought years back, but I rarely use it as my Proskit SS989B usually manages it with the hot air from back then just touch the solder joints with the iron and remove with ceramic tweezers.
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  • #7 21500113
    apsis
    Level 6  
    I have connected the board after removing the Gretz, fuse resistor, and input capacitor to control and get powered by another driver and control it.
    Basically, I turned the IR fixture into a Wi-Fi one.
    Some component removal for powering the IR controller and the controller itself is involved.
    Attachments:
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Topic summary

The discussion revolves around the disassembly and firmware dumping of the LEDVANCE E14 5W smart bulb, which utilizes a BK9231T controller powered by a BP2525 and controlling a BP5778 LED driver. The original poster experienced damage to two LEDs during the disassembly process but intended to salvage the MCU and driver components. The bulb was purchased for approximately 12 Euros from Praktiker. Other participants shared insights on alternative bulbs, such as eWeLink models, which feature integrated WiFi modules, and discussed their experiences with hot air soldering tools. One user mentioned modifying an IR fixture to operate as a Wi-Fi device by removing certain components.
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