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Cloudcutter Profile Request for LSC Smart GLS A60 (BK7321N, CBLC5, v1.6.0)

tom2409 570 6
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  • #1 21755423
    tom2409
    Level 2  
    Hello,

    I bought 3 LSC light bulbs from Action in October 2025.

    https://www.action.com/fr-be/p/3208075/ampoules-led-connectees-lsc-smart-connect/

    White LSC Smart GLS A60 LED bulb on wooden surface with visible printed product details. Box of 3 LSC Smart LED RGB bulbs with WiFi 2.4GHz and tunable white Disassembled LED bulb with visible PCB and casing parts on a wooden table
    LED board with BK7321N chip and CBLC5 module, surrounded by multicolor LEDs. LSC LED bulb PCB with soldered wires and visible capacitors shown on a wooden surface. Close-up of a PCB with CBLC5 module and capacitors inside an LED smart bulb
    CBLC5 electronic module with chip placed on a wooden surface Small PCB with electronic components on a wooden surface Electronic module with soldered wires placed on a wooden surface



    CBLC5 electronic module with attached wires on a wooden surface App screen showing LSC Smart GLS A60 bulb being added Device update screen confirming firmware is up to date

    CBLC5 module with pin layout and function labels on front and back views


    Name: LSC Smart GLS A60
    Chip: BK7321N
    Module: CBLC5
    MCU version: v1.6.0

    I soldered RX1, TX1, 3.3 V and GND to flash at 115200 baud with BK7231 Easy UART Flasher. I disassembled 1 bulb; I have 2 left, and I would still like to buy some. I tried several Cloudcutter profiles, but none of them worked.

    Is it possible to generate a Cloudcutter profile for this device?

    readResult...-53-20.bin Download(2 MB)

    3208075_Da...60_e27.pdf Download(1 MB)













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  • #3 21755917
    tom2409
    Level 2  
    >>21755464 Thank you for your reply, but how do you obtain the firmware information?
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  • #4 21756310
    divadiow
    Level 38  
    I flashed your backup to a BK7231N module then captured the boot log.
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  • #5 21845178
    defaliz
    Level 5  
    >>21756310 Hello, how did you disassemble the bulb to access Wi-Fi chip?
    Regards
  • #6 21846489
    tom2409
    Level 2  
    >>21845178
    Hi,
    Like that:


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Topic summary

The discussion concerns the LSC Smart GLS A60 LED light bulbs (model BK7321N, CBLC5 module, firmware version 1.6.0) purchased from Action in October 2025. The device runs on a BK7231N chipset with TuyaOS version 3.3.44 and firmware built on 2024-12-12. The firmware is patched against the Tuya CloudCutter exploit, preventing unauthorized firmware modification. Technical details extracted include the use of SM2235DAT and SM2235CLK components on specific pins (P24 and P26), an LED remapping configuration (unknown, unknown, 2, 4, 3), RGB current set at 2 mA, and white LED current at 4 mA. The device uses the CBLC5 module based on the BK7231N chip, with the Tuya section starting at firmware address 2023424. The firmware version is BK7231N_1.0.1. The discussion provides low-level firmware and hardware configuration insights relevant for advanced users interested in device hacking or customization.
Summary generated by the language model.
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