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Reflashing Glow Ray 4in LED Gimbal Lights with Firmware 1.5.21 via Serial Connection

yonubear 351 16
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  • #1 21328683
    yonubear
    Level 2  
    I am trying to reflash several Glow Ray 4in recessed LED gimbal lights that have firmware 1.5.21. I know that these can't be flashed using CloudCutter, but I am lost on the serial connections as I can't find CEN on the chip. Here is a photo of the board if that helps, but I am hoping someone has a better suggestion.

    Close-up of an LED light circuit board with visible electronic components.
    AI: Could you provide the specific model number of your Glow Ray 4in LED gimbal lights?
    LED-4g-SMD-10w-SWF-RD-WF
    AI: What type of serial connection or equipment are you using to attempt the reflash?
    USB to serial adapter 3.3V
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  • #2 21328729
    divadiow
    Level 34  
    I don't think I've seen a bulb where everything is on the LED disc before. Is that a T34? I think I just about see a "T34".

    Close-up of a circular circuit board with electronic components and an LED.

    CEN is circled but you can achieve the same by toggling the 3v3 power off/on until Easy Flasher catches it in uart download mode.
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  • #3 21328736
    yonubear
    Level 2  
    Thank you I will try that and it is a recessed can light assembly mounting can and bulb are one piece Packaging of smart recessed lights with Wi-Fi and Bluetooth features.
  • #4 21328740
    divadiow
    Level 34  
    please post the factory firmware backup for analysis if you're happy to :)
  • #5 21328744
    yonubear
    Level 2  
    Will do if i get it to connect
  • #6 21330973
    yonubear
    Level 2  
    I'm still at it can't get it to connect to PC will post file as soon as I get it to connect
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  • #7 21330978
    divadiow
    Level 34  
    what does your wiring look like? what is your power source?
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  • #8 21330990
    yonubear
    Level 2  
    I have tried the 3.3V on the USB serial. I have tried a second 3.3V adapter and having the board powered by the mains supply.
  • #9 21330993
    divadiow
    Level 34  
    yonubear wrote:
    having the board powered by the mains supply

    eek! don't do that! no need with external 3.3v power source.

    do you have any pics of your setup as configured when using 3.3v from PSU?

    please confirm it says T34 on that chip.
  • #10 21331017
    yonubear
    Level 2  
    wiring i was using pogo pins i am currently redesigning a 3d printed jig to see if I can get a better fit

    Added after 35 [minutes]:

    >>21330993 >>21330993 >>21330993

    let me see if i have a pic as I have everything apart remeasuring and let me see if I can read the chip

    Added after 5 [minutes]:

    >>21330993

    Close-up of a circuit board with electronic components and a chip labeled 134 2122-K8WYN K00LEB.
  • #11 21331088
    divadiow
    Level 34  
    OK that makes sense. just wanted to be sure :)
  • #12 21331093
    yonubear
    Level 2  
    >>21331088
    is there anything I have to do special that I might be overlooking?
  • #13 21331101
    divadiow
    Level 34  
    unsure.

    confirm the following I guess:

    3.3v from external PSU
    GND to PSU and shared to USB-TTL adaptor GND
    bulb TX to USB-TTL RX
    bulb RX to USB-TTL TX
    continuity OK to the end of your pogo pins from furthest point
    shortest cables possible with the pogo pins or, preferably, solder short cables to 3.3V, GND, RX, TX
  • #14 21331164
    yonubear
    Level 2  
    >>21331101

    yeap that is what I have I think this thing just doesn't like me lol
  • #15 21331184
    divadiow
    Level 34  
    Does the device still work? With 3.3v and gnd connected does it show as available for pairing or broadcast an AP or anything?
  • #16 21331936
    yonubear
    Level 2  
    if I put power to it it happily reconnects to the wifi and tuya
  • #17 21331973
    divadiow
    Level 34  
    Ok. Have you tried soldering instead? Ie no pogos.
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Topic summary

The discussion revolves around reflashing Glow Ray 4in recessed LED gimbal lights with firmware version 1.5.21. The user is facing challenges with serial connections, particularly in locating the CEN pin on the chip. Suggestions include toggling the 3.3V power to enter UART download mode and ensuring proper wiring connections between the bulb and USB to serial adapter. The user has attempted various setups, including using pogo pins and external power sources, but has not yet succeeded in establishing a connection. Other participants emphasize the importance of correct wiring and suggest soldering connections instead of using pogo pins for better reliability.
Summary generated by the language model.
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