OPCOM real v5 good bootloader but can't flash
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  1. #1
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    Default OPCOM real v5 good bootloader but can't flash

    Hi all,

    Quick question,
    I have bought OPCOM v5 real clone, before buying check everything possible to avoid getting fake clone (C5, D22, fake PIC, opcom v5 2013, one sided pcb, etc),

    I had some issues with ftdi drivers, ocflash showed wrong checksum but I tried to update software from 1.59 to 1.45,

    Now I have a communication with ftdi (can read it and flash etc),
    Also I can flash a bootloader now without any issues,
    The problem is that I can't flash firmware, do I really need external programmer even that I can flash the bootloader without any issues?

    Did anyone saw this pcb with fake PIC?
    1.jpg

    2.jpg

    3.jpg

    4.jpg


    photos in hi-res:
    https://i.imgur.com/Mqh0jQA.png
    https://i.imgur.com/V6T9X9B.png
    https://i.imgur.com/zyFcL8M.png
    https://i.imgur.com/AQUWupQ.png

  2. #2
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    Default

    How did you flash the bootloader? If it was or is gone than you need an external Programmer. Like the "PicKit3".

    Thats the main purpose of an bootloader, it gets programmed once (mostly in factory) and than it can manage firmware update by usb. If bootloader is gone, nothing is there to put the firmware in.

    I cant spot the programmer-ports on you pcb. On my pcb the portpins are net the usb port... 5 or 6 pins in a row. for ICSP programming

  3. #3
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    1. I flashed the bootloader with ocflash:


    2. can not flash fw:


    3. when I check bootloader (fw version) with OPCOMFUT it looks like bootloader is fine:


    4. opcomfut also can't flash fw:


    5. this is result from opcomfut ftdi eeproom read:



    I would go with an external programmer but I dont understand why I am able to load the bootloader via USB but can't flash the firmware,

  4. #4
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    Hey i have the same problem with my Opcom have u found a solution?
    I bought this Opcom: https://www.aliexpress.com/item/3278...5dda4c4d5VrJtO

    Thx.

  5. #5
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    maybe this will help but you need a programer tl866 or similar...only works on original pic....i tried on fake pic and didnt work for me
    Attached Files Attached Files
    Last edited by Rider667; 3rd October, 2021 at 04:44 PM.

  6. The Following 2 Users Say Thank You to Rider667 For This Useful Post:

    maxxy (3rd December, 2021), vm44 (23rd January, 2022)

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    I flashed mine to 1.59 , all seemed good until i plugged it into vehicle , No com Cant flash it back to 1.99 .Software picks up device and says good to go but its not working .

  8. #7
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    1.99 devices cannot be flashed.you have to buy a new pic18f458 or a new opcom
    "If at first you don't succeed, skydiving is not for you."


    Use thanks and Rep button if someone helps you!

  9. The Following User Says Thank You to Stelaras26 For This Useful Post:

    Mario6 (11th January, 2022)

 

 

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