OPCOM real v5 good bootloader but can't flash

[leister]

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?
801091

801092

801093

801094


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

[desapna11]

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

[leister]

1. I flashed the bootloader with ocflash:
https://i.imgur.com/5qLj9D6.png

2. can not flash fw:
https://i.imgur.com/aqrLJ5f.png

3. when I check bootloader (fw version) with OPCOMFUT it looks like bootloader is fine:
https://i.imgur.com/jcRFddI.png

4. opcomfut also can't flash fw:
https://i.imgur.com/1ho0Vec.png

5. this is result from opcomfut ftdi eeproom read:
https://i.imgur.com/Kfzyct3.png


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,

[chris249]

Hey i have the same problem with my Opcom have u found a solution?
I bought this Opcom: https://www.aliexpress.com/item/32789484759.html?spm=a2g0s.9042311.0.0.5dda4c4d5Vr JtO

Thx. :)

[Rider667]

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

[FarGone]

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

[Stelaras26]

1.99 devices cannot be flashed.you have to buy a new pic18f458 or a new opcom ;)

[yalcin]

Eski sürüm 170 china clone idi. OC flash ile 1.60'a flaşladım. Araca bağladım ve şimdi çalışmıyor. Eski sürümü yeniden yükleyemiyorum.



https://www.digital-kaos.co.uk/forums/image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAQAAAA ngNWGAAAA/0lEQVR4AYXNMSiEcRyA4cfmGHQbCZIipkuxnJgMStlMNmeyD2d wmc8 sZgxYJd9ErIZFHUyYYD7fkr6l4/rnvmtl7 KitrqV/fq2Y5eLY3Z9S48eRLe7BmVZ9qhTLhQ0algzZWQOVKSsCF8OjAn wbxDTWFDUhPK/jMr1H6HE/IqRky2DyvCefuwItwZzodVoYRiLqMkVCXrwpJ9twZ sgfDYEFYl8wIWxZ9uFf7zkallxlJh4YrLGsKjZRx7VGHhLqwgF UN45DGdb8MeXGpgB4ABZdeDcpZEY51A hyLKz4S1W4MQWm3AibWtgWmk6dyISa1pSdyWTOlLXVp0 eL9D/ZPfBTNanAAAAAElFTkSuQmCC

[yalcin]

The old version was 170 china clone. I flashed it to 1.60 with OC flash. I connected it to the vehicle and now it doesn't work. I cannot reinstall the old version.

[Mario6]

The old version was 170 china clone. I flashed it to 1.60 with OC flash. I connected it to the vehicle and now it doesn't work. I cannot reinstall the old version.

The solution is simple. Buy another Opcom with a real PIC 18F458. By doing the update you simply killed your interface with a fake PIC.


Currently Chinese Opcoms with a real PIC 18F458 most often have FW 1.95.


But it is still a "Chinese lottery"

It is best to buy one that has in the description that it supports SW Opcom 200603a.

You also have to read the opinions of buyers.


Good luck.