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***hydrofrein*** · 19-05-2024, 22:47 PM,

Hi everyone I am looking for firmware 1.99 for opcom. I bought it with firmware 1.67 but after that it was impossible to use it. Unfortunately I didn't keep firmware 1.99.

***mattydr67*** · (This post was last modified: 20-05-2024, 02:47 AM by mattydr67.)

There's no fw1.99
You have a fake PIC there and it is blocked forever now. It cannot be flashed ever.
You have two choices:
1. Buy an original PIC18F458 and replace that one and do the hardware changes that is need ( you find a tutorial in the forum )
2. Buy a brand new OP-COM with original PIC18F458.
If you do not buy from a trustable source you will play as to the lottery. You will need luck to find a good OP-COM in China.

Good luck

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