Opcom Firmware 199 Hex File Patched Jun 2026

Erase the chip, then program the new HEX. Verify the checksum afterward.

The story takes a turn with the hardware inside these devices. Original/High-Quality Clones : These use the opcom firmware 199 hex file patched

For anyone else, invest in a modern multiplexer. Erase the chip, then program the new HEX

Connect your OP-COM to your PC via USB (do not connect to the car yet). Erase the chip

Technically, there is no "official" version 1.99 released by the original developers (Auto-M3). In the enthusiast community, Firmware 1.99 is a Chinese-developed revision designed to bridge the gap between older hardware (Version 5 boards) and newer software versions (like VAUX-COM 120309a or the 2014/2016 databases).