Prevents the clone from becoming permanently damaged ("bricked") during diagnostics. Features and Benefits of Patched 1.99
Open the case. Ensure it reads "PIC18F458".
An application like OP-COM Firmware Flasher is loaded. The user selects the local patched OP-COM_Firmware_1.99.hex file, selects the corresponding COM port, and initiates the erase-and-write sequence. Summary and Recommendations opcom firmware 199 hex file patched
Unscrew the plastic shell of your OP-COM interface.
Use a utility like OCFlash. You load the patched 1.99 .hex file, select your device, and hit "Update." An application like OP-COM Firmware Flasher is loaded
The official, genuine developer of OP-COM never created a Firmware version 1.99.
A: No. The HEX file is compiled for PIC18F microcontrollers. CH340-based clones cannot be reflashed; they are USB-to-serial junk. Use a utility like OCFlash
However, the stock firmware has built-in limitations—many of them artificial. It checks for a "genuine" interface, refuses to work with some clone hardware, and locks certain functions behind paywalls.
The code is modified to bypass the security checks that would otherwise disable the chip when used with newer software versions.
Open your device. You must have the Microchip PIC18F458 . If your board uses a "fake" chip (often marked with "OP-COM" or having no markings at all), attempting to flash a 1.99 HEX file will likely destroy the interface.
Open the firmware update utility (like OP-COMFUT).