This specific file is typically a bootloader utility. Its primary purpose is to facilitate the flashing (writing) of the main operating firmware onto the emulator's microcontroller (usually an STM32 or Atmel chip).
Because the HxC emulator often boots directly from an SD card, the process usually works as follows:
This guide assumes you have an STM32-based HxC Rev C or newer (the most common today). Always disconnect power before connecting cables.
If your HxC no longer responds to USB DFU, an ST-Link V2 is your rescue tool. Hxc-fw-installer.hex
Steps:
The .hex file extension stands for Intel HEX. This is a standard file format used to convey binary information (machine code) in ASCII text format.
A common mistake new users make is assuming that dragging Hxc-fw-installer.hex onto an SD card will update the device. It will not. This specific file is typically a bootloader utility
The .hex file is intended for direct communication with the HxC’s processor via a hardware programmer (like an ST-Link, USB Blaster, or Arduino-as-ISP) or the HxC’s own USB bootloader mode. The HxC cannot read a .hex file from an SD card because the SD card reader itself requires firmware to function—a classic chicken-and-egg problem.
To use Hxc-fw-installer.hex, you must bypass the SD card entirely.
First, let's demystify the name.
In essence, Hxc-fw-installer.hex is the bootloader and firmware flasher. It is not the final operational firmware itself; rather, it is the tool that erases the old firmware on your HxC device and writes the new operational firmware onto its microcontroller (typically an STM32 or LPC series chip).
You typically use this file when: