The information on this page supplements the official manuals.

Fractal Audio products firmware downloads

Firmware release notes

Axe-Fx II:
- Firmware update guide. Including troubleshooting tips.
- Tutorial.
- Always disconnect the MFC-101 when updating the firmware on the Axe-Fx II.
- If the Axe-Fx II sounds bad after an update, try reinstalling the firmware, or perform a system reset.
FX8:
- The firmware includes a firmware update guide.
AX8:
- The firmware includes a firmware update guide.

Fractal provides a dedicated utility for transferring updates to the Axe-Fx II, AX8, FX8 and MFC-101. See Fractal-Bot.

Built-in backup firmware in the Axe-Fx II XL, FX8 and AX8 allows recovery in the event of complications during update. Read the Firmware Update Guide (included with the firmware or available here) for more information, or contact Support.
More about Boot Recovery.

Updated firmware may cause changes in your presets. Read the firmware release notes and verify your presets.

The Axe-Fx firmware is coded in C and assembly. source
Cliff: "The Axe-Fx II can be reprogrammed at least 100,000 times." source
"Most DSP compilers include library functions for common signal processing functions. However every library I've seen makes the same mistakes in several important and oft-used functions. I can't disclose what functions and what those mistakes are but because of this we use our own hand-coded assembly functions for our own libraries. The results are measurable and audible especially when dealing with the special requirements of amp modeling. I should add that these libraries are low-level functions like FFT() and such. You're not going to find a library that implements a Tube Screamer or even something more granular like a diode clipping circuit. That all has to be developed in-house." source