# .px4 file

Source: https://forum.modalai.com/topic/967/px4-file
Category: Flight Core and Legacy VOXL (https://forum.modalai.com/category/9/flight-core-and-legacy-voxl)
Tags: voxl
Posted: 2022-05-28 20:07:04 UTC by wilkinsaf
Replies: 2 · Views: 876

## wilkinsaf · 2022-05-28 20:07:04 UTC

Hello, I used to be able to download ModalAI's custom px4 firmware file in the "Downloads" section of the developers page (https://developer.modalai.com/), but now I can not seem to find it

Does not seem to be in these categories
![9eaef459-cd8b-4643-b0a0-46e7059ec717-image.png](https://forum.modalai.com/assets/uploads/files/1653768423243-9eaef459-cd8b-4643-b0a0-46e7059ec717-image.png)

## Reply by modaltb (ModalAI staff) · 2022-05-28 21:50:03 UTC

This one is a little different in that they don't need a EULA so we throw 'em in the public docs:

https://docs.modalai.com/flight-core-firmware/

## Reply by modaltb (ModalAI staff) · 2022-05-28 21:52:46 UTC

This is for the STM32 based FlightCore.... not SLPI ;)  which I think you're super aware of but making sure!