# VOXL m500 unable to switch to position mode

Source: https://forum.modalai.com/topic/3071/voxl-m500-unable-to-switch-to-position-mode
Category: General Questions (https://forum.modalai.com/category/2/general-questions)
Posted: 2024-01-31 02:10:59 UTC by Darshit Desai
Replies: 4 · Views: 1234

## Darshit Desai · 2024-01-31 02:10:59 UTC

I am using voxl 1 m500 drone, my sdk version is 0.9.4 with px4 params of v1.13. Everytime I try to switch parameters it shows this error. The drone is supposed to fly indoors with vio

I have checked voxl-inspect-qvio and the drone position gets updated, voxl-vision-px4 is also working, I am not sure why this is happening

![e0136b28-da5a-4651-89bf-6fc275ad3d17-image.png](https://forum.modalai.com/assets/uploads/files/1706667008647-e0136b28-da5a-4651-89bf-6fc275ad3d17-image.png)

This is the detailed px4 log

[21:20:14.439] Critical: Switching to mode 'Position control' is currently not possible
Check for a valid position estimate
[21:26:42.534] Critical: Switching to mode 'Position control' is currently not possible
Check for a valid position estimate

## Reply by Darshit Desai · 2024-01-31 19:56:49 UTC

@Moderator

## Reply by tom (ModalAI staff) · 2024-01-31 20:59:51 UTC (in reply to Darshit Desai)

@Darshit-Desai You'll need to be on the latest SDK 1.1.2 with the included PX4 1.14 build before we can help.

That SDK version is over a year old at this point and countless improvements have been made

## Reply by Darshit Desai · 2024-01-31 21:16:28 UTC (in reply to tom)

@tom Yes since the 1.1.x update isn't working (https://forum.modalai.com/topic/3068/m500-voxl-flight-sdk-update-to-v1-1-x/3), I tried to restore this last night in a desperate effort to make the drone fly again, but this also didn't work it seems,

## Reply by Zachary Lowell 0 · 2024-02-11 15:56:23 UTC

@Darshit-Desai what do you have set for ekf2_aid_mask. The fact that you cannot go into position mode means something is barring you from moving into position mode, aka a specific parameter. If your QVIO quality is good, then a parameter in your PX4 isntance is off.