# Cannot connect with controller after software update

Source: https://forum.modalai.com/topic/4312/cannot-connect-with-controller-after-software-update
Category: Development Drones (https://forum.modalai.com/category/44/development-drones)
Tags: starling
Posted: 2025-04-03 09:16:00 UTC by kestrelsystemsbp
Replies: 6 · Views: 934

## kestrelsystemsbp · 2025-04-03 09:16:00 UTC

Recently upgraded from 1.3.5 to 1.4.1 on our Starling 2 Max drones, but now it seems that they cannot connect with their controllers. Are there any updates or configurations that need to be done with the controllers as well?

## Reply by tom (ModalAI staff) · 2025-04-03 17:01:34 UTC

@kestrelsystemsbp Which transmitter / receiver combo are you using? It's possible the firmware was updated and it requires them to be re-bound

## Reply by kestrelsystemsbp · 2025-04-04 14:20:20 UTC (in reply to tom)

@tom The controller uses LoRa/FLRC

## Reply by tom (ModalAI staff) · 2025-04-04 16:52:32 UTC (in reply to kestrelsystemsbp)

@kestrelsystemsbp Interesting, can you send the info of what receiver and transmitter you're using?

## Reply by kestrelsystemsbp · 2025-04-04 18:37:07 UTC (in reply to tom)

@tom I am not entirely sure how I check that

## Reply by tom (ModalAI staff) · 2025-04-04 18:59:50 UTC (in reply to kestrelsystemsbp)

@kestrelsystemsbp Well you say you're using LORA which is not something starling ships with so I'm wondering if you put custom hardware on there

## Reply by kestrelsystemsbp · 2025-04-04 19:25:03 UTC (in reply to tom)

@tom It's okay, I managed to figure it out. Just had to change the RC protocol in the px4-conf file.