# Issue with Bootloader

Source: https://forum.modalai.com/topic/2486/issue-with-bootloader
Category: Flight Core and Legacy VOXL (https://forum.modalai.com/category/9/flight-core-and-legacy-voxl)
Tags: flight-core
Posted: 2023-07-25 19:22:58 UTC by Jerry Fuller
Replies: 1 · Views: 1068

## Jerry Fuller · 2023-07-25 19:22:58 UTC

Hi I have a Flight Core that I am trying to update the firmware on (changing to Ardupilot) I have no issues through the USB port normally but when in bootloader mode it's as if the USB communication is just cut off. The green light is flashing as it should to indicate bootloader mode but when it does change to bootloader mode the USB connection just drops and I can't find anything in Device Manager. Are there any known issues or something obvious I'm missing?

## Reply by Zachary Lowell 0 · 2023-07-26 14:21:02 UTC

Hi @Jerry-Fuller - you need to update the most recent iteration of QGC where the changes have been made to actually upload/get the system out of bootloader mode. I would recommend downloading the most recent daily build of QGC and seeing if that helps flash the device.