# Flash Flat Build Fails in QDL recovery steps

Source: https://forum.modalai.com/topic/3870/flash-flat-build-fails-in-qdl-recovery-steps
Category: General Questions (https://forum.modalai.com/category/2/general-questions)
Posted: 2024-10-16 20:00:27 UTC by swickliff
Replies: 2 · Views: 1116

## swickliff · 2024-10-16 20:00:27 UTC

I'm trying to unbrick a VOXL 2 that has gone into EDL mode (Reading as QUAL_BULK). I've got the system into QDL mode and it is being read as (QDL MODE). No issues provisioning or flashing CDT. 

Once I get to the Flash Flat Build stage, the system immediately sends the following failure {"message": "Flash flat build failed\n"}. I've tried on a Virtual Machine and on a dedicated Linux PC. Any thoughts as to why it may be failing?

Flash Flat Build: 2024-06-17-1.7.4-M0054-1

VOXL2: QRB 5165M

## Reply by swickliff · 2024-10-16 21:44:03 UTC

@swickliff  I am using Ubuntu 20.04 on both the VM and Linux PC

## Reply by Moderator (ModalAI staff) · 2025-03-20 20:47:00 UTC

@yardy Folks recover using that tool all of the time. When it doesn't work, it's due to hardware damage. Often from ESD, or simply crashing the drone. See https://modalai.com/handling