Pixhawk Bootloader issue

Hi Ardupilot family,

In Qgc, in the firmware page, I have this data with my pixhawk 2.4.8:

Found device: ArduPilot ChibiOS
Connected to bootloader:
Version: 5
Board ID: 9
Flash size: 1032192

From what I understand I have a pixhawk 1 and there must be a bootloader problem.

As seen in another page, I tried this solution:

[joy123]

Apr 2024

I got a solution here:

I was going through the discussions to update the bootloader to from 4 to 5. If you are using pixhawk with 2.4.8 which as 2 mb flash but cant upload v3 firmware due to bootloader version 4, here is what worked for me: Download any fmuv3 firmware with bootloader which must be less than 1mb if you are using fmuv2. I downloaded ardusub firmware with bootloader. Open mission planner and select custom firmware. select board type fmuv3 and flash this firmware. Reboot and connect by mavlink. Go to inst…

But in mission planner a have an error like this :

It seems to come from the .hex, I tried several but I have the same problem.
Does anyone have an idea?

Download the .apj file from here and use MP’ “load custom firmware” option to flash it
Pixhawk1-1M

Thank’s,
I’ve flashed with MP and this .apj, upgraded bootloader,
but I have the same issue :

Found device: ArduPilot ChibiOS
Connected to bootloader:
Version: 5
Board ID: 9
Flash size: 1032192

Who knows with some of those 2.4.8’s There is no standard.
Try Pixhawk1 or fmuv3