Xbox October System Update Bricked my console

I will try off line update, when less angry, but not really hoping it'll work (I read what you wrote). I've even tried to have a "maintenance" (in french) sent here with my pc (my account perfectly works) but it didn't work neither. The microsoft "help",
haha...

I don't understand why a "simple" update problem can't be fixed up by another repair update, and why I have to send my xbox to repair. It's just Oo !!!

It is cheaper and it also includes several weeks of waiting time.

Thank you for trying to help.

Can't send it back for repair as I don't have the box anymore. (Ridiculous to keep a box of that size for a year.)

You don't need the original box for repairs. You can send it in any box that is reasonably sized for it.

If you need to set up a warranty repair see here:
https://support.microsoft.com/devices

The out of warranty repair is around ~$135-150 USD and that's definitely cheaper than a new console.

According to this page with your Error 101, since you can not do the USB update, you will need a repair:

https://support.xbox.com/en-US/xbox-one/console/startup-error-solution

But according to the help page for that error 0x80072F8F, that means that you are having trouble connecting to xbox live to get the update.

See this page:
https://support.xbox.com/en-US/xbox-one/errors/error-code-80072f8f

So I would troubleshoot your router/modem by unplugging them for 15 seconds and trying to update again.

And also, I would suggest trying wired if possible, and changing to IPv6 if you can, on your hardware. See here for more on IPv6:

https://support.xbox.com/en-US/xbox-one/networking/ipv6-on-xbox-one

Yes, that's the point where I was just now.

Tried using a flash drive but 1 second after the second power-up tone, there is a power-down tone (indicating failure) and the "something went wrong" window pops up. (Didn't even have a chance to remove the flash drive, like the tutorial suggests.) Tried
several times. After this, when I press continue, offline update does not work, error code is E101 00000504 8B050041. Also tried several times.

I'm going to go ahead and remove every game as well with the console resetting as there is little else I can do at this point.

Edit: now it just keeps popping the 0x80072F8F error code up when trying to update.

Could it be that the Xbox Support page did not upload the latest OS yet and I get this latest error because I'm trying to update to the OS I already have?