How to set Ubuntu startup order to first on Windows 10?

Question

linux

Windows 10 and Ubuntu 18 are installed on the same hard drive. When I start the computer, I choose which OS to run Ubuntu or Windows.
The following happened, the keyboard from the laptop broke, and I could only start in Ubuntu, because at startup it is in the first place and the first OS is automatically selected by the timer.
Through GRUB Customizer, I changed the startup order so that Windows was first in the list. Now I only boot on Windows.
Question: how can I change the OS startup order from under WIndows, as I did in GRUB Costamizer? How do I understand this is impossible? And you can't do without a keyboard?

Answer 1

Hello.
There is a "Grub Customizer" utility. There are alternatives to it. In that order, I thought.
https://ruprogi.ru/software/grub-customizer
Suitable option?

Answer 2

The boot is controlled by GRUB, and it must be configured. No keyboard whatsoever.