The Resources Index has a lot of valuable information like this.
Translated the output of your sudo update-grub2, this part looks good:
Creating GRUB configuration file…
Found theme: /boot/grub2/themes/OpenMandriva/theme.txt
Found background: /boot/grub2/themes/OpenMandriva/background.png
Found Linux image: /boot/vmlinuz-6.10.0-desktop-1omv2490
Found initial memory image: /boot/initrd-6.10.0-desktop-1omv2490.img
Found memtest image: /boot/memtest.bin
Warning: the OS probe will be run to detect other bootable partitions.
Its output will be used to detect the bootable binaries they contain and create new boot entries.
This part I have not seen before:
ERROR: sil: invalid metadata checksum in area 2 on /dev/dm-0
Adding boot menu entry for UEFI firmware configuration …
Adding boot menu entry for EFI firmware configuration
done
Edit: On my ROME P6 hw system I do not have a /dev/dm-0. Also adding boot menu entry for UEFI and EFI looks sketchy. But I am not a developer, user knowledge lever here.
So if you have problems with booting there is this article. I had to use this myself about 6 days ago due to a mistake I made.