Hi
Update/restart after update breaked my grub. Now it boot into grub terminal/prompt (black screan with “grub>”:
I tried boot manualy
set root=(hd2,1)
linux /boot/vmlinuz… root=/dev/sdc1
initrd /boot/initramfs-5.9…
boot
but it display: error:
no suitable video mode found.
Boting in blind mode.
and screen freezes, after restart, command videoinfo return empty list
Boot partition is F2FS on nvme SSD and i use UEFI.
Hello @akuhtr 
Maybe this could help:
# Inspect the current prefix (and other preset variables):
set
# Find out which devices are available:
ls
# Set to the correct value, which might be something like this:
set prefix=(hd0,1)/boot/grub
set root=(hd0,1)
insmod normal
normal
https://www.gnu.org/software/grub/manual/grub/grub.html#GRUB-only-offers-a-rescue-shell
Thanks, but without success. 
I try create live Flashdisk and repair grub from it.