Manually Update Grub on Linux: Solved
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DOWNLOAD GRUB
Visit https://ftp.gnu.org/gnu/grub/ to See Available Versions. (Alternative: See Attachments)
wget https://ftp.gnu.org/gnu/grub/grub-2.02.tar.gz
INSTALL GRUB
tar -xzvf grub-2.02.tar.gz
cd grub
./configure
make && make instal
SETUP GRUB (BIOS)
Uninstall Previous Version (Using Yum or Apt-Get)
/usr/local/sbin/grub-mkconfig -o /boot/grub/grub.cfg
/usr/local/sbin/grub-install /dev/sda
mv -v /boot/grub/grub.conf /boot/
EDIT GRUB
nano /etc/default/grub
/usr/local/sbin/grub-mkconfig -o /boot/grub/grub.cfg