After system update Kernel Panic

[Stugist]

Installed on a 2017 MacBook Air A1466. Automatic updates hasn't ever really worked properly, most of the time it's failed but works when I press the "Refresh" button.
Same thing today, update ran fine after Refresh. Then a notification of another update after restart, ran update and now:

KERNEL PANIC! Please reboot your computer. VFS: Unable to mount root fs on unknown-block(0,0)

Tried to follow instructions for recovery from various Ubuntu forum posts, but all I have is the eOS install usb and terminal through the terminal doesn't have enough permission apparently to make changes to the installation system.
Grub boot menu also doesn't show, and again not enough permission to modify the grub configuration to show it.

Any help would be appreciated.

[Stugist]

I managed to use Super Grub2 to access the grub menu and boot to an older kernel.

[Stugist]

It was an outdated broadcom driver for the WiFi. For whatever reason during update DKMS failed to build the old driver into both the 6.14 and 6.17 kernel, dpkgs sh** the bed, and update decided that both kernels were broken. Forcing the driver to update fixed everything.

Fix process below:

• Flash Super Grub2 onto usb https://www.supergrubdisk.org/
• choose the "scan for bootable" option in SG2
• for me booting to 6.14 Recovery got me into the system
• open terminal and input:
  cd /tmp

wget https://archive.ubuntu.com/ubuntu/pool/restricted/b/broadcom-sta/broadcom-sta-dkms_6.30.223.271-23ubuntu1.2_all.deb

sudo apt install ./broadcom-sta-dkms_6.30.223.271-23ubuntu1.2_all.deb