No possible way to install Ubuntu on Asus Zenbook UX433FN

I just solved this problem on my Zenbook UX533FD with Ubuntu 18.04.

It turns out update/upgrade will update the Intel related stuff and then crush the system

This is what I did:

In grub, choose Ubuntu, DON'T PRESS ENTER, press 'e', add dis_ucode_ldr after the line start with Linux, then boot (press F10), should be bootable now.

Once booted, in terminal:

sudo apt install intel-microcode=3.20180312.0~ubuntu18.04.1

Then hold the package:

sudo apt-mark hold intel-microcode=3.20180312.0~ubuntu18.04.1

I have written a readme about the problems I have with this laptop. Hope it helps.

Shangchun's answer worked for my UX362F. To make the boot change permanent I edited /etc/grub/default

GRUB_CMDLINE_LINUX_DEFAULT="dis_ucode_ldr"

and then ran

sudo update-grub

I did not have to do the apt steps. Not sure if this means I'm missing something important or if this issue is only related to the boot process. Seems to work.