I am holding in my hands a cool ASUS UX481F (ZenBook Duo) that works surprisingly well out-of-the-box (including network and disk) with Ubuntu 19.10 live USB, but the Ubuntu 18.04 both liveUSB and MinimalDisk is too old to recognize the disks.

Do I have any options to install Ubuntu 18.04 on it anyway? 

I can see two theoretical solutions:

1. Include a newer kernel (e.g. using HWE or UKUU) in the installer (if that is possible). If I had an option, I would prefer to use the Ubuntu 18.04 MinimalCD image rather than standard liveCD.
2. Downgrade Ubuntu 19.10 back to 19.04 - I've seen the instructions on the blog: <https://linuxconfig.org/how-to-downgrade-ubuntu-linux-system-to-its-previous-version> .

The questions:

1. **Which option is preferable?**
2. **How do I upgrade the kernel in the (minimal) liveCD image**
3. **Did anyone succeeded in downgrading vanilla Ubuntu 19.10 to 18.04?**