Folowing manual for flashli results in error using ubuntu livecd 22.04

[stijndhondt]

flashrom v1.2-1023-g81d507c on Linux 6.2.0-26-generic (x86_64)
flashrom is free software, get the source code at https://flashrom.org

Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns).
Cannot open file stream for /dev/mtd0
ERROR: Could not get I/O privileges (Operation not permitted).
Make sure you are root. If you are root, your kernel may still
prevent access based on security policies.
On OpenBSD set securelevel=-1 in /etc/rc.securelevel and
reboot, or reboot into single user mode.
On NetBSD reboot into single user mode or make sure
that your kernel configuration has the option INSECURE enabled.
Error: Programmer initialization failed.
BIOS Flash failed, is this script running with root permissions?
Please try again, but if problems persist, please contact Protectli.
TODO: Collect info and display instructions on how to submit a Github issue.

[SergeyKonst3]

Can you please let us know what unit you are trying to flash?