using --update flag displays - 'Please refresh auto-cpufreq using your AUR helper.' even though i don't haven't installed auto-cpufreq from aur.

[KAGEYAM4]

[phoenix@ArchLinux ~]$ sudo auto-cpufreq --update
[sudo] password for phoenix: 
Arch-based distribution with AUR support detected. Please refresh auto-cpufreq using your AUR helper.
[phoenix@ArchLinux ~]$ yay auto-cpufreq
3 aur/auto-cpufreq-no-gnome-power 1.8.0-2 (+0 0.00) (Orphaned) 
    TEMP Automatic CPU speed & power optimizer with non-systemd-gnome-power. original source code from crian. this will be deleted when 1.8.1 out
2 aur/auto-cpufreq-git 1.9.6.r3.gff72e1e-2 (+18 0.18) 
    Automatic CPU speed & power optimizer
1 aur/auto-cpufreq 1.9.9-2 (+58 0.85) 
    Automatic CPU speed & power optimizer
==> Packages to install (eg: 1 2 3, 1-3 or ^4)
==> 

On the readme, it was mentioned that aur-package has some problem, so i used https://github.com/AdnanHodzic/auto-cpufreq#auto-cpufreq-installer to install.

Now i am using --update flag but it is giving warning.

[rootCircle]

It was an known issue which has been fixed in #550. For now, you can clone and update auto-cpufreq using sudo ./auto-cpufreq-installer. Rest assured, if future updates arrives, they won't be hindered by that.