update installation instructions to use GH artifact

README.md

@@ -6,15 +6,14 @@
 
 
 > [!WARNING] 
-> The following instructions grab the system extension from an external Cloudflare bucket. In the future, this repository
-> will create and push signed images. In the meantime, only install arbitrary extensions if you trust the author.
+> Installing a sysext with SELinux enabled can lead to an unstable system. Before installing this extension, please first verify that SELinux is set to permissive in `/etc/selinux/config`. If it is set to "enforcing," change it to "permissive" and reboot before continuing.
 
 These instructions will create a temporary installation using a [sysext](https://www.freedesktop.org/software/systemd/man/latest/systemd-sysext.html) placed in `/run/extensions`.
 These changes are ephemeral and will not persist across reboots.
 
 Download and install the `kcm_ublue` system extension:
 ```bash
-wget https://pub-969fbc86b5f24e4d81c6d022e8fd8dde.r2.dev/kcm_ublue.raw 
+wget https://github.com/ledif/kcm_ublue/releases/download/aurora-41-x86-64/kcm_ublue.raw
 sudo install -d -m 0755 -o 0 -g 0 /run/extensions/
 sudo restorecon -RFv /run/extensions/
 sudo install -m 644 -o 0 -g 0 kcm_ublue.raw /run/extensions/kcm_ublue.raw