i’m running a 9070XT and have non-booting problems with 20250613.12fe085f-6.
I fixed it with new firmware AMD has released, 20250613.12fe085f-7, under core-testing which fixes nonbooting 9000 cards.
I booted into my live usb, mounted my OS and arch-chroot’d it
lsblk #to get your device and drive layout
sudo mount /nvme0nXpX /mnt # the X numbers will change with your specific partition setup
sudo mount /nvme0nXpX /efi
sudo arch-chroot /mnt
then pulled the packages with pacman. You can get this by uncommenting the core testing lines in
/etc/pacman.conf
[core-testing]
Include = /etc/pacman.d/mirrorlist
[core]
Include = /etc/pacman.d/mirrorlist
and then getting them with
pacman -Syu linux-firmware-amdgpu
hope this helps another amd user who saw the two breaking changes today that required manual intervention and thought they were safe :3