Awesome and confirmed. I made something easier to use. Props to @Max_Power for doing the leg work on the needing to vanish old firmware files - tested it both ways, they do need to go. So the one liner is paste and go, reboot, done.
Copy, paste, enter key a few times, reboot, profit. This enables Jammy proposed, installs linux-firmware/jammy-proposed, disables Jammy proposed. Then it deletes the old firmware, updates initramfs. No GUI needed.
Just reboot after.
sudo add-apt-repository "deb http://archive.ubuntu.com/ubuntu/ jammy-proposed main restricted universe multiverse" && sudo apt update && sudo apt install linux-firmware/jammy-proposed && sudo sed -i 's/^deb http:\/\/archive.ubuntu.com\/ubuntu\/ jammy-proposed/# &/' /etc/apt/sources.list && sudo apt update && sudo rm /lib/firmware/mediatek/WIFI_MT7922_patch_mcu_1_1_hdr.bin && sudo rm /lib/firmware/mediatek/WIFI_RAM_CODE_MT7922_1.bin && cd /tmp && wget https://gitlab.com/kernel-firmware/linux-firmware/-/raw/0a18a7292a66532633d9586521f0b954c68a9fbc/mediatek/WIFI_MT7922_patch_mcu_1_1_hdr.bin && wget https://gitlab.com/kernel-firmware/linux-firmware/-/raw/0a18a7292a66532633d9586521f0b954c68a9fbc/mediatek/WIFI_RAM_CODE_MT7922_1.bin && sudo mv WIFI_MT7922_patch_mcu_1_1_hdr.bin /lib/firmware/mediatek/ && sudo mv WIFI_RAM_CODE_MT7922_1.bin /lib/firmware/mediatek/ && sudo update-initramfs -u
Check with:
sudo dmesg | grep mt7921e
Build time in dmesg confirms this worked. 20230627143702a and 202330627143946
Also tried it without deleting old firmware, no go - must follow all the steps and reboot, works.
Script tested on two FW 13 AMD units, success both times.
If you used the one liner above, you do not need to do this. Using this option is for those who want to do this step by step and understand what each step does - casual to new Linux users, please use the above oneliner as it prevents typos.
If you prefer step by step as an alternative (slower):
sudo add-apt-repository "deb http://archive.ubuntu.com/ubuntu/ jammy-proposed main restricted universe multiverse"
sudo apt update && sudo apt install linux-firmware/jammy-proposed
sudo sed -i 's/^deb http:\/\/archive.ubuntu.com\/ubuntu\/ jammy-proposed/# &/' /etc/apt/sources.list
sudo apt update && sudo rm /lib/firmware/mediatek/WIFI_MT7922_patch_mcu_1_1_hdr.bin
sudo rm /lib/firmware/mediatek/WIFI_RAM_CODE_MT7922_1.bin
cd /tmp
wget https://gitlab.com/kernel-firmware/linux-firmware/-/raw/0a18a7292a66532633d9586521f0b954c68a9fbc/mediatek/WIFI_MT7922_patch_mcu_1_1_hdr.bin
wget https://gitlab.com/kernel-firmware/linux-firmware/-/raw/0a18a7292a66532633d9586521f0b954c68a9fbc/mediatek/WIFI_RAM_CODE_MT7922_1.bin
sudo mv WIFI_MT7922_patch_mcu_1_1_hdr.bin /lib/firmware/mediatek/
sudo mv WIFI_RAM_CODE_MT7922_1.bin /lib/firmware/mediatek/ && sudo update-initramfs -u