In tickets, A user named Thomas was kind enough to share these steps working for him, just copy/pasting here.
Stage files in case things go horribly wrong
UPDATE_DIR=“wifi-firmware-update”
mkdir -p $UPDATE_DIR/{old,new}
cd $UPDATE_DIR
Fetch the new firmware
Save the old firmware
cp /lib/firmware/mediatek/WIFI_MT7922_patch_mcu_1_1_hdr.bin old/
cp /lib/firmware/mediatek/WIFI_RAM_CODE_MT7922_1.bin old/
Remove the old firmware
sudo rm /lib/firmware/mediatek/WIFI_MT7922_patch_mcu_1_1_hdr.bin
sudo rm /lib/firmware/mediatek/WIFI_RAM_CODE_MT7922_1.bin
Copy the new firmware into place
sudo cp new/*.bin /lib/firmware/mediatek
Update initramfs
sudo update-initramfs -u