ROOT NEEDED - FIX ROM WITHOUT REBUILDING SUPER
Here’s an exe to do all this for you. All built in. Will add those three firmware files to your ROOTED device, then press enter to reboot.
https://dietdroid.com/speaker-fix-exe.zip
Again, after I’ve confirmed that this is good (by you confirming, after flashing boot and dtbo obviously), it will be added to the guide.