A few weeks ago, we reported on a tweak to boost the sound on the Samsung Focus (as if it wasn't loud enough). Turns out, we were a little premature as the settings did not stick.
Flash forward 10 days later and looks like the folks at XDA figured it out, so we figured we'd do an update. We also have a new one that boosts the volume when using a headphones (the Focus turns the overall volume down for obvious reasons).
The process is similar: using the Samsung Diagnosis app, enter in some values. Done. For this, we can definitely confirm the headphones are much louder...probably too loud, but you can decide. And both stick after a reboot. Post results in comments or our Focus sub-forum!
Full instructions after the break...