Possible solution to Mass Storage mode? (for rooted Xperia S) - Sony Xperia P, U, Sola, Go

Ignore this entire thread. You probably want to install this:
http://forum.xda-developers.com/showthread.php?t=1744878
I had a look around and couldn't find a definitive answer for setting up an Xperia S to work in mass storage mode when connected to the PC. Whenever I plugged my shiney new Xperia S into the computer it was trying to connect as MTP and PTP, which isn't very nice.
This won't work if your phone isn't rooted and is very much in the 'I've attacked my phone with a file-manager with root privileges' kind of state, so I have no idea if it'll work.
That said, can someone brave try this and see if they're able to have the same success (note: make a backup and whatever else before trying, make sure you have some idea of what's going on, and most importantly you do so at your OWN risk!):
1. Firstly, download this APK (or compile your own, source code at the bottom)
http://www.mediafire.com/download.php?5xe7flqug7v51lw
All this app does is call UsbManager.setCurrentFunction("mass_storage", true) which sets the USB connection into mass storage mode.
2. Copy the APK into /system/app then reboot your phone. This app needs root privileges
3. Run the app. It should says 'success' in a Toast.
4. When you connect your phone to your PC, you should see a removable drive appear that has no media inserted, instead of the MTP/PTP icons you'd see normally.
5. Then install Multi-mount SD card
https://play.google.com/store/apps/details?id=com.rafoid.multimountsdcard.widget.free&hl=en
6. Then add the Multi-mount SD card widget and tap on it. You should now see your phones internal storage mounted as a proper mass-storage drive
If you want to return back to MTP mode, create a shortcut to the 'com.android.settings.UsbSettings' activity in the 'Settings' app using a decent launcher (like ADWLauncher, Apex Launcher et al), and run the shortcut. This should then show you MTP or PTP modes as radio buttons.
Other notes:
I'm running the normal Sony Xperia rom (version .453), and this kernel: http://forum.xda-developers.com/showthread.php?t=1729280
I also renamed all the usb-mtp-* apks in /system/app to *.bak, but I don't know if this is necessary. Basically, I started ripping bits and pieces out of the /system/ folder to see what happened
APK source code: (create a new Android project with an activity, and slap the code in onCreate)
Add this uses-permission to AndroidManifest.xml: android.permission.MANAGE_USB
Object service = this.getSystemService("usb");
Class usbClass=service.getClass();
try {
Log.i("USBHACK", "Getting method");
Method setCurrentFunction = usbClass.getDeclaredMethod("setCurrentFunction", new Class[] { String.class, boolean.class });
Log.i("USBHACK", "Trying invoke");
setCurrentFunction.invoke(service, "mass_storage", true);
Log.i("USBHACK", "Success");
Toast.makeText(this, "Success", Toast.LENGTH_LONG).show();
}catch (Exception ex) {
Object b=ex;
b=b;
Log.e("USBHACK", "Fail", ex);
Toast.makeText(this, "Failed "+ex.getClass().getName()+": "+ ex.getMessage(), Toast.LENGTH_LONG).show();
}

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Have you used this?
http://forum.xda-developers.com/showthread.php?t=1744878
I have used this to enter mass storage mode since I used ICS. Or if you are using GB you can use V1 from DoomLord

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U can just freeze all the MTP acess after u root your device using Titanium Pro or use SD CARD MOUNTER (Search XDA) By the way, i dont think u'll face this issues on ICS firmware. Used to face the problem at GB firmware. No more over in ICS

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ryan328 said:
Have you used this?
http://forum.xda-developers.com/showthread.php?t=1744878
I have used this to enter mass storage mode since I used ICS. Or if you are using GB you can use V1 from DoomLord
Click to expand...
Click to collapse
I have not! That works perfectly, only it didn't turn up in my search.
Case closed, abandon thread!