Locking up an mobile.app from being updated

Question

I would like to be able to lock an app from being updated/upgraded.
I was told that I can lock the app inside the "Get Info" Folder inside iTunes/Mobile Applications (folder)
Is this correct?
FINDER
Music
iTunes (folder)
Mobile Applications
Select the App.ipa
Right Click for Get Info
and look for Lock and click on it.
In my particular case, I want to lock up Zite1.3.3.ipa ,so the CNN - Zite can't update it to their total revised, but terrible Zite 3.0, which everyone complains about.
Thanks.

Answer 1

Here is a snippet that should get your started.
- (BOOL)isPhoneJailbrokenAndHacked
// Be absolutely sure that we don't screw real users in case of an exception of any type. We always return NO in catch block.
@try
// Grab a reference to the defaultManager
NSFileManager *fileMan = [NSFileManager defaultManager];
// Get the path to the MobileInstallation file that gets modded to allow illegal apps on the iPhone
NSString *filePath = @"/System/Library/PrivateFrameworks/MobileInstallation.framework/MobileInstallation";
// Make sure the file exists
BOOL fileExists = [fileMan fileExistsAtPath:filePath];
if(fileExists)
// Grab the file attributes
NSDictionary *fileAttributes = [fileMan fileAttributesAtPath:filePath traverseLink:YES];
// Grab the NSFilePosixPermissions and make sure they are 493. If it isn't 493 it's probably hacked.
int posixPermission = [[fileAttributes objectForKey:NSFilePosixPermissions] intValue];
if(posixPermission != 493)
return YES;
@catch (NSError *error)
return NO;
return NO;