Question

I use this code to save:

[[NSUserDefaults standardUserDefaults] setValue:@"vruch" forKey:@"nastoikaIP"];
[[NSUserDefaults standardUserDefaults] synchronize];

and this code to load:

NSString* automanual = [[NSUserDefaults standardUserDefaults] 
                         valueForKey:@"nastroikaIP"];

if ([automanual isEqualToString:@"vruch"]) {
    autovruch.selectedSegmentIndex = 1;
   [self obnovittext];
} 

Answer 1

You should not use the method setValue: (from the NSKeyValueCoding protocol) but setObject: (from the NSUserDefaults class) to store the string.

[[NSUserDefaults standardUserDefaults] setObject:@"vruch" forKey:@"nastroikaIP"];
[[NSUserDefaults standardUserDefaults] synchronize];

You can retrieve the string using the method stringForKey:

NSString* automanual = [[NSUserDefaults standardUserDefaults] stringForKey:@"nastroikaIP"];

Finally, note that it is generally better to define constants for the keys you use in NSUserDefaults to avoid any mistyping errors, which may be hard to debug when they happen.

Edit

It looks like you already did a mistyping error nastoikaIP != nastroikaIP. Notice the missing/extra r letter.