Update a record's address in address book using ABAddressBook framework.

UpdateAddressOfRecordInAddressBook.m

// Prepare address values. These values will be saved in a record in iPhone's address book.
NSString *city = @"Yokohama";
NSString *state = @"Kanagawa"
NSString *country = @"Japan";

// Get a record ID.
ABRecordID recordID = self.recordID; // Assume you have a recordID.

// Create dictionary for address.
ABMutableMultiValueRef address = ABMultiValueCreateMutable(kABMultiDictionaryPropertyType);

// Set up keys and values for the dictionary.
CFStringRef keys[3];
CFStringRef values[3];
keys[0] = kABPersonAddressCityKey;
keys[1] = kABPersonAddressStateKey;
keys[2] = kABPersonAddressCountryKey;
values[0] = (__bridge CFStringRef)city;
values[1] = (__bridge CFStringRef)state;
values[2] = (__bridge CFStringRef)country;

// Create dictionary.
CFDictionaryRef aDict = CFDictionaryCreate(kCFAllocatorDefault,
                                           (void *)keys,
                                           (void *)values,
                                           3,
                                           &kCFCopyStringDictionaryKeyCallBacks,
                                           &kCFTypeDictionaryValueCallBacks);

// Add the street address to the multi value.
ABMultiValueIdentifier identifier;
bool didAdd = ABMultiValueAddValueAndLabel(address, aDict, kABHomeLabel, &identifier);
if (!didAdd) {
    NSLog(@"Failed to add new values to the record. New values dictionary: %@", aDict);
}

// Get a person record from addressBook.
ABAddressBookRef addressBook = ABAddressBookCreate();
ABRecordRef person = ABAddressBookGetPersonWithRecordID(addressBook, recordID);

// Set multi value to the record.
CFErrorRef setError = NULL;
bool didSet = ABRecordSetValue(person, kABPersonAddressProperty, address, &setError);
if (!didSet) {
    CFStringRef errorDesc = CFErrorCopyDescription(setError);
    NSLog(@"Error: %@", errorDesc);
    CFRelease(errorDesc);
}

// Save changes in address book.
bool wantToSaveChanges = YES;
bool didSave;
CFErrorRef saveError = NULL;
if (ABAddressBookHasUnsavedChanges(addressBook)) {
    if (wantToSaveChanges) {
        didSave = ABAddressBookSave(addressBook, &saveError);
        if (!didSave) {
            CFStringRef errorDesc = CFErrorCopyDescription(saveError);
            NSLog(@"Error: %@", errorDesc);
            CFRelease(errorDesc);
        }
    } else {
        ABAddressBookRevert(addressBook);
    }
}

CFRelease(aDict);
CFRelease(address);
CFRelease(addressBook);