iOS :: Know if a device is capable of doing iOS7 blur effect (using UIToolBar hack) Using: https://github.com/lmirosevic/GBDeviceInfo

gistfile1.m

+ (BOOL)allowsBlurEffect {

    // I assume that any device that is not checked here is newer and therefore is "blur" capable
    static BOOL isAllowed = YES;

    static BOOL isChecked = NO;
    if (!isChecked) {
        
        isChecked = YES;
        
        GBDeviceDetails *deviceDetails = [GBDeviceInfo deviceDetails];
        
        // iOS 7 at least
        isAllowed = (deviceDetails.majoriOSVersion >= 7);
        if (isAllowed) {
            
            // If we have minimum iOS, now check the device
            switch (deviceDetails.family) {
                case GBDeviceFamilyiPhone:
                    
                    // iPhone -- 4S at least
                    isAllowed = deviceDetails.majorModelNumber >= 4;
                    
                    break;
                    
                case GBDeviceFamilyiPod:
                    
                    // iPod --- 5 Gen at least
                    isAllowed = deviceDetails.majorModelNumber >= 5;
                    
                    break;
                    
                case GBDeviceFamilyiPad:
                    
                    // iPad ---- At least 4
                    isAllowed = deviceDetails.majorModelNumber >= 4;

                    // Maybe is an iPad mini and it is allowed
                    if (!isAllowed)
                        isAllowed = deviceDetails.model == (GBDeviceModeliPadMini | GBDeviceModeliPadMiniRetina);
                    
                default:
                    break;
            }
        }
     
        NSLog(@"Device %@ blur effect", isAllowed ? @"ALLOWS" : @"DON'T ALLOWS");
    
    }
    
    return isAllowed;
    
}

Use at your own risk, wrote this in just 2 minutes.