Find Firs Wrong

Nothing has changed in the syntax, probably the problem is another, try this one that is better

$user= Persona::findFirst([
    'conditions' => 'PERS_USUARIO={id:int}',
    'bind' => [
        'id' => 1724908809
    ]
]);

if (!$user instanceof Persona) {
    throw new \Exception('User not found', 404);
}

echo $user->pers_nombre;

Good luck

it's the result

Notice: Trying to get property 'pers_nombre' of non-object in C:\xampp\htdocs\redviva\app\views\inicio\inicio.phtml on line 10

can you share us your user model and your db conection config?

it's the model

<?php
class Persona extends \Phalcon\Mvc\Model
{
public $PERS_CODIGO;
public $PERS_NOMBRE;
public $PERS_RUCIDE;
public $PERS_TIPOIDE;
public $PERS_TELEFONO;
public $PERS_DIRECCION;
public $PERS_UBICACION;
public $PERS_TIPO;
public $PERS_ETAPA;
public $PERS_CARGO;
public $PERS_FECHACREACION;
public $PERS_FECHACONSOLIDACION;
public $PERS_GANO;
public $PERS_SEXO;
public $PERS_ESTADC;
public $PERS_CORREO;
public $PERS_CELULAR;
public $PERS_CONTACTO;
public $PERS_PROVINCIA;
public $PERS_LINE;
public $PERS_USUARIO;
public $PERS_CONTRASENIA;
public $PERS_FOTO;

public function getSource()
{
    return 'persona';
}
public static function find($parameters = null)
{
    return parent::find($parameters);
}
public static function findFirst($parameters = null)
{
    return parent::findFirst($parameters);
}

}

it's the db.config

<?php

defined('APP_PATH') || define('APP_PATH', realpath('.'));

return new \Phalcon\Config(array(
'database' => array(
    'adapter'     => 'Mysql',
    'host'        => 'CAJA-PC',
    'username'    => 'jeiel',
    'password'    => 'jeiel',
    'dbname'      => 'redviva',
    'charset'     => 'utf8',
),
'application' => array(
    'controllersDir' => APP_PATH . '/app/controllers/',
    'modelsDir'      => APP_PATH . '/app/models/',
    'migrationsDir'  => APP_PATH . '/app/migrations/',
    'viewsDir'       => APP_PATH . '/app/views/',
    'pluginsDir'     => APP_PATH . '/app/plugins/',
    'libraryDir'     => APP_PATH . '/app/library/',
    'cacheDir'       => APP_PATH . '/app/cache/',
    'baseUri'        => '/red/',
)
));

Are you sure you have anything returned even? Just use debugger. Clearly you have false there like there is no such record in database.

all your columns name in table db are in uppercase? or are you using \PDO::CASE_UPPER?