Utah Code Ann. § 75-3-102
Except as provided in Section 75-3-1201, to be effective to prove the transfer of any property or to nominate a personal representative, a will must be declared to be valid by an order of informal probate by the registrar, or an adjudication of probate by the court, except that a duly executed and unrevoked will which has not been probated may be admitted as evidence of a devise if both:
Amended by Chapter 364, 2013 General Session