(a) A debtor or secondary obligor may waive the right to notification of disposition of collateral under section 9-611 only by an agreement to that effect entered into and signed after default.(b) A debtor may waive the right to require disposition of collateral under section 9-620(e) only by an agreement to that effect entered into and signed after default.(c) Except in a consumer-goods transaction, a debtor or secondary obligor may waive the right to redeem collateral under section 9-623 only by an agreement to that effect entered into and signed after default.Laws 1999, LB 550, § 199; Laws 2024, LB 94, § 91.Amended by Laws 2024, LB 94,§ 91, eff. 7/19/2024.