Any term of this Agreement may be amended and the observance of any term of this Agreement may be waived (either generally or in a particular instance and either retroactively or prospectively), only with the written consent of the Debtor and the Secured Parties holding 75% of the aggregate principal amount of the Notes.   Any amendment or waiver effected in accordance with this Section 6 (i) shall be binding upon each Secured Party and the Debtor ; provided, however, that no amendment will be effective to increase a Secured Party’s financial obligation without such Secured Party ’s consent.