**Wilshire
                  Credit Corporation****Payments**P.O.
                  Box 30040; Los Angeles, CA 90030-0040or
                  P.O. Box 650314; Dallas, TX 75265-0314Exhibit
                  T
              **Correspondence**P.O.
                  Box 8517; Portland, OR 97207-8517SARBANES-OXLEY
                              CERTIFICATION
              **Phone**(503)
                  952-7947(888)
                  502-0100**Fax**(503)
                  952-7476March
                  1, 2007
              **Web
                  Site**www.wfsg.com


Merrill
        Lynch Mortgage Investors, Inc.
 250
        Vesey
        Street
 4
        World
        Financial Center, 10th Floor
 New
        York,
        New York 10080
  LaSalle
        Bank National Association
 135
        South
        LaSalle Street
 Chicago,
        Illinois 60603
 Attn:   
          Jennifer Wilt, Corporate Trust Services-Merrill Lynch Mortgage
 Investors Trust, Series 2006-RM4
  Re: Merrill
          Lynch Mortgage Investors Trust, Mortgage Loan Asset-Backed Certificates,
          Series
          2006-RM4, Pool 680
  I,
          Ken Frye, Senior Vice President,
          Loan Servicing, certify that:
  1.  I
          have reviewed the report on Form 10-K and all reports on Form 10-D required
          to
          be filed in respect of the period covered by this report on Form 10-K of
          Merrill
          Lynch Mortgage Investors, Inc., Depositor (the “Exchange Act periodic
          reports”);
  2.  Based
          on my knowledge, the Exchange Act periodic reports, taken as a whole, do
          not
          contain any untrue statement of a material fact or omit to state a material
          fact
          necessary to make the statements made, in light of the circumstances under
          which
          such statements were made, not misleading with respect to the period covered
          by
          this report;
  3.  Based
          on my knowledge, all of the distribution, servicing and other information
          required to be provided under Form 10-D for the period covered by this
          report is
          included in the Exchange Act periodic reports;
  4.  I
          am responsible for reviewing the activities performed by the Servicer and
          based
          on my knowledge and the compliance review conducted in preparing the Servicer
          compliance statement required by this report under Item 1123 of Regulation
          AB,
          and except as disclosed in the Exchange Act periodic reports, the Servicer
          has
          fulfilled its obligations under the Servicing Agreement; and
  5.  All
          of the reports on assessment of compliance with servicing criteria for
          ABS and
          their related attestation reports on assessment of compliance with servicing
          criteria for asset-backed securities required to be included in this report
          in
          accordance with Item 1122 of Regulation AB and Exchange Act Rules 13a-18
          and
          15d-18 have been included as an exhibit to this report, except as otherwise
          disclosed in this report. Any material instances of noncompliance described
          in
          such reports have been disclosed in this report on Form 10-K.
  In
          giving the certifications above, I
          have reasonably relied on information provided to me by the Trustee, LaSalle
          Bank National Association, an unaffiliated party.


Wilshire
      Credit Corporation,


as
      Servicer




By:
/s
      Ken Frye


Name:
      Ken
      Frye


Title:
      Senior Vice President Loan Servicing


(Senior
      Officer in charge of the servicing function of the servicer)