UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549


                                 FORM 10-K/A

[X]      Annual  report  pursuant  to  Section  13 or  15(d)  of the Securities
         Exchange   Act  of  1934   for   the    period  from  February 1, 2002
         (Commencement of Operations) to December 31, 2002

[  ]     Transition report pursuant to Section 13 or 15(d) of the
         Securities Exchange Act of 1934 for the transition period from   to


                        Commission File Number 333-61840-20

               CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORP.
             (Exact name of registrant as specified in its charter)

         Delaware                                            13-3320910
(State or other jurisdiction of                           I.R.S. Employer
incorporation or organization)                            Identification No.)

11 Madison Ave.
New York, New York                                             10010
(Address of Principal Executive Offices)                      (Zip Code)

       Registrant's telephone number, including area code :(212)325-2000


         CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORP.
    CSFB MORTGAGE-BACKED PASS-THROUGH CERTIFICATES, SERIES 2002-7
       (Title of each class of securities covered by this Form)

Securities registered pursuant to Section 12(b) of the Act:  None
Securities registered pursuant to Section 12(g) of the Act:  None

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the  preceding 12 months (or for such  shorter  period that the  registrant  was
required  to file  such  reports),  and  (2) has  been  subject  to such  filing
requirements for the past 90 days. Yes [X] No [ ]

Indicate by check mark if disclosure of delinquent  filers  pursuant to Item 405
of Regulation  S-K is not contained  herein,  and will not be contained,  to the
best of registrant's  knowledge,  in definitive proxy or information  statements
incorporated  by  reference in  Part III of this Form 10-K or any amendment to
this Form 10-K. [X]

Documents incorporated by reference:  None

<PAGE>

                             AMENDMENT NUMBER 1 OF 1

                                       -2-

<PAGE>

CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORP.
CSFB MORTGAGE-BACKED PASS-THROUGH CERTIFICATES, SERIES 2002-7
-------------------------------------------------------------

PART IV

Item 14. Exhibits, Financial Statement Schedules and Reports on Form 8-K

(a) The following documents are filed as part of this report:

    (1) Financial Statements:
         Omitted.

    (2)  Financial Statement Schedules:
         Omitted.

    (3)  Exhibits:

     Annual  Independent  Accountant's  Servicing Reports  concerning  servicing
activities for the year ended December 31, 2002, filed as Exhibit 99.1 hereto.

     Report of Management as to Compliance with Minimum Servicing  Standards for
the year ended December 31, 2002, filed as Exhibit 99.2 hereto.

(b)   Reports on Form 8-K: The  following  Current  Reports on Form 8-K were
      filed by the Registrant during the last quarter of 2002.

      Current  Reports   on Form 8-K,   dated   October 25,  2002,  November 25,
     2002,  and  December  26,  2002,  were filed for the  purpose of filing the
     Monthly  Statement  sent to the  Holders of the  Offered  Certificates  for
     payments made on the same dates.  The items reported in such Current Report
     were Item 5 (Other Events).


(c)   Exhibits to this report are listed in Item (14)(a)(3) above.

                                      -3-
<PAGE>


CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORP.
CSFB MORTGAGE-BACKED PASS-THROUGH CERTIFICATES, SERIES 2002-7
--------------------------------------------------------------


Annual report  pursuant to Section 13 or 15(d) of the  Securities  Exchange
Act of 1934 for the fiscal year ended December 31, 2002

SIGNATURE

Pursuant to the  requirements of Section 13 or 15(d) of the Securities  Exchange
Act of 1934,  the  registrant  has duly  caused  this report to be signed on its
behalf by the undersigned thereunto duly authorized.

                                    CREDIT SUISSE FIRST BOSTON MORTGAGE
                                    SECURITIES CORP.



Date:  March 25, 2004              By:  /s/ Andrew Kimura
                                    -----------------------------
                                    Name:  Andrew Kimura
                                    Title: Vice President



                                      -4-
<PAGE>

                                CERTIFICATION


         Re:      Credit Suisse First Boston Mortgage Securities Corp.,
                  CSFB Mortgage-Backed Pass-Through Certificates, Series 2002-7

                  I, Andrew Kimura, certify that:

     1. I have reviewed  this annual  report on Form 10-K/A,  and all reports on
Form 8-K  containing  distribution  and  servicing  reports  filed in respect of
periods   included  in  the  year  covered  by  this  annual  report,   of  CSFB
Mortgage-Backed Pass-Through Certificates, Series 2002-7 (the "Trust");

     2. Based on my knowledge,  the  information  in these  reports,  taken as a
whole, does 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 as of the
last day of the period covered by this annual report;

     3. Based on my  knowledge,  the  distribution  information  required  to be
prepared  by the Trustee  based upon the  servicing  information  required to be
provided by each Servicer under the Pooling and Servicing  Agreement is included
in these reports;

     4. Based on my knowledge and upon the annual compliance statements included
in the report and required to be delivered to the Trustee in accordance with the
terms of the Pooling and Servicing  Agreement and based upon the review required
under the  Pooling  and  Servicing  Agreement,  and except as  disclosed  in the
report,  each  Servicer  has  fulfilled  its  obligations  under the Pooling and
Servicing Agreement; and

     5. The  reports  disclose  all  significant  deficiencies  relating to each
Servicer's  compliance with the minimum servicing standards based, in each case,
upon the report provided by an independent public accountant, after conducting a
review in compliance  with the Uniform Single  Attestation  Program for Mortgage
Bankers or similar standard as set forth in the Pooling and Servicing Agreement,
that is included in these reports.

     Capitalized terms used but not defined herein have the meanings ascribed to
them in the  Pooling  and  Servicing  Agreement,  dated  February  1,  2002 (the
"Pooling and Servicing  Agreement"),  among Credit Suisse First Boston  Mortgage
Securities Corp., as depositor (the "Depositor"), DLJ Mortgage Capital, Inc., as
a seller (in such capacity, the "Seller"), Washington Mutual Mortgage Securities
Corp.,  as a servicer (in such capacity,  a "Servicer") and as a seller (in such
capacity, a "Seller"), GreenPoint Mortgage Funding, Inc., as a servicer (in such
capacity, a "Servicer") and as a seller (in such capacity, a "Seller"),  Olympus
Servicing,  L.P., as a servicer (in such capacity, a "Servicer") and the special
servicer (in such capacity,  the "Special Servicer") and JPMorgan Chase Bank, as
trustee (the "Trustee").

Dated:  March 25, 2004



By:     /s/ Andrew Kimura
-------------------------------------
Name:   Andrew Kimura
Title:  Vice President

                                      -5-
<PAGE>

                                 EXHIBIT INDEX

Exhibit Description

99.1    Annual Independent Accountant's Servicing Report for the year ended
        December 31, 2002

        a) GreenPoint Mortgage Funding, Inc., as Servicer
        b) Washington Mutual Mortgage Securities Corp., as Servicer
        c) Fairbanks Capital Corporation (formerly Olympus Servicing LP,
            as Special Servicer

99.2    Report of Management as to compliance with minimum servicing standards
        for the year ended December 31, 2002.

        a) GreenPoint Mortgage Funding, Inc., as Servicer
        b) Washington Mutual Mortgage Securities Corp., as Servicer
        c) Fairbanks Capital Corporation (formerly Olympus Servicing LP,
            as Special Servicer

                                      -6-
<page>





                                  EXHIBIT 99.1
      Annual Independent Accountant's Servicing Report for the year ended
                                December 31, 2002


                                      -7-

<PAGE>


PricewaterhouseCoopers, LLP
400 S. Hope Street
Los Angeles, CA  90071


REPORT OF INDEPENDENT ACCOUNTANTS


To the Board of Directors and Shareholder of
GreenPoint Mortgage Funding, Inc.


     We have examined management's  assertion about GreenPoint Mortgage Funding,
Inc.'s (the "Company"), a wholly owned subsidariy of GreenPoint Bank, compliance
with  the  minimum  servicing  standards  identified  in  the  Mortgage  Bankers
Association of America's Uniform Single Attestation Program for Mortgage Bankers
("USAP")  as of and for  the  year  ended  December  31,  2002  included  in the
accompanying management assertion (see Exhibit 1). Management is responsible for
the  Company's   compliance  with  these  minimum   servicing   standards.   Our
responsibility  is to express an opinion  on  management's  assertion  about the
Company's compliance based on our examination.

     Our  examination  was  made  in  accordance  with   attestation   standards
established  by the  American  Institute of Certified  Public  Accountants  and,
accordingly,  included examining,  on a test basis, evidence about the Company's
compliance  with the  minimun  servicing  standards  and  performing  other such
procedures as we considered necessary in the circumstances.  We believe that our
examination  provides a reasonable  basis for our opinion.  Our examination does
not  provide  a  legal  determination  on  the  company's  compliance  with  the
standards.

     In our opinion,  management's  assertion that the Company complied with the
aforementioned minimum servicing standards as of and for the year ended December
31, 2002 is fairly stated, in all material respects.


By:  /s/PricewaterhouseCoopers, LLC
------------------------------------
PricewaterhouseCoopers, LLC


March 27, 2003

                                      -8-
<page>

Deloitte & Touche LLP
700 5th Avenue
Seattle Washington 98104
phone (206) 292-1800


INDEPENDENT ACCOUNTANTS' REPORT ON
COMPLIANCE WITH UNIFORM SINGLE ATTESTATION
PROGRAM FOR MORTGAGE BANKERS

Board of Directors
To Washington Mutual, Inc.

     We have examined  management's  assertion about Washington Mutual, Inc. and
subsidiaries'  (the Company)  compliance  with the minimum  servicing  standards
identified  in the Mortgage  Bankers  Association  of America's  Uniform  Single
Attestation  Program for Mortgage  Bankers as of and for the year ended December
31, 2002  included  in the  accompanying  management  assertion.  Management  is
responsible for the Company's compliance with those minimum servicing standards.
Our responsibility is to express an opinion on management's  assertion about the
Company's compliance based on our examination.

     Our examination  was made in accordance  with standards  established by the
American  Institute of Certified Public Accountants and,  accordingly,  included
examining,  on a test basis,  evidence about the Company's  compliance  with the
minimum  servicing   standards  and  performing  such  other  procedures  as  we
considered  necessary  in the  circumstances.  We believe  that our  examination
provides a reasonable basis for our opinion.  Our examination does not provide a
legal  determination  on the  Company's  compliance  with the minimum  servicing
standands.

     In our opinion,  management's  assertion that the Company complied with the
aforementioned minimum servicing standards as of and for the year ended December
31, 2002 is fairly stated, in all material respects.


By:  /s/ Deloitte & Touche LLP
---------------------------

February 18, 2003

                                      -9-

<page>

Ernst  & Young LLP
725 South Figueroa Street
Los Angeles, CA  90017
Telephone:  (213) 977-4200
www.ey.com


                 Report on Management's Assertion on Compliance
               with Minimum Servicing Standards Set Forth in the
            Uniform Single Attestation Program for Mortgage Bankers

                       REPORT OF INDEPENDENT ACCOUNTANTS

Board of Directors
Fairbanks Capital Corp.

     We have  examined  management's  assertion,  included  in the  accompanying
report titled Report of Management, that Fairbanks Capital Corp., a wholly owned
subsidiary of Fairbanks Capital Holding Corp., (the "Company") complied with the
minimum  servicing  standards set forth in the Mortgage  Bankers  Association of
America's Uniform Single Attestation Program for Mortgage Bankers (USAP) for the
year ended  December 31,  2002.  Management  is  responsible  for the  Company's
compliance with those requirements.  Our responsibility is to express an opinion
on  management's   assertions  about  the  Company's  compliance  based  on  our
examination.

     Our  examination  was conducted in accordance  with  attestation  standards
established  by the  American  Institute of Certified  Public  Accountants  and,
accordingly,  included examining,  on a test basis, evidence about the Company's
compliance with those  requirements  and performing such other  procedures as we
considered  necessary  in the  circumstances.  We believe  that our  examination
provides a reasonable basis for our opinion.  Our examination does not provide a
legal determination on the Company's compliance with specified requirements.

     In  our  opinion,  management's  assertion,  that  NCM  complied  with  the
aforementioned  requirements  for the year ended  December 31,  2002,  is fairly
stated, in all material respects.

By:  /s/ Ernst & Young LLP
--------------------------

January 20, 2003


                                      -10-
<page>


                                  EXHIBIT 99.2
     Report of Management as to compliance with minimum servicing standards
                      for the year ended December 31, 2002


                                      -11-

<page>



                                                                Exhibit I
GreenPoint Mortgage
100 Wood Hollow Drive
Novato, CA 94945


                   Management's Assertion Regarding Compliance
                        With Minimum Servicing Standards


     As of and for  the  year  ended  December  31,  2002,  GreenPoint  Mortgage
Funding, Inc. (the "Company"), a wholly-owned subsidiary of GreenPoint Bank, has
complied in all material respects with the minimum servicing standards set forth
in the Mortgage  Bankers  Association of America's  Uniform  Single  Attestation
Program for Mortgage Bankers.

     As of and for this same period,  the Company had in effect a fidelity  bond
and errors and ommissions  policy in the amounts of $20,000,000 and $50,000,000,
respectively.

March 27, 2003


By:   /s/ Dennis Tussey
-----------------------------
Dennis Tussey
Servicing Manager


By:   /s/ David Petrini
-----------------------------
David Petrini
Chief Financial Officer


By:  /s/ S. A. Ibrahim
------------------------------
S. a. Ibrahim
Chief Financial Officer



                                      -12-

<PAGE>



                                                              Washington Mutual


     As of and for the year ended December 31, 2002, Washington Mutual, Inc. and
subsidiaries  (the  Company)  has  complied in all  material  respects  with the
minimum  servicing  standards set forth in the Mortgage  Bankers  Association of
America's Uniform Single Attestation Program for Mortgage Bankers. As of and for
this same  period,  the  Company  had in effect a  fidelity  bond and errors and
ommissions policy in the amounts of $110 million and $20 million, respectively.



By:   /s/ Craig S. Davis
-----------------------------
Craig S. Davis
President
Home Loans & Insurance Services Group


By:   /s/ Anthony T. Meola
-----------------------------
Anthony T. Meola
Executive Vice President
Home Loans & Insurance Services Group

February 18, 2003

                                      -13-

<page>

                            Fairbanks Capital Corp.

        Management's Assertion on Compliance with the Minimum Servicing
       Standards set forth in the Uniform Single Attestation Program for
                                Mortgage Bankers

                              Report of Management

     We, as members of management of Fairbanks  Capital Corp.  (the  "Company"),
are responsible for complying with the minimum servicing  standards as set forth
in the Mortgage  Bankers  Association of America's  Uniform  Single  Attestation
Program for Mortgage Bankers ("USAP").  We are also responsible for establishing
and maintaining effective internal control over compliance with these standards.
We have  performed  an  evaluation  of the Bank's  compliance  with the  minimum
servicing standards as set forth in the USAP as of December 31, 2002 and for the
year then ended. Based on this evaluation,  we assert that during the year ended
December 31, 2002;  the Company  complied,  in all material  respects,  with the
minimum servicing standards set forth in the USAP.

     As of and for the same  period,  the Bank had in effect a fidelity  bond in
the amount of  $38,000,000  and an errors and omissions  policy in the amount of
$10,000,000.

/s/  Thomas D. Basmajian
--------------------------
Thomas D. Basmajian
Chief Executive Officer

/s/ Anthony O'Boyle Beirne
---------------------------
Anthony O'Boyle Beirne
Chief Financial Officer

/s/ Barbara K. Wing
---------------------------
Barbara K. Wing
Senior Vice President and Controller

January 20, 2003

                                      -14-

<page>

3815 South West Temple
Salt Lake City, Utah  84115-4412
P.O. Box 65250
Salt Lake City, Utah  84165-0250
telephone (801) 293-1883
fax (801) 293-1297

                            Fairbanks Capital Corp.

January 29, 2003

Ernst & Young LLP
725 South Figueroa Street
Los Angelee, CA  90017

Ladies and Gentlemen:

     In  connection  with your  compliance  attestation  engagement  relating to
management's   assertion  about   Fairbanks   Capital  Corp.'s  (the  "Company")
compliance  with the minimum  servicing  standards  as set forth in the Mortgage
Banker's  Association  of  America's  Uniform  Single  Attestation  Program  for
Mortgage  Bankers  (USAP) during the year ended  December 31, 2002, we recognize
that obtaining  representations from us concerning the information  contained in
this letter is a  significant  procedure  in enabling  you to form an opinion on
whether our assertion about the Company's  compliance with the minimum servicing
standards as set forth in the USAP is fairly  stated in all  material  respects.
Accordingly,   we  make  the  following  representations  with  respect  to  our
compliance  with the  minimum  servicing  requirements  as set forth in the USAP
during  the year  ended  December  31,  2002,  which are true to the best of our
knowledge and belief.

     We  ackowledge  that,  as memebers of  management  of the  Company,  we are
responsible for complying with the minimum  servicing  standards as set forth in
the USAP. We are also  responsible for  establishing  and maintaining  effective
internal  control over  compliance  with these  standards.  We have performed an
evaluation  of the Company's  compliance  with the minimum  servicing  standards
referred to above as of December 31, 2002 and for the year then ended.  Based on
this evaluation,  the Company has complied with the minimum servicing  standards
set forth in the USAP, during the year ended December 31, 2002.

     There has been no known  noncompliance with the minimum servicing standards
for the year  from  December  31,  2002  through  the  date of your  attestation
examination report.

     As of and during the year ended  December  31,  2002,  the  Company  had in
effect a fidelity  bond in the  amount of  $38,000,000  and a  mortgage  bankers
errors and omissions policy insurance policy in the amount of $10,000,000.

     We have made available to you all documentation  related to compliance with
the minimum servicing standards.

     There have been no instances of fraud involving  managment or employees who
have  significant  roles in internal  control over  compliance  with the minimum
servicing  standards.  There have been no  instances  of fraud  involving  other
employees  that could  have a material  effect on  compliance  with the  minimum
servicing standards.

     There have been no  communications  (received by  management or our general
counsel) from any trustees,  insurers,  investors,  regulatory agencies,  rating
agencies,  outside  consultants,  or the Company's internal auditors  concerning
possible  noncompliance  with  the  minimum  servicing  standards  (or  possible
significant  noncompliance with servicing agreements) in the year ended December
31, 2002 and through the date of your attestation  examination  report except as
previously disclosed to you in our letter dated January 29, 2003.

     We have not been audited by any trustees or  investors in  connection  with
minimum  servicing  standards  or  servicing  agreements  during  the year ended
December 31, 2002 or through the date of your attestation examination report. As
a result,  we have not received any audit reports,  review  reports,  or similar
reports,  including  any  draft or final  reports,  from any such  companies  or
agencies  in the  year  ended  December  31,  2002 or  through  the date of your
attestation examination report.

     In the prior year, the trustees, insurers, investors,  regulatory agencies,
rating  agencies and other auditors have either not performed an audit or review
of our servicing or have  evaluated our  servicing as  satisfactory  without any
material adverse findings.

     We are subject to an annual  examination by MBIA;  however,  no examination
report has been  issued in 2002.  in  addition,  certain  rating  agencies  have
assigned a servicer  rating to the Company.  These reports have been shared with
you as they have become available.

     No events or  transactions  have  occurred  since  December 31, 2002 or are
pending that woud have an effect on our  compliance  with the minimum  servicing
standards at that date or for the year then ended.

     We  understand  that your  examination  was  conducted in  accordance  with
attestation  standards established by the American Institute of Certified Public
Acountants, and was, therefore, designed primarily for the purpose of expressing
an opinion on whether our  assertion is fairly  stated in all material  respects
based on criteria  established by the Mortgage Bankers Association and that your
procedures were limited to those that you considered necessary for that purpose.

Very truly yours,

/s/  Thomas D. Basmajian
--------------------------
Thomas D. Basmajian
Chief Executive Officer

/s/ Anthony O'Boyle Beirne
---------------------------
Anthony O'Boyle Beirne
Chief Financial Officer

/s/ Barbara K. Wing
---------------------------
Barbara K. Wing
Senior Vice President and Controller


                                      -15-