Document:

Amendment

_____________________________________

AMENDMENT NO. 1

Dated as of June 1, 2005

to

POOLING AND SERVICING AGREEMENT

Dated as of September 1, 2004

among

CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORP.,

Depositor,

DLJ MORTGAGE CAPITAL, INC.,

Seller,

OCWEN FEDERAL BANK FSB,

Servicer

WELLS FARGO BANK, N.A.,

Servicer and Back-Up Servicer

THE MURRAYHILL COMPANY,

Credit Risk Manager

and

U.S. BANK NATIONAL ASSOCIATION,

Trustee

Home Equity Asset Trust 2004-7

HOME EQUITY PASS-THROUGH CERTIFICATES, SERIES 2004-7

______________________________________

THIS AMENDMENT NO. 1, dated as of June 1, 2005 (the “Amendment”), to the Pooling and Servicing Agreement (the “Pooling and Servicing Agreement”), dated as of September 1, 2004, among CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORP., a Delaware corporation, as depositor (the “Depositor”), DLJ MORTGAGE CAPITAL, INC., a Delaware corporation, as seller (in such capacity, the “Seller”), OCWEN FEDERAL BANK FSB, a federally chartered savings bank, as a servicer (in such capacity, a “Servicer”), WELLS FARGO BANK, N.A., a national banking association, as a servicer (in such capacity, a “Servicer”), and as back-up servicer (the “Back-Up Servicer”), THE MURRAYHILL COMPANY, a Colorado corporation, as credit risk manager (the “Credit Risk Manager”), and U.S. BANK NATIONAL ASSOCIATION, a national banking association, as trustee (the “Trustee”).

W I T N E S S E T H

WHEREAS, the Seller, the Servicers, the Depositor, the Credit Risk Manager, the Back-Up Servicer and the Trustee entered into the Pooling and Servicing Agreement;

WHEREAS, Section 10.01(a)(vi) of the Pooling and Servicing Agreement permits amendments to the Pooling and Servicing Agreement to modify, alter, amend, add to or rescind any of the terms or provisions contained in the Pooling and Servicing Agreement, provided that the Rating Agencies confirm that the Amendment will not result in the downgrading or withdrawal of the respective ratings then assigned to the Certificates;

WHEREAS, the Depositor has received a letter from each Rating Agency, copies of which are attached hereto as Exhibit A, stating that the Amendment will not result in a downgrading or withdrawal of the respective ratings then assigned to the Certificates;

NOW, THEREFORE, the parties hereto hereby agree as follows:

I.

Defined Terms.

For purposes of this Amendment, unless the context clearly requires otherwise, all capitalized terms which are used but not otherwise defined herein shall have the respective meanings assigned to such terms in the Pooling and Servicing Agreement.

II.

Amendments to Article VII.

The third paragraph of Section 7.01 is hereby amended as follows:

(i)

The words “or an Event of Default set forth in clause (iv) above” in the first sentence is hereby deleted.

The fourth paragraph of Section 7.01 is hereby amended as follows:

(i)

The words “or an Event of Default set forth in clause (iv) occurs” in the first sentence is hereby deleted.

III.

Binding Effect.

The provisions of this Amendment shall be binding upon and inure to the benefit of the respective successors and assigns of the parties hereto, and all such provisions shall inure to the benefit of the Seller, Servicers, the Back-Up Servicer, Credit Risk Manager, Depositor and Trustee.

IV.

Effective Date.

The provisions of this Amendment and the changes to the Pooling and Servicing Agreement provided for herein shall be effective as of June 1, 2005.

V.

Governing Law.

This Amendment shall be construed in accordance with the substantive laws of the State of New York (without regard to conflict of law principles) and the obligations, rights and remedies of the parties hereto shall be determined in accordance with such laws.

VI.

Severability of Provisions.

If any one or more of the provisions or terms of this Amendment shall be for any reason whatsoever held invalid, then such provisions or terms shall be deemed severable from the remaining provisions or terms of this Amendment and shall in no way affect the validity or enforceability of the other provisions or terms of this Amendment.

VII.

Section Headings.

The section headings herein are for convenience of reference only, and shall not limit or otherwise affect the meaning hereof.

VIII.

Counterparts.

This Amendment may be executed in several counterparts, each of which shall be an original and all of which shall constitute but one and the same instrument.

[signature pages follow]

IN WITNESS WHEREOF, the Depositor, the Trustee, the Seller, the Servicers, the Back-Up Servicer and the Credit Risk Manager have caused their names to be signed hereto by their respective officers thereunto duly authorized as of the day and year first above written.

CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORP.,

as Depositor

By:                   /s/ Peter J. Sack

Name: Peter J. Sack

Title: Vice President 

DLJ MORTGAGE CAPITAL, INC.,

as Seller

By:                    /s/ Kevin Steele

Name: Kevin Steele

Title: Vice President

OCWEN FEDERAL BANK FSB,

as a Servicer

By:                   /s/ Richard Delgado 

Name: Richard Delgado

Title: Vice President

THE MURRAYHILL COMPANY,

as Credit Risk Manager

By:                 /s/ Kevin J. Kanouff 

Name: Kevin J. Kanouff

Title: President

[signature page continues on following page]

WELLS FARGO BANK, N.A.,

as a Servicer

By:                   /s/ Ruth M. Kovalski 

Name: Ruth M. Kovalski

Title: Vice President

WELLS FARGO BANK, N.A.,

as Back-Up Servicer

By:      /s/ Diane E. TenHoopen

Name: Diane E. TenHoopen

Title: Vice President

U.S. BANK NATIONAL ASSOCIATION,

as Trustee

By:                   /s/ Becky Warren 

Name: Becky Warren

Title: Assistant Vice President

Exhibit A

[Rating Confirmations from Rating Agencies]

[ON FILE]amendment

_____________________________________

AMENDMENT NO. 1

Dated as of June 1, 2005

to

POOLING AND SERVICING AGREEMENT

Dated as of February 1, 2004

among

CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORP.,

Depositor,

DLJ MORTGAGE CAPITAL, INC.,

Seller,

OCWEN FEDERAL BANK FSB,

Servicer

WELLS FARGO BANK, N.A.,

Servicer and Back-Up Servicer

THE MURRAYHILL COMPANY,

Credit Risk Manager

and

U.S. BANK NATIONAL ASSOCIATION,

Trustee

Home Equity Asset Trust 2004-1

HOME EQUITY PASS-THROUGH CERTIFICATES, SERIES 2004-1

______________________________________

THIS AMENDMENT NO. 1, dated as of June 1, 2005 (the “Amendment”), to the Pooling and Servicing Agreement (the “Pooling and Servicing Agreement”), dated as of February 1, 2004, among CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORP., a Delaware corporation, as depositor (the “Depositor”), DLJ MORTGAGE CAPITAL, INC., a Delaware corporation, as seller (in such capacity, the “Seller”), WELLS FARGO BANK, N.A. (as successor in interest to Wells Fargo Home Mortgage, Inc.), a national banking association, as a servicer (in such capacity, a “Servicer”), OCWEN FEDERAL BANK FSB, a federally chartered savings bank, as a servicer (in such capacity, a “Servicer”), WELLS FARGO BANK, N.A., a national banking association, as back-up servicer (the “Back-Up Servicer”), THE MURRAYHILL COMPANY, a Colorado corporation, as credit risk manager (the “Credit Risk Manager”), and U.S. BANK NATIONAL ASSOCIATION, a national banking association, as trustee (the “Trustee”).

W I T N E S S E T H

WHEREAS, the Seller, the Servicers, the Depositor, the Credit Risk Manager, the Back-Up Servicer and the Trustee entered into the Pooling and Servicing Agreement;

WHEREAS, Section 10.01(a)(vi) of the Pooling and Servicing Agreement permits amendments to the Pooling and Servicing Agreement to modify, alter, amend, add to or rescind any of the terms or provisions contained in the Pooling and Servicing Agreement, provided that the Rating Agencies confirm that the Amendment will not result in the downgrading or withdrawal of the respective ratings then assigned to the Certificates;

WHEREAS, the Depositor has received a letter from each Rating Agency, copies of which are attached hereto as Exhibit A, stating that the Amendment will not result in a downgrading or withdrawal of the respective ratings then assigned to the Certificates;

NOW, THEREFORE, the parties hereto hereby agree as follows:

I.

Defined Terms.

For purposes of this Amendment, unless the context clearly requires otherwise, all capitalized terms which are used but not otherwise defined herein shall have the respective meanings assigned to such terms in the Pooling and Servicing Agreement.

II.

Amendments to Article VII.

The third paragraph of Section 7.01 is hereby amended as follows:

(i)

The words “or an Event of Default set forth in clause (iv) above” in the first sentence is hereby deleted.

The fourth paragraph of Section 7.01 is hereby amended as follows:

(i)

The words “or an Event of Default set forth in clause (iv) occurs” in the first sentence is hereby deleted.

III.

Binding Effect.

The provisions of this Amendment shall be binding upon and inure to the benefit of the respective successors and assigns of the parties hereto, and all such provisions shall inure to the benefit of the Seller, Servicers, the Back-Up Servicer, Credit Risk Manager, Depositor and Trustee.

IV.

Effective Date.

The provisions of this Amendment and the changes to the Pooling and Servicing Agreement provided for herein shall be effective as of June 1, 2005.

V.

Governing Law.

This Amendment shall be construed in accordance with the substantive laws of the State of New York (without regard to conflict of law principles) and the obligations, rights and remedies of the parties hereto shall be determined in accordance with such laws.

VI.

Severability of Provisions.

If any one or more of the provisions or terms of this Amendment shall be for any reason whatsoever held invalid, then such provisions or terms shall be deemed severable from the remaining provisions or terms of this Amendment and shall in no way affect the validity or enforceability of the other provisions or terms of this Amendment.

VII.

Section Headings.

The section headings herein are for convenience of reference only, and shall not limit or otherwise affect the meaning hereof.

VIII.

Counterparts.

This Amendment may be executed in several counterparts, each of which shall be an original and all of which shall constitute but one and the same instrument.

[signature pages follow]

IN WITNESS WHEREOF, the Depositor, the Trustee, the Seller, the Servicers, the Back-Up Servicer and the Credit Risk Manager have caused their names to be signed hereto by their respective officers thereunto duly authorized as of the day and year first above written.

CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORP.,

as Depositor

By:                   /s/ Peter J. Sack

Name: Peter J. Sack

Title: Vice President 

DLJ MORTGAGE CAPITAL, INC.,

as Seller

By:                    /s/ Kevin Steele

Name: Kevin Steele

Title: Vice President

WELLS FARGO BANK, N.A.,

as a Servicer

By:                   /s/ Ruth M. Kovalski 

Name: Ruth M. Kovalski

Title: Vice President

OCWEN FEDERAL BANK FSB,

as a Servicer

By:                   /s/ Richard Delgado 

Name: Richard Delgado

Title: Vice President

[signature page continues on following page]

THE MURRAYHILL COMPANY,

as Credit Risk Manager

By:                 /s/ Kevin J. Kanouff 

Name: Kevin J. Kanouff

Title: President

WELLS FARGO BANK, N.A.,

as Back-Up Servicer

By:                   /s/ Diane E. TenHoopen

Name: Diane E. TenHoopen

Title: Vice President

U.S. BANK NATIONAL ASSOCIATION,

as Trustee

By:                   /s/ Becky Warren 

Name: Becky Warren

Title: Assistant Vice President

Exhibit A

[Rating Confirmations from Rating Agencies]

[ON FILE]

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