UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

~~FORM~~ Form 8-K

CURRENT REPORT

~~PURSUANT TO~~Pursuant ~~SECTION~~to Section 13 ORor 15(d) OFof ~~THE~~the

~~SECURITIES~~Securities ~~EXCHANGE~~Exchange ~~ACT~~Act OFof 1934

Date of Report (Date of earliest event ~~reported)~~

27Reported): January 9, 2006 Credit Suisse First Boston Mortgage Securities Corp. CSFB Home Equity Asset Trust 2004-~~Dec-04~~1

Credit Suisse First Boston Mortgage Securities Corp. Home Equity Asset Trust 2004-1, Home Equity Pass-Through Certificates, Series 2004-1

CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORP.
(Exact name of registrant as specified in its charter)
Delaware	333-127872	13-3320910
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)

Eleven Madison Avenue New York, New York 10010
(Address of Principal Executive Offices) (Zip Code)

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

~~Credit~~Check ~~Suisse~~the ~~First~~appropriate ~~Boston~~box ~~Mortgage~~below ~~Securities~~if ~~Corp.~~ the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

(Exact Name of Registrant as Specified in its Charter)

Delaware	333-107055-22	13-3320910
(State or Other Jurisdiction Of Incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)

11 Madison Avenue New York, New York(Address of PrincipalExecutive Offices) 10010 (Zip Code)

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

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

[ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

[ ] Soliciting material pursuant to Rule 14a-12~~(b)~~ under the Exchange Act (17 CFR 240.14a-12(b))

[ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

[ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 8.01. Other Events.

~~On 27~~This Current Report on Form 8-~~Dec-04~~ K is being filed to file a ~~scheduled~~copy ~~distribution~~of ~~was~~Amendment ~~made~~No. ~~from~~1 to the ~~Trust~~Pooling toand ~~holders~~Servicing Agreement dated as of ~~the~~February ~~Certificates~~1, 2004, among Credit Suisse First Boston Mortgage Securities Corp., ~~The~~as ~~Trustee has~~depositor, ~~caused~~DLJ toMortgage beCapital, ~~filed~~Inc., ~~with~~as ~~the~~seller, ~~Commission~~Ocwen Federal Bank FSB, ~~the~~as ~~Monthly~~a ~~Report~~servicer, ~~dated 27-Dec-04~~Wells Fargo Bank, N.A., as a servicer and as back-up servicer, The ~~Monthly~~Murrayhill ~~Report~~Company, isas ~~filed~~credit ~~pursuant~~risk tomanager and inU.S. ~~accordance~~Bank ~~with~~National Association, as trustee (1)the ~~numerous~~“Pooling ~~no-action~~and ~~letters~~Servicing (2Agreement”) ~~current~~, ~~Commission~~in ~~policy~~connection inwith the ~~area~~issuance by Home Equity Asset Trust 2004-1 of Home Equity Pass-Through Certificates, Series 2004-1.

Item 9.01 ~~Financial Statements and Exhibits~~.

~~(C)~~Financial Statements and Exhibits.

~~Exhibit No. 99.1~~(q)

~~Monthly~~Not ~~Distribution Report dated: 27-Dec-04~~applicable.

(r)

Not applicable.

(s)

Exhibits:

4.1	Amendment No. 1 to the Pooling and Servicing Agreement

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the ~~Registrant~~registrant has duly caused this report to be signed on its behalf by the undersigned ~~hereunto~~thereunto duly authorized.

CREDIT SUISSE FIRST BOSTON MORTGAGE CORP. By: ~~U.S.~~ ~~Bank~~/s/ ~~National~~Kevin ~~Association,~~Steele__ ~~as Trustee for~~Name: Kevin Steele Title: Vice President

~~Credit~~Dated: January ~~Suisse~~9, ~~First Boston Mortgage Securities Corp. Home Equity Asset Trust 2004-1~~2006

~~Home~~EXHIBIT ~~Equity Pass-Through Certificates~~4.1

SERIES 2004-1

By:

/s/ Sheryl Christopherson

Name:

Sheryl Christopherson

Title:

Vice President

Dated: 29-Dec-04

Index to Exhibits

Exhibit No. 99.1

Monthly Distribution Report dated: 27-Dec-04

Filing Compare · CFSB MOR SEC CORP HOME EQUITY ASSET TRUST 2004-1