Exhibit 10.6

AMENDMENT NO. 1

TO

LOAN AND SECURITY AGREEMENT

THIS AMENDMENT NO. 1 TO LOAN AND SECURITY AGREEMENT(this
Amendment) is entered into as of this 20th day of January, 2010, by and between OPENWAVE SYSTEMS INC., a Delaware corporation (Borrower), and
SILICON VALLEY BANK (Bank). Capitalized terms used herein without definition shall have the same meanings given them in the Loan Agreement (defined below).

RECITALS

A. Borrower and Bank have entered into that certain Loan and Security Agreement dated as of January 23, 2009 (as the same may be amended, restated, supplement or otherwise modified from time
to time, the Loan Agreement), pursuant to which the Bank has agreed to extend and make available to Borrower certain advances of money.

B. Borrower desires that Bank amend the Loan Agreement upon the terms and conditions more fully set forth herein.

C. Subject to the representations and warranties of Borrower, and upon the terms and conditions set forth in this Amendment, Bank is willing to amend the Loan Agreement.

AGREEMENT

NOW, THEREFORE, in consideration of the foregoing Recitals and intending to be legally bound, the parties hereto agree as follows:

1. Amendment to Loan Agreement. Subject to the terms and conditions of this Amendment (including Section 4 below), the
amendments set forth in this Section 1 are to take effect as of January 23, 2009.

1.1
Section 3.1 (Conditions Precedent to Initial Credit Extension). Section 3.1 to the Loan Agreement is amended by inserting and after ; at the end of clause (g) and deleting clause
(h) in full.

1.2 Section 6.14 (Conditions Subsequent to Closing). Section 6.14 to
the Loan Agreement is hereby amended by deleting the and at the end of clause (a), replacing the . at the end of clause (b) with ; and and inserting the following new clause (c) thereafter:

(c) any original certificates representing equity interests of a Person along with an assignment executed in blank on or before
March 6, 2009.

2. BORROWERS REPRESENTATIONS AND
WARRANTIES. Borrower represents and warrants that:

(a) immediately upon giving
effect to this Amendment (i) the representations and warranties contained in the Loan Documents are true, accurate and complete in all material respects as of the date hereof (except to the extent such representations and warranties relate to
an earlier date, in which case they are true and correct as of such date), and (ii) no Event of Default has occurred and is continuing;



---

(b) Borrower has the corporate power and authority to execute and deliver this
Amendment and to perform its obligations under the Loan Agreement, as amended by this Amendment;

(c) the certificate
of incorporation and by-laws of Borrower (collectively, Organizational Documents) delivered to Bank on or prior to the date hereof are true, accurate and complete and have not been amended, supplemented or restated and are
and continue to be in full force and effect as of the date hereof, and Borrower shall promptly deliver to Bank any amendments, supplements, restatements or other modifications to such Organizational Documents;

(d) the execution and delivery by Borrower of this Amendment and the performance by Borrower of its obligations under the Loan
Agreement, as amended by this Amendment, have been duly authorized by all necessary corporate action on the part of Borrower;

(e) this Amendment has been duly executed and delivered by the Borrower and is the binding obligation of Borrower, enforceable against it in accordance with its terms, except as such enforceability may be limited by bankruptcy,
insolvency, reorganization, liquidation, moratorium or other similar laws of general application and equitable principles relating to or affecting creditors rights; and

(f) as of the date hereof, Borrower has no defenses against the obligations to pay any amounts under the Obligations. Borrower
acknowledges that Bank has acted in good faith and has conducted in a commercially reasonable manner its relationships with Borrower in connection with this Amendment and in connection with the Loan Documents.

Borrower understands and acknowledges that Bank is entering into this Amendment in reliance upon, and in partial consideration for, the above
representations and warranties, and agrees that such reliance is reasonable and appropriate.

3.
LIMITATION. The amendments set forth in this Amendment shall be limited precisely as written and shall not be deemed (a) to be a waiver, consent, amendment or other modification of any other term or
condition of the Loan Agreement or of any other instrument or agreement referred to therein or to prejudice any right or remedy which Bank may now have or may have in the future under or in connection with the Loan Agreement or any instrument or
agreement referred to therein; or (b) to be a consent to any future amendment or modification or waiver to any instrument or agreement the execution and delivery of which is consented to hereby, or to any waiver of any of the provisions
thereof. Except as expressly amended hereby, the Loan Agreement shall continue in full force and effect.

4.
EFFECTIVENESS. This Amendment shall become effective upon the satisfaction of all the following conditions precedent:

4.1 Amendment. Borrower and Bank shall have duly executed and delivered this Amendment to Bank.

4.2 Payment of Bank Expenses. Borrower shall have paid all Bank Expenses (including all reasonable attorneys fees and reasonable expenses) incurred through the date of this Amendment.

5. COUNTERPARTS. This Amendment may be signed in any number of counterparts, and
by different parties hereto in separate counterparts, with the same effect as if the signatures to each such counterpart were upon a single instrument. All counterparts shall be deemed an original of this Amendment.



---

6. INTEGRATION. This Amendment and any documents
executed in connection herewith or pursuant hereto contain the entire agreement between the parties with respect to the subject matter hereof and supersede all prior agreements, understandings, offers and negotiations, oral or written, with respect
thereto and no extrinsic evidence whatsoever may be introduced in any judicial or arbitration proceeding, if any, involving this Amendment; except that any financing statements or other agreements or instruments filed by Bank with respect to
Borrower shall remain in full force and effect.

7. GOVERNING LAW;
VENUE. THIS AMENDMENT SHALL BE GOVERNED BY AND SHALL BE CONSTRUED AND ENFORCED IN ACCORDANCE WITH THE LAWS OF THE STATE OF CALIFORNIA. Borrower and Bank each submit to the exclusive jurisdiction of the State and Federal courts in
Santa Clara County, California.

[Remainder of this page intentionally left blank]



---

IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be executed as of the
date first written above.



|          |  |  |  |                                               |  |                     
|--------- |  |  |  | --------------------------------------------- |  | --------------------
|BORROWER: |  |  |  | OPENWAVE SYSTEMS INC., a Delaware corporation
|          |  |  | 
|          |  |  |  | By                                            |  | /s/    Anne Brennan 
|          |  |  |  | Name:                                         |  | Anne Brennan        
|          |  |  |  | Title:                                        |  | VP Finance          
|          |  | 
|BANK:     |  |  |  | SILICON VALLEY BANK                          
|          |  |  | 
|          |  |  |  | By                                            |  | /s/    Justin Mauch 
|          |  |  |  | Name:                                         |  | Justin Mauch        
|          |  |  |  | Title:                                        |  | Relationship Manager