Microsoft has released CU April 2014 for Lync Edition Phones

New Lync Phone Edition (LPE) firmware has been released for all phones. Keeping the phones up-to-date with current firmware is imperative – too often I run into Lync certificate updates where the phones do not have a current root certificate for newly issued public certs and everything comes to a screeching halt. As a side, my basic work around for this is to setup an SE server with an internally accessible CA (read http is in the CRL and AIA), update it to the latest firmware, and then use on the phone on production. A pain, yes, but sometimes needed even if you are diligent as it is not uncommon to receive new phones with old firmware.

Product

Version

KBs

Download

Lync Phone Edition (for Aastra 6721ip and Aastra 6725ip)

4.0.7577.4444

2954032

MS Download

Lync Phone Edition (for HP 4110 and HP 4120)

4.0.7577.4444

2954033

MS Download

Lync Phone Edition (for Polycom CX500, Polycom CX600, and Polycom CX3000)

4.0.7577.4444

2954034

MS Download

Lync Phone Edition for Polycom CX700 and LG-Nortel IP Phone 8540

4.0.7577.4444

2954035

MS Download

Additional Notes: 
Lync Server 2010 build number is 4.0.7577.230
Lync 2010 Client build number is 4.0.7577.4445
Lync Server 2013 build number is 5.0.8308.577
Lync 2013 Client build number is 15.0.4605.1003

Lync Group Chat build number is 4.0.7577. 4409
Lync Group Chat Server build number 4.0.7577.4409
Lync Group Chat Admin build number 4.0.7577.4409

Lync Attendee build number is 4.0.7577.4356
Lync Attendant build number is 4.0.7577.4098
Lync Phone Editions build number is 4.0.7577.4444

Lync 2010 for Windows Phone build number 4.3.8120.0
Lync 2010 for iPhone build number 4.7
Lync 2010 for iPad build number 4.7
Lync 2010 for Android build number 4.0.6509.3001

Lync 2013 for Windows Phone build number 5.4.1087.0
Lync 2013 for iPad build number 5.4
Lync 2013 for iPhone build number 5.4
Lync 2013 for Android build number 5.3.1100

Lync Basic 2013 build number is 15.0.4420.1017
Lync VDI 2013 build number is 15.0.4420.1017