Endpoint Protection

When SEPM11 (EOSL) on January 5, 2015. My clients (SEP11) can be update definition.

I'm upgrade SEPM11 to SEPM12.1 RU4 already. But SEP i plan upgrade in next year (Feb 2015)

SEP11 can update definition from SEPM12&LUA ?, And then am using LUA downloads definition of SEP11 can be downloads?

Thankyou 

They should still get updates for the time being:

Endpoint Protection 11.x and Endpoint Protection Small Business Edition (SBE) 12.0 were both scheduled to reach End of Limited Support (EOLS) on 5 January 2014. This is the date on which engineering support and content (i.e. virus definitions) would no longer be made available for either of these products. These products would then continue to receive partial support up to their scheduled End of Support Life (EOSL) dates of 27 September 2014 and 6 April 2016, respectively.

Symantec has made the decision to extend the availability of content for both products for one year, from 5 January 2014 to 5 January 2015, to allow customers more time to complete their migration to the latest version of Endpoint Protection. To accommodate this extension, the EOSL date for Endpoint Protection 11.x has also been extended from 27 September 2014 to 5 January 2015. To align with that same date, the EOSL date for Endpoint Protection SBE 12.0 has been pulled in, from 6 April 2016 to 5 January 2015.

FAQ: Upgrading Symantec Endpoint Protection 11.x to version 12.1.x

Support life extension for Endpoint Protection 11.x and Endpoint Protection Small Business Edition 12.0.x

Best advice is to get to SEP 12.1 as soon as possible.

Endpoint Protection 11.x and Endpoint Protection Small Business Edition (SBE) 12.0 were both scheduled to reach End of Limited Support (EOLS) on 5 January 2014. This is the date on which engineering support and content (i.e. virus definitions) would no longer be made available for either of these products. These products would then continue to receive partial support up to their scheduled End of Support Life (EOSL) dates of 27 September 2014 and 6 April 2016, respectively

http://www.symantec.com/business/support/index?page=content&id=TECH211491

This will be get the update. But i recommend you that you can upgrade the client in a same version.

There are lot of issue fixed with these version.

SEP 11.x 64 bit is not compitable for ADC policy and usb block related policy not be work there.

It will be finely work in SEP 12.1 clients.