https://community.extremenetworks.com/t5/extremeswitching-exos-switch/will-it-be-possible-to-install-15-4-x-x-in-x450a-in-future/m-p/49561#M13161 I'm afraid not. Are you looking for a feature to be backported into 15.3? If so, please contact your local AM/SE.<BR /> Tue, 09 Dec 2014 16:00:00 GMT Stephane_Grosj1 2014-12-09T16:00:00Z https://community.extremenetworks.com/t5/extremeswitching-exos-switch/will-it-be-possible-to-install-15-4-x-x-in-x450a-in-future/m-p/49560#M13160 Will it be possible to install 15.4.x.x in x450a in future?<BR /> Tue, 09 Dec 2014 15:53:00 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/will-it-be-possible-to-install-15-4-x-x-in-x450a-in-future/m-p/49560#M13160 Paul11 2014-12-09T15:53:00Z https://community.extremenetworks.com/t5/extremeswitching-exos-switch/will-it-be-possible-to-install-15-4-x-x-in-x450a-in-future/m-p/49561#M13161 I'm afraid not. Are you looking for a feature to be backported into 15.3? If so, please contact your local AM/SE.<BR /> Tue, 09 Dec 2014 16:00:00 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/will-it-be-possible-to-install-15-4-x-x-in-x450a-in-future/m-p/49561#M13161 Stephane_Grosj1 2014-12-09T16:00:00Z https://community.extremenetworks.com/t5/extremeswitching-exos-switch/will-it-be-possible-to-install-15-4-x-x-in-x450a-in-future/m-p/49562#M13162 i didn't get what you mean. is it like 15.3 then 15.4 then 15.5 something in xos or not? sorry i m new here. Thanks. Tue, 09 Dec 2014 16:00:00 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/will-it-be-possible-to-install-15-4-x-x-in-x450a-in-future/m-p/49562#M13162 Paul11 2014-12-09T16:00:00Z https://community.extremenetworks.com/t5/extremeswitching-exos-switch/will-it-be-possible-to-install-15-4-x-x-in-x450a-in-future/m-p/49563#M13163 If you want to upgrade X450a to 15.4 for a specific feature which is not available in 15.3<BR /> Then contact your local SE.<BR /> <BR /> Or you just want to know whether X450a can be upgraded to 15.4<BR /> The answer is no. Last supported version is 15.3.x<BR /> <P class="fancybox-image"><span class="lia-inline-image-display-wrapper" image-alt="1de4330e6b694640b666cf35c7996f4c_RackMultipart20141211-26471-zs0svm-450a_inline.png"><img src="https://community.extremenetworks.com/t5/image/serverpage/image-id/5287i7B9080BB9967760B/image-size/large?v=v2&amp;px=999" role="button" title="1de4330e6b694640b666cf35c7996f4c_RackMultipart20141211-26471-zs0svm-450a_inline.png" alt="1de4330e6b694640b666cf35c7996f4c_RackMultipart20141211-26471-zs0svm-450a_inline.png" /></span></P><BR /> Thu, 11 Dec 2014 18:29:00 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/will-it-be-possible-to-install-15-4-x-x-in-x450a-in-future/m-p/49563#M13163 PARTHIBAN_CHINN 2014-12-11T18:29:00Z https://community.extremenetworks.com/t5/extremeswitching-exos-switch/will-it-be-possible-to-install-15-4-x-x-in-x450a-in-future/m-p/49564#M13164 Thanks Parthiban. Thu, 11 Dec 2014 18:36:00 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/will-it-be-possible-to-install-15-4-x-x-in-x450a-in-future/m-p/49564#M13164 Paul11 2014-12-11T18:36:00Z