It was possible via the regular public Trial Download page when Alfresco 5.2 was the current release, but since it has been superseded by 6.0 and now 6.1 (a partial, marketing-based - not yet GA - release as it seems), Angel Borroy is correct that it is only available from Support Portal or Alfresco Aritfacts Repository using Enterprise customer / partner credentials. Note though that Alfresco 6.0 trial is still available via the publicly available Docker trial image.
Since we are neither an Enterprise customer nor an partner ,I don't have an Alfresco Support Portal account .
We are trying to upgrade one of our customer's community edition 5.2 to enterprise endition 5.2 .So we need to download a trial version of alfresco enterprise edition 5.2 first. and do some test.
If web need to be customer to access support portal,then how to become one .
Thank you for your reply.
If you are upgrading one of your customers' installation to Enterprise Edition, then your customer should have access to the Support Portal and be able to provide that artifact to you via their own access to the Support Portal. If doing services for an Enterprise customer you should not have to resort to weird workarounds to do your assigned work...
Probably the client is still struggling with Alfresco Sales... At least in Spain you can spend six months to one year till having a clear answer from Sales.
My customer has been using alfresco community edition for sevral months,now they want to upgrade into enterprise edition.They asked me to contact alfresco sales service. And I tried to contact alfresco sales by leaving a message in contact page. But I have not received any response yet.