After Microsoft published the Service Pack 1 for SQL Server 2014 already on 15 April 2015 and recalled it very quickly back, Microsoft had also quick reacted, improved and revised the Service Pack 1 and now it is republished again.
As you can read in the corrsponding MSDN-Post which steps had been taken to resolve those problems and issue with the buggy Servicepack.
Now Microsoft has published the Service Pack 1 for SQL Server 2014 again on May 15, 2015:
Approximately one year ago, we launched SQL Server 2014. Today, May 15, we are pleased to announce the release of SQL Server 2014 Service Pack 1 (SP1). The Service Pack is initially available for download on the Microsoft Download Center. SQL Server 2014 with SP1 will be rolling out to additional venues including MSDN/TechNet, the Volume Licensing center, and other channels starting May 21, 2015. SQL Server 2014 SP1 contains fixes provided in SQL Server 2014 CU 1 up to and including CU 5, as well as a rollup of fixes previously shipped in SQL Server 2012 SP2. For highlights of the release, please read the Knowledge Base Article for Microsoft SQL Server 2014 SP1. As part of our continued commitment to software excellence for our customers, this upgrade is available to all customers with existing SQL Server 2014 deployments via the download links below. Microsoft® SQL Server® 2014 SP1 Microsoft® SQL Server® 2014 SP1 Express Microsoft® SQL Server® 2014 SP1 Feature Pack Thank You! SQL Server Engineering Team