Hi Sam,
To install EHP7 you need to download SWPM10SPXX*.SAR.
70SWPM10SPXX*.SAR is for Products Based on SAP NetWeaver 7.0 Platform
SWPM10SPXX*.SAR is for Products Based on Platform other than NetWeaver 7.0 i.e. NetWeaver 7.1/ 7.2/ 7.3/ 7.4 & HANA
Hope this helps
Regards,
Deepak Kori