I built Android 4.1.2 from source for my Nexus S using these instructions. Later I found that there are no Gapps on the phone and so I cannot set up my Google account or use the Play Store or Google Maps. I tried to download the Gapps from here and installed them from the SD card but nothing happened. How can I get them installed?
Also, is there any other way I can install Gapps?