The apache suffix names support methods to have apache support apk ipk downloads

Es0en.types file in \conf\ directory, add the following:

text/vnd.sun.j2me.app-descriptor jad; 
application/java-archive jar war ear; 
application/x-java-archive-diff jardiff; 
application/vnd.android.package-archive apk; 
application/vnd.ms-cab-compressed cab; 
application/octet-stream bin exe dll; 
application/vnd.symbian.install sis; 
x-epoc/x-sisx-app sisx; 
application/iphone pxl ipa; 
application/vnd.palm prc pdb; 
application/vnd.webos.ipk ipk; 
application/vnd.rim.cod cod; 
application/mrp mrp; 
x-nokia-widget wgz; 
application/octet-stream deb; 

After saving, restart apache.