Android/Sign

By default, Android build script use testkeys to sign all the files which is in build/target/product/security/

For a decent release, build has to be signed with release keys created by specific device.

Instructions to generate all the keys resign needed. generatingKeys

If you can successful build Android for XO-4, there is a script build_release.sh which can help to resign build using specific keys.

• Put the keys generated by you in vendor/olpc/security/xo4

 cd vendor/olpc/xo4/sugar-combiner 
 . build_release.sh vendor/olpc/security/xo4