How to edit and rebundle CFBundleExecutable bundle

I already have one iPad aap and i just want to modify the language and few changes inside. I searched lot for the solution and i found that everything is bundled inside(i found one bundle named "micro SVR").

<key>CFBundleExecutable</key>

<string>micro SVR</string>

Can any one please guide me how can edit this and rebundle it.