Can we modify a /system app

[Rui Palma]

There are some changes that a like to do in a /system app, can I edit the source code and repackage the app or are there some protection?

[Ivan Alex HC]

sure, all you have to do is to:

1. extract the /system/b2g/webapps/APP_FOLDER;
2. push APP_FOLDER with your modifications to /data/local/webapps/
3. extract the /data/local/webapps/webapps.json file, then change the "basepath" of the application you need from /system/b2g/webapps to /data/local/webapps

here all the guides related to your question https://sites.google.com/view/bananahackers/customizations#h.p_OP16vOFzCyFe

NOTE: you can do much more than I've already written... have fun ;)

[Rui Palma]

Thank you Ivan.