Originally Posted by POWER1FM
I did that and I have lost settings completely!
When you are changing system files, always first make a backup.
Then, don't flash zips, just manually copy... let say settings.apk to folder system, change permissions to 0644 and then move that file to app folder (system/app).
Never copy/move few files together - if you do that you'll not overwrite existing apps, you'll just get copies.
If you see, after restart, your app is not working just repeat steps from above with your backup file.
You can use this app to sign apk and it'll, most likely, work after that.
You have here my little tutorial - how to use ZipSigner app
Sent from my Z1