Nope. You can use iFile to change the notification sound for apps that use their own custom notification sound file but not for apps that use the default sound. The tweak PushTone in Cydia will let you do that though.
Nope. You can use iFile to change the notification sound for apps that use their own custom notification sound file but not for apps that use the default sound. The tweak PushTone in Cydia will let you do that though.