Whenever I download something on my Samsung ChatON, I receive a "Downloaded JAR are invalid" message. What should I do?
This error is a common one and it is not related to ChatON application. In order to fix it, I suggest you check if you have enough free space on your device. If you have, use Samsung PC Studio or Samsung Kies to upgrade you phone firmware. Both of them are free of charge and easy to install and use. If the problem persists, use 1-888-987-4357 phone number to get in touch with Samsung support team.