Adups has been found preinstalled on mobile devices from manufacturers such as BLU, and other mobile devices typically found on online stores such as Amazon.com. Uninstalling system apps has the potential to permanently damage your device, rendering it unusable. However, by uninstalling only the apps listed in this guide, I cant see how any damage would occur. There is another method as well; see Restoring apps onto the device below. The method involves using the ADB command line tool provided through Android Studio.”]
Source: https://forums.malwarebytes.com/topic/216616-removal-instructions-for-adups/