If the above method doesn’t work, you can try to stop Dropbox from opening on system startup by system startup settings. For some reason, it might have been reset to 2001, in which case we need to set it to the right date. Go to “Advanced Boot Options” and then in “Boot Mode” press “Enter. Note: The steps here were written for Android 4. Recovery is trying to change system settings m1 This is helpful if you've lost a bunch of files, changed settings, or installed an.