I'm trying to open galaxy health to sync with a new watch series 4, but I keep getting, Access denied. Unauthorized changes were made to the phone (0x040000011060F061500). This might have something to do with the phone being rooted before I bought it secondhand. Can anyone help?
Sounds like the previous account wasn't removed in the correct procedure before reset. You can try going into the developer options and turning on the tab for allowing the bootloader to be unlocked. Then factory reset the phone.