I need help with subject line error - "Your device has been modified. Software updates are not available" on my Galaxy S4 which is Fido Network. I got this through contract and did not try to root or modify. I searched everywhere and tried many suggested options like reset in recovery mode, cleared casche in safe mode, removing SD and SIM card but keep getting above message when I try to update my software. The phone work perfectly fine but stuck on Kitkat. Any suggestions on this?