How can I make my S3 unmodified?

[AC Question]

hi everyone

Can any one please tell me how to make my Samsung s3 unmodified or official because when I try to update my jellybeans undroid it keeps telling me your phone is modified there are no updates avaliable
Please tell me how to fix it without computer . And I do have a root and google store is deleted from my phone

 

[Almeuit]

Re: hi everyone

That usually means you're rooted. A rooted phone cannot accept OTA updates.