The Iphone “iPhone” could not be restored . This device isn‘t eligiblefor the requested build.

hi ,

this the message i read when i try to actived my iphone for the first time

<The Iphone “iPhone” could not be restored . This device isn‘t eligiblefor the requested build.>

I send my iPhone to Apple to repair .

My iPhone is acticed now

but i try to update today . and again this message :

<The Iphone “iPhone” could not be restored . This device isn‘t eligiblefor the requested build.>

what hapen ?? i don t know .