im struk in firmware update giving error -1

[iMore Question]

im using iphone 4s after some days when i insert the sim only giving searching.
so i restore and update using itunes.
at the time of updating error occured (-1)
and stop updating i use all solution like system update itune update using original cable latest software than also struck in firmware update and giving -1 error

 

[anon(9602380)]

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