I am having a iPhone 5s.My iPhone was functioning properly till the time it was having ios version 8.4 and when I upgraded it to ios9.0.2 my sim carrier stoped working it was not reading my sim card it was showing “searching” I tried using many sim cards but it was showing the same “searching”. Then I tried to reset my iPhone after the reset I went through the setup and It was asking to connect to a wifi network for activating the iPhone. After connecting it to a wifi network my iPhone was showing activation unsuccessfull I tried 5-6 times activating it but it dindt finished. Then I took my iPhone to iPhone technician he told to restore the ios version to 9.1 then it will work properly.Then he opened dfu mode and connected my iPhone to iTunes and tried to restore but it started to show -1 eror .We tried 7-8times but again and again it is showing -1 !!! Now anyone plz what should I do
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