Hello everyone,
My iPhone is V1 firmware 2.0 and would like to downgrade to 1.1.4 to implement the guide pwnage firmware 2.0 on windows. When I try to restore the phone with iTunes 7.5 and firmware iPhone1, 1_1.1.4_4A102_Restore.ipsw, iTunes gives me the error 20. So my phone is useless now, is anyone ever had this problem?
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