A while ago, I had accidentallupgradeded my Itunes firmware to 4.2.1. It makes my phone running so slow. I don't like this version. I want to back to my 3.0 or little higher. I follow the way for DFU MODE. But every time is goes to RECOVERY MODE. It's so hard to enter DFU MODE. I click shift and restore, chose the firmware I want. Then it running, but it not complete.
The Iphone could not be restored.
An unknown error occurred (1015)
The Iphone could not be restored.
An unknown error occurred (1611)
Anyone know how can I downgrade to the old version?
Thank you.
The Iphone could not be restored.
An unknown error occurred (1015)
The Iphone could not be restored.
An unknown error occurred (1611)
Anyone know how can I downgrade to the old version?
Thank you.