我剛開始也是跟你一樣都會出現錯誤(1)的代碼 後來看到這篇 1. turn it off (red slider) 2. connect to USB and run iTunes 3. press both Sleep and Home buttons for 10 seconds 4. release Sleep and keep pressing Home for another 10 seconds then release 5. iTunes recognize iPod in restore mode but THIS TIME you can restore to 1.1.1 or 1.1.2 without "uknown error".