| Error 02 happens when you restore your iPhone 4 while the date and time has been reset to December 31, 1969. The date and time resets if you remove the battery from your iPhone or when you don't charge it for a long time. You should of fixed the date and time before you do any factory resets on iPhone 4/4S. Unfortunately, according to my knowledge, the only way to fix this is replacing a resistor which requires soldering. |