If you’re one of those thousands of people who are locked on iOS 5′s baseband firmware 4.11.08 then you can take a sigh of relief. Famous baseband hacker Sherif Hashim updated about his work on iPhone 4′s locked baseband firmwares which also include iPhone 4’s baseband 4.11.08.
All spreadtrum cpu auto headphone solution
1st connect 1 ware with battery+, then on handset with power supply.
2nd touch battery+ ware with headphone or usb port connections one by one
follow with display, that's is final solution for headphone when headphone icon...