Apple iPhone iTunes error problem is common, now here is an iPhone 6 with unknown error 4005 problem, how to best fix this problem? Generally, we can try some simple solutions first, if it's not working, then we can check the hardware aspect.
Some simple solutions (software aspect):
- Force restart iPhone 6
- Make sure the iTunes is latest version
- Try another lightning cable or USB port
After trying this solutions, the iPhone 6 still has unknown error 4005.
Next, disassemble the iPhone 6. Use phone opening tools to disassemble the iPhone 6, and then remove the iPhone motherboard.
Now use digital multimeter to measure the iPhone Nand flash, power supply 3V, iPhone power supply C0604 1.8V, CO603 1.2V and C0625, all voltage tested are normal. Next measure the resistance value for iPhone Nand flash, but it's still normal.
Use QUICK 861DW hot air rework station to remove the iPhone Nand flash, and the put iPhone motherboard under the microscope, re-welding the pins on the iPhone Nand flash, and then solder the iPhone Nand flash back to iPhone motherboard.
Next assemble the iPhone 6, connect iPhone to the computer, and then use iTunes to restore it, now it works, there is no unknown error code.
Testing the functions on iPhone 6, they all works properly. The iPhone 6 unknown error 4005 has been fixed!
Some simple solutions (software aspect):
- Force restart iPhone 6
- Make sure the iTunes is latest version
- Try another lightning cable or USB port
After trying this solutions, the iPhone 6 still has unknown error 4005.
Next, disassemble the iPhone 6. Use phone opening tools to disassemble the iPhone 6, and then remove the iPhone motherboard.
Now use digital multimeter to measure the iPhone Nand flash, power supply 3V, iPhone power supply C0604 1.8V, CO603 1.2V and C0625, all voltage tested are normal. Next measure the resistance value for iPhone Nand flash, but it's still normal.
Use QUICK 861DW hot air rework station to remove the iPhone Nand flash, and the put iPhone motherboard under the microscope, re-welding the pins on the iPhone Nand flash, and then solder the iPhone Nand flash back to iPhone motherboard.
Next assemble the iPhone 6, connect iPhone to the computer, and then use iTunes to restore it, now it works, there is no unknown error code.
Testing the functions on iPhone 6, they all works properly. The iPhone 6 unknown error 4005 has been fixed!
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