Error 1405,4005 on iPhone 6,6 plus.
Complete solution follow the steps bellow _
Remove the Top metal plate of charger and battery connectors,
Connect the phone with itunes and start restore for restoring.
For this step you need to have a heat gun low down the heat to 160 and make the air to high presser start heating up the battery and charger port connectors warm up.
when the phone goes off wait for a while and when you see the restoring precess give it more heat for a few minutes,Then release the heat Gun and see the magic.
100% solution.