This iPhone¬†6 has been liquid damaged¬†and after we’ve¬†cleaned the board and tried to turn it on we found out phone doesn’t boot properly and when we’ve restored it with¬†iTunes we received error 4013 and phone got stuck on iTunes recovery mode.

In this case, we have to remove the nand¬†ic chip and put it into the nand¬†programmer and program it again to fix error 4013. After all, we’ve¬†reballed the nand¬†ic and installed it on the logic board and restored it by iTunes Completely and phone turned¬†on without any issue.

WiFi stopped working after this iPhone¬†7 has been dropped badly and WiFi got Grayed Out and it couldn’t find any wifi network. So We have replaced the WiFi IC Chip and also we’ve removed the¬†wifi lock from NAND IC Chip by NAND Programmer to Solve the issue.