Hi, i have this problem with iphone 6s and am getting error 4013. i dont know if you fixed your phone or what ever but my phone was not working properly and shutting down every 3 minutes. and i see that the battery is saying, a not reconized compenent and then it got to 100% battery health. then i used the phone like normal and it worked until i shuted it down and powered back on. it was stuck on recovery mode but as i did was before this happened when it worked a little again i used a panic log program that identifies panic logs. i got a indicator that the battery was problem. even tho it says 3.8 volts the battery may is jsut broken. then i remembered that the iphone could not identify the battery so its a huge chance thats the problem. try a new battery again and try using 3utools then to exit rocevery mode. good luck.