Can't Restore iPhone 5
I have an Iphone 5 that used to work perfectly fine until one day when charging it just powered off and started a boot loop. I thought it was a software problem so I plugged it into my computer and tried to restore it but it just kept giving me error 21. So I checked some forms and they said just replace the battery so that’s what I did. I fix phones for people so this wasn’t anything new, but after I replaced the battery the phone will not open unless plugged in and when I tried to restore it again it said the iphone can’t be found. I can’t seem to figure out what the problem is