iPhone repairing for error23
how to repair iphone 3g as error23 shows & can not complete restore
may be a problem of motherboard do anybody have iphone 3g motherboard
Error 23 means the radio is not responding to the main processor when it queries the version number. On the original iPhone, the radio was on a separate board, but on the later iPhones, everything is soldered to the main PCB and there's no way to fix the part.
Occasionally, you will see somebody with a marginal part that works after a few tries (or with a fully charged battery, etc). For the most part, error 23 is unfixable and you will need to replace the main board.