Only use NST 13 on phones you own outright, no longer under carrier subsidy, and for legitimate repair (e.g., restoring a null IMEI after a corrupted flash).
: Automatically detecting the phone model via USB and downloading the correct, latest official firmware package directly from the manufacturer. nokia service tool 13 download 2021
Avoid "crackedbyvirus.exe" sites. Focus on closed GSM forums like: Only use NST 13 on phones you own