IPs location is wrong (no replies)

Hi

The location which is provided based on IPs is mostly wrong.
I got visitors from Asia which are shown from US in piwik.

How can I change the IP database to my desired DB?
I have read and gone through the tutorial to update the IP db but it seems the tutorial is old and also it's just limited to maxmind database.
I prefer to use some other accurate IP database. will be thankful if anyone help me do this.


Thanks