PIONEER DV-105 Multi Region Firmware?

I’m running firmware 1.30.

DvDINFO reports the drive as region 2, with 4 region changes left.

How can I make it multi region, and get rid of the 4 changes left part?

DVD-105 or DVR-105?

Either way, see here: http://pioneerdvd.rpc1.org

sorry, DVR-105, the writer