Depends what country you are in. Origa don't appear to have a US distributor. Madeira Games in UK are UK distributor for Origa and can chip any PS2 (they did mine) or can presumably procure any PS2 and chip it.

With the correct diagram, any PS2 Repair Centre as advertised on the web can chip it for you. For example, anyone in the USA who successfully did NEO4 can do Origa.

I understand your feeling of uncertainty but this is relly a case i=of "is she is or is she ain't"!!