There is no 9.5.
Mac OS X 10.9.5 is not available for G4s.
The maximum operating system any G4 can take is 10.5.8, and that's only if it has at least 867 Mhz on a single CPU (1 Ghz is greater).
The maximum Mac OS 9 any G4 can take is Mac OS 9.2.2.
If you are asking about an iBook G4, please start a new topic in this forum:
iBook
If you are asking about a Powerbook G4, please start a new topic in this forum:
PowerBook
If you are asking about the white domed iMac, please post a new topic in this forum:
iMac (PPC)
Mac Mini G4s can be identified by their 25 pin DVI port on the rear. You can start a new topic thread here for them:
Mac mini
And PowerMac G4s, you can start a new topic thread here:
Power Mac
Adding a post to the end of another thread, which does not resolve the original poster's problem, or seek to find a resolution for them will make it difficult to answer the question for multiple people. It is best to have your own thread for your problem.