https://www.psx-place.com/threads/opl-manager-tool-to-manage-your-games.19055/#post-200607.OPLM manager doesn't install new games, only reads already installed ones.
I just used USBUtil's RIP iso function.
problem solvedYou can read again this post:
https://www.psx-place.com/threads/how-to-use-usbutil.25822/#post-200586.
Also, try different USB device.
Maybe current device has got insufficient power supply,
it is incompatible, etc.
problem solved
it was fragmented on my usb drive
so,it cannot load any game
when I format my usb
and then virus,fragmented,unnecessary file & folder remove from my usb drive
after all,my usb drive is cleaned & refreshed
and then copy X-Men Legends.iso to usb:\DVD\X-Men Legends.iso then connect to my ps2 scph-50001\N and then launch opl then I launch X-Men Legends.iso and then see it's working with smoothly like retail disc
Do you see the bold marked sentence 'Make sure the file is defragmented!', or are you still too blind to see it?!?Don't use USB-Util but OPL-Manager!!!
In OPL Manager you need to set the OPL-path... Just select your USB... It creates the necessary folders... Put the iso into the new DVD-Folder... Start OPL Manager again...
Let it do it's job.
Make sure the file is defragmented!
Secure-unplug the USB-Device, plug it into the PS2, start OPL again, try the game...