If you are having a black screen when loading OPL BDM3 it could be down to your FMCB card, if it was a Multi-Install (instead of Cross Region install) when it was made. I think that maybe causing problems, i need to test this theory.
Anyways, here's a way around the BDM3 back screen...
First, never have any USB thumb drives inserted in your PS2 while using MX4SIO and BDM3. If you didn't have a USB thumb drive inserted when you get a black screen, then follow the steps below:-
1) Via your PC, place a few games (less than 4GB ISO) onto your MX4SIO's DVD folder, then check after using OPL Manager the Game Titles are correct.
2) Via your PS2, install (copy/paste) OPL v1.1.0 (Github link below) onto your FMCB card, in the Boot folder.
https://github.com/ps2homebrew/Open-PS2-Loader/releases/download/v1.1.0/OPNPS2LD-v1.1.0.7z
3) Once done, turn off / stand-by your PS2 and insert your MX4SIO into your PS2 with your FMCB
4) Turn on PS2 and load up OPL v1.1.0, make all the setting changes (see below) using this version:
- In OPL Settings:-
- USB Device Start Mode = Auto
- Default Menu = USB
-
Press "OK" then "Save Settings" after
5) While still in OPL, load up the list of games, then press the Triangle button, and make the following changes:
- PadEmu = Global + Enabled
-
Press "OK" then "Save Settings" after
6) Restart PS2 and install (copy/paste) OPL BDM3 also to your FMCB Boot folder
7) (optional) Configure your FMCB so OPL BDM3 appears in the FMCB menu list at start up.
8) Load up OPL BDM3 and now (all being well) it should work like it should, using / sharing the changes you made from the OPL v1.1.0 because they share the same OPL (config folder) on your FMCB card now.