@Tudor first try editing instead of posting again please, no reason for double posts. Now I have IOS222 installed with the option of merged 37+38 and it's hermes v4. I also have cIOS249 r17 installed same as you. You do have the option to change the loading IOS to 222 instead of 249 so choose that. Monster hunter tri works for me (now) with standard settings so check your ISOs and your HDD. I can't say anything about metroid since I don't have it but try with the settings suggested and make sure everything is how we describe it. This is pretty simple to setup so you shouldn't have any problems.