First of all: Thanks a lot for your reply! Wow! You were right! The sav.files were in the drive_c folder. Now i can finally save games! Thank you! I forgot to say that all ROMs I tried worked perfectly, even without the proper sav.files. I had no problem playing them! The only problem was just that I had no sav.files. But fortunately you solved it! But I do not like the fact that the GBA screen that normally appears after you load a game in the EZ Flash IV is not there! This is not a huge problem but I want to solve that too! The games start just immediately after loading the game without showing the GBA screen with the nice sound and I do not like that. It seems that they were not patched properly with the EZ Flash IV Client because I cannot also do the soft reset with the A+B+L+UP buttons. Do you know how to solve that? (Both) And yes, your assumption is right, I use a miniSD to a miniSD Adapter! It seems that you know a lot about Wine and how it works properly. Did you try to get the Client work with Linux? I could try to use GBATA but I want first to try to get rid of all that weird problems. I hope that you, Fast6191, or somebody else will answer my questions!