diff --git a/file_io.cpp b/file_io.cpp
index 872c04b..71826ec 100644
--- a/file_io.cpp
+++ b/file_io.cpp
@@ -65,7 +65,7 @@ struct fileZipArchive
 	__off64_t                         offset;
 };
 
-static bool FileIsZipped(char* path, char** zip_path, char** file_path)
+static int FileIsZipped(char* path, char** zip_path, char** file_path)
 {
 	char* z = strcasestr(path, ".zip");
 	if (z)
@@ -76,9 +76,10 @@ static bool FileIsZipped(char* path, char** zip_path, char** file_path)
 
 		if (zip_path) *zip_path = path;
 		if (file_path) *file_path = z;
-		return true;
+		return 1;
 	}
-	return false;
+
+	return 0;
 }
 
 static char* make_fullpath(const char *path, int mode = 0)
@@ -235,101 +236,84 @@ void FileClose(fileTYPE *file)
 	file->filp = nullptr;
 }
 
-
-int zip_search_by_crc(mz_zip_archive *zipArchive, uint32_t crc32)
+static int zip_search_by_crc(mz_zip_archive *zipArchive, uint32_t crc32)
 {
-
 	for (unsigned int file_index = 0; file_index < zipArchive->m_total_files; file_index++)
 	{
 		mz_zip_archive_file_stat s;
-		if (mz_zip_reader_file_stat(zipArchive, file_index, &s))	
+		if (mz_zip_reader_file_stat(zipArchive, file_index, &s))
 		{
 			if (s.m_crc32 == crc32)
 			{
 				return file_index;
-			}	
+			}
 		}
 	}
 
 	return -1;
 }
 
-
-int FileOpenZip(fileTYPE *file, const char *name, uint32_t crc32, int mode, char mute)
+int FileOpenZip(fileTYPE *file, const char *name, uint32_t crc32)
 {
-	make_fullpath((char*)name, mode);
+	make_fullpath(name);
 	FileClose(file);
 	file->mode = 0;
 	file->type = 0;
 
 	char *p = strrchr(full_path, '/');
-	strcpy(file->name, (mode == -1) ? full_path : p + 1);
+	strcpy(file->name, (p) ? p + 1 : full_path);
 
 	char *zip_path, *file_path;
-	if ((mode != -1) && FileIsZipped(full_path, &zip_path, &file_path))
+	if (!FileIsZipped(full_path, &zip_path, &file_path))
 	{
-		if (mode & O_RDWR || mode & O_WRONLY)
-		{
-			if(!mute) printf("FileOpenZip(mode) Zip:%s, writing to zipped files is not supported.\n",
-					 full_path);
-			return 0;
-		}
-
-		file->zip = new fileZipArchive{};
-		if (!mz_zip_reader_init_file(&file->zip->archive, zip_path, 0))
-		{
-			if(!mute) printf("FileOpenZip(mz_zip_reader_init_file) Zip:%s, error:%s\n", zip_path,
-					 mz_zip_get_error_string(mz_zip_get_last_error(&file->zip->archive)));
-			return 0;
-		}
-
-		if (crc32)
-		{
-			file->zip->index = zip_search_by_crc(&file->zip->archive, crc32);
-		}
-
-
-
-		if (file->zip->index < 0 || !crc32)
-		{
-			file->zip->index = mz_zip_reader_locate_file(&file->zip->archive, file_path, NULL, 0);
-		}
-
-		if (file->zip->index < 0)
-		{
-			if(!mute) printf("FileOpenZip(mz_zip_reader_locate_file) Zip:%s, file:%s, error: %s\n",
-					 zip_path, file_path,
-					 mz_zip_get_error_string(mz_zip_get_last_error(&file->zip->archive)));
-			FileClose(file);
-			return 0;
-		}
-
-		mz_zip_archive_file_stat s;
-		if (!mz_zip_reader_file_stat(&file->zip->archive, file->zip->index, &s))
-		{
-			if(!mute) printf("FileOpenZip(mz_zip_reader_file_stat) Zip:%s, file:%s, error:%s\n",
-					 zip_path, file_path,
-					 mz_zip_get_error_string(mz_zip_get_last_error(&file->zip->archive)));
-			FileClose(file);
-			return 0;
-		}
-		file->size = s.m_uncomp_size;
-
-		file->zip->iter = mz_zip_reader_extract_iter_new(&file->zip->archive, file->zip->index, 0);
-		if (!file->zip->iter)
-		{
-			if(!mute) printf("FileOpenZip(mz_zip_reader_extract_iter_new) Zip:%s, file:%s, error:%s\n",
-					 zip_path, file_path,
-					 mz_zip_get_error_string(mz_zip_get_last_error(&file->zip->archive)));
-			FileClose(file);
-			return 0;
-		}
-		file->zip->offset = 0;
-		file->offset = 0;
-		file->mode = mode;
-	} else {
+		printf("FileOpenZip: %s, is not a zip.\n", full_path);
 		return 0;
 	}
+
+	file->zip = new fileZipArchive{};
+	if (!mz_zip_reader_init_file(&file->zip->archive, zip_path, 0))
+	{
+		printf("FileOpenZip(mz_zip_reader_init_file) Zip:%s, error:%s\n", zip_path,
+					mz_zip_get_error_string(mz_zip_get_last_error(&file->zip->archive)));
+		return 0;
+	}
+
+	file->zip->index = -1;
+	if (crc32) file->zip->index = zip_search_by_crc(&file->zip->archive, crc32);
+	if (file->zip->index < 0) file->zip->index = mz_zip_reader_locate_file(&file->zip->archive, file_path, NULL, 0);
+	if (file->zip->index < 0)
+	{
+		printf("FileOpenZip(mz_zip_reader_locate_file) Zip:%s, file:%s, error: %s\n",
+					zip_path, file_path,
+					mz_zip_get_error_string(mz_zip_get_last_error(&file->zip->archive)));
+		FileClose(file);
+		return 0;
+	}
+
+	mz_zip_archive_file_stat s;
+	if (!mz_zip_reader_file_stat(&file->zip->archive, file->zip->index, &s))
+	{
+		printf("FileOpenZip(mz_zip_reader_file_stat) Zip:%s, file:%s, error:%s\n",
+					zip_path, file_path,
+					mz_zip_get_error_string(mz_zip_get_last_error(&file->zip->archive)));
+		FileClose(file);
+		return 0;
+	}
+	file->size = s.m_uncomp_size;
+
+	file->zip->iter = mz_zip_reader_extract_iter_new(&file->zip->archive, file->zip->index, 0);
+	if (!file->zip->iter)
+	{
+		printf("FileOpenZip(mz_zip_reader_extract_iter_new) Zip:%s, file:%s, error:%s\n",
+					zip_path, file_path,
+					mz_zip_get_error_string(mz_zip_get_last_error(&file->zip->archive)));
+		FileClose(file);
+		return 0;
+	}
+
+	file->zip->offset = 0;
+	file->offset = 0;
+	file->mode = O_RDONLY;
 	return 1;
 }
 
diff --git a/file_io.h b/file_io.h
index 443a49e..853d036 100644
--- a/file_io.h
+++ b/file_io.h
@@ -59,7 +59,7 @@ int  getStorage(int from_setting);
 void setStorage(int dev);
 int  isUSBMounted();
 
-int FileOpenZip(fileTYPE *file, const char *name, uint32_t crc32, int mode, char mute = 0);
+int  FileOpenZip(fileTYPE *file, const char *name, uint32_t crc32);
 int  FileOpenEx(fileTYPE *file, const char *name, int mode, char mute = 0);
 int  FileOpen(fileTYPE *file, const char *name, char mute = 0);
 void FileClose(fileTYPE *file);
diff --git a/support/arcade/romutils.cpp b/support/arcade/romutils.cpp
index dbd52a5..375006d 100644
--- a/support/arcade/romutils.cpp
+++ b/support/arcade/romutils.cpp
@@ -159,10 +159,9 @@ static int file_data(const uint8_t *buf, uint16_t chunk, struct MD5Context *md5c
 
 static int file_file(const char *name, uint32_t crc32, int start, int len, struct MD5Context *md5context)
 {
-	char mute = 0;
 	fileTYPE f = {};
 	static uint8_t buf[4096];
-	if (!FileOpenZip(&f, name, crc32, mute)) return 0;
+	if (!FileOpenZip(&f, name, crc32)) return 0;
 	if (start) FileSeek(&f, start, SEEK_SET);
 	unsigned long bytes2send = f.size;
 	if (len > 0 && len < (int)bytes2send) bytes2send = len;
@@ -385,7 +384,7 @@ static int xml_send_rom(XMLEvent evt, const XMLNode* node, SXML_CHAR* text, cons
 				}
 				if (!strcasecmp(node->attributes[i].name, "crc") && !strcasecmp(node->tag, "part"))
 				{
-					arc_info->crc = (uint32_t)strtoul(node->attributes[i].value, NULL, 16); 
+					arc_info->crc = (uint32_t)strtoul(node->attributes[i].value, NULL, 16);
 				}
 				if (!strcasecmp(node->attributes[i].name, "offset") && !strcasecmp(node->tag, "patch"))
 				{
@@ -583,13 +582,13 @@ static int xml_send_rom(XMLEvent evt, const XMLNode* node, SXML_CHAR* text, cons
 				} else {
 					strcpy(zipnames_list, arc_info->zipname);
 				}
-				
+
 				char *zipname = NULL;
 				char *zipptr = zipnames_list;
 				const char *root = get_arcade_root(0);
 				int result = 0;
 				while ((zipname = strsep(&zipptr, "|")) != NULL)
-				{	
+				{
 					sprintf(fname, (zipname[0] == '/') ? "%s%s/%s" : "%s/mame/%s/%s", root, zipname, arc_info->partname);
 
 					printf("file: %s, start=%d, len=%d\n", fname, start, length);