diff --git a/CMakeLists.txt b/CMakeLists.txt
index d78b82e2c..9c53a521f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -978,8 +978,8 @@ cmrc_add_resources(flycast-resources
 		resources/flash/wldkicksj.nvmem.zip	# free play
 		resources/flash/wldkicksu.nvmem.zip	# free play
 		resources/flash/f355.nvmem.zip		# printer on
-		resources/flash/f355twin.nvmem.zip
-		resources/flash/f355twn2.nvmem.zip
+		resources/flash/f355twin.nvmem.zip	# printer on
+		resources/flash/f355twn2.nvmem.zip	# printer on
 		resources/flash/dirtypig.nvmem.zip	# 4 players
 		resources/flash/dirtypig.nvmem2.zip
 		resources/flash/vf4.nvmem.zip		# card all day, stage select
diff --git a/core/hw/naomi/naomi_cart.cpp b/core/hw/naomi/naomi_cart.cpp
index 7de7a6afa..8333856cd 100644
--- a/core/hw/naomi/naomi_cart.cpp
+++ b/core/hw/naomi/naomi_cart.cpp
@@ -681,7 +681,7 @@ void naomi_cart_LoadRom(const std::string& path, const std::string& fileName, Lo
 		}
 		if (gameId == " TOUCH DE UNOH -------------"
 			|| gameId == " TOUCH DE UNOH 2 -----------"
-			|| gameId == "F355 CHALLENGE JAPAN")
+			|| (gameId == "F355 CHALLENGE JAPAN" && config::MultiboardSlaves == 2))
 		{
 			printer::init();
 		}
diff --git a/resources/flash/f355twin.nvmem.zip b/resources/flash/f355twin.nvmem.zip
index 939399002..fb90cc14c 100644
Binary files a/resources/flash/f355twin.nvmem.zip and b/resources/flash/f355twin.nvmem.zip differ
diff --git a/resources/flash/f355twn2.nvmem.zip b/resources/flash/f355twn2.nvmem.zip
index 6816edc24..ef1d8bba0 100644
Binary files a/resources/flash/f355twn2.nvmem.zip and b/resources/flash/f355twn2.nvmem.zip differ