diff --git a/src/mame/mame.lst b/src/mame/mame.lst
index 8d261119eb0..c16b5ce3c82 100644
--- a/src/mame/mame.lst
+++ b/src/mame/mame.lst
@@ -38638,6 +38638,7 @@ mj3d                            // 2005.12 Sega Network Taisen Mahjong MJ 3 (Rev
 mj3evo                          // 2007.06 Sega Network Taisen Mahjong MJ 3 Evolution (Rev B)
 mj3evoa                         // 2007.02 Sega Network Taisen Mahjong MJ 3 Evolution (Rev A)
 mj3evoup                        // 2006.12 Sega Network Taisen Mahjong MJ 3 Evolution Firmware Update (GDX-0023)
+mj3up                           // 2005.09 Sega Network Taisen Mahjong MJ 3 Firmware Update (GDX-0019)
 ollie                           // 2004.03 Ollie King
 outr2                           // 2003.12 Outrun 2 (Rev A)
 outr2stjo                       // 2004.09 Outrun 2 Special Tours (Japan)
diff --git a/src/mame/sega/chihiro.cpp b/src/mame/sega/chihiro.cpp
index 1dc0df3ed6c..0107649192b 100644
--- a/src/mame/sega/chihiro.cpp
+++ b/src/mame/sega/chihiro.cpp
@@ -61,7 +61,7 @@ GD build date
 |*| 2006     | Sega Network Taisen Mahjong MJ 3 (Rev F)             | Sega                     | GDROM  | GDX-0017F  | 317-0414-JPN |
 | | 2005     | Sega Club Golf 2006: Next Tours                      | Sega                     | GDROM  | GDX-0018   |              |
 |*| 20051107 | Sega Club Golf 2006: Next Tours (Rev A)              | Sega                     | GDROM  | GDX-0018A  | 317-0428-JPN |
-| | 2005     | Firmware Update For MJ 3                             | Sega                     | GDROM  | GDX-0019   |              |
+|*| 20050905 | Firmware Update For MJ 3                             | Sega                     | GDROM  | GDX-0019   | 317-0414-JPN |
 | | 200?     | Sega Club Golf 2006                                  | Sega                     | GDROM  | GDX-0020   |              |
 | | 2006     | Sega Network Taisen Mahjong MJ 3 Evolution           | Sega                     | GDROM  | GDX-0021   | 317-0457-JPN |
 |*| 20070217 | Sega Network Taisen Mahjong MJ 3 Evolution (Rev A)   | Sega                     | GDROM  | GDX-0021A  | 317-0457-JPN |
@@ -2350,6 +2350,16 @@ ROM_START( mj3 )
 	ROM_LOAD( "317-0414-jpn.pic", 0x000000, 0x004000, CRC(27d1c541) SHA1(c85a8229dd769af02ab43c97f09f995743cdb315) )
 ROM_END
 
+ROM_START( mj3up )
+	CHIHIRO_BIOS
+
+	DISK_REGION( "gdrom" )
+	DISK_IMAGE_READONLY( "gdx-0019", 0, SHA1(39ac33e857a6f66814c8fc5487705dbf43d47888) )
+
+	ROM_REGION( 0x4000, "pic", ROMREGION_ERASEFF)
+	ROM_LOAD( "317-0414-jpn.pic", 0x000000, 0x004000, CRC(27d1c541) SHA1(c85a8229dd769af02ab43c97f09f995743cdb315) )
+ROM_END
+
 ROM_START( scg06nt )
 	CHIHIRO_BIOS
 
@@ -2633,7 +2643,7 @@ ROM_END
 /* 0017F */ GAME( 2006, mj3,      chihiro,  chihirogd,    chihiro, chihiro_state, empty_init, ROT0, "Sega",                     "Sega Network Taisen Mahjong MJ 3 (Rev F) (GDX-0017F)", MACHINE_NO_SOUND|MACHINE_NOT_WORKING )
 // 0018     GAME( 2005, scg06nto, scg06nt,  chihirogd,    chihiro, chihiro_state, empty_init, ROT0, "Sega",                     "Sega Club Golf 2006 Next Tours (GDX-0018)", MACHINE_NO_SOUND|MACHINE_NOT_WORKING )
 /* 0018A */ GAME( 2005, scg06nt,  chihiro,  chihirogd,    chihiro, chihiro_state, empty_init, ROT0, "Sega",                     "Sega Club Golf 2006 Next Tours (Rev A) (GDX-0018A)", MACHINE_NO_SOUND|MACHINE_NOT_WORKING )
-// 0019  Firmware Update For MJ 3
+/* 0019  */ GAME( 2005, mj3up,    chihiro,  chihirogd,    chihiro, chihiro_state, empty_init, ROT0, "Sega",                     "Sega Network Taisen Mahjong MJ 3 Firmware Update (GDX-0019)", MACHINE_NO_SOUND|MACHINE_NOT_WORKING )
 // 0020  Sega Golf Club 2006
 // 0021     GAME( 2006, mj3evoo,  mj3evo,    chihirogd,   chihiro, chihiro_state, empty_init, ROT0, "Sega",                     "Sega Network Taisen Mahjong MJ 3 Evolution (GDX-0021)", MACHINE_NO_SOUND|MACHINE_NOT_WORKING )
 /* 0021A */ GAME( 2007, mj3evoa,  mj3evo,    chihirogd,   chihiro, chihiro_state, empty_init, ROT0, "Sega",                     "Sega Network Taisen Mahjong MJ 3 Evolution (Rev A) (GDX-0021A)", MACHINE_NO_SOUND|MACHINE_NOT_WORKING )