IOS History

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This page is intended to track changes in IOS ( the operating system that runs on Starlet) such as: added features, bug fixes, etc. It will also cover what different minor versions are known to exist.

Overview

The Title ID of the IOSes follow this convention "00000001-000000xx" where xx is the IOS number in hexadecimal. The "IOS number" is best thought of as a "Major" version number for the firmware, and probably corresponds to a specific version of Nintendo's (proprietary) SDK. For example, the version of the SDK used to compile Zelda: Twilight Princess probably was tailored to run on IOS9.

In general, IOSx0 is used for the system menu (IOS20, IOS30, IOS40, IOS50, IOS60, IOS70). IOSx1 seems to be used for Nintendo channels (e.g. IOS31, IOS51, IOS61).

Each IOS has a 16-bit version number in its TMD. This version number is seen in decimal form in the filenames of IOS WADs on update partition (e.g. "IOS9-64-v516.wad" for version 516 (decimal)). Converted to hex, that 516 becomes 0x0204, and can be read as "2.4" -- IOS9, version 2.4.

As a rule, an existing IOS will never have new features added to it, to protect binary compatibility. This means that any updates for existing IOSes are only meant to fix bugs (generally, security bugs).

Future of IOS

As of late 2008, Nintendo has been replacing some versions of IOS with small non-functional "place holder" IOSes. This is to prevent the reuse of the IOS "slot" for software other than official Nintendo Software which utilized that IOS number. Nintendo can come back at a later date if necessary and "reuse" an IOS slot at their own discretion by simply increasing the version number of the title and replacing it with a functional IOS once again. These IOSes have been marked as Mothballed on the table denoting that they could quite possibly be reused in the future if Nintendo decides to do so.

Version Table

IOS Number Minor(s) Version Number(s) Notes NUS Availability Status
IOS3 255.0 v65280 Non-functional "stub" Unavailable Mothballed
IOS4 0.3, 1.3, 255.0 v3, v259, v65280 Previous versions only had minimal drivers (lacking KD, WL, WD, SSL), and were probably used during manufacturing and/or updating. 1st Version Timestamp is Aug 10, 2006. Replaced by a stub. Version 3 was used by Prelaunch System Menu present on Pre-Launch Kiosk Wiis that shipped without a full System Menu. v65280 Mothballed
IOS9 0.1 2.4, 2.6, 2.8, 2.9, 4.10 v1, v516, v518, v520, v521, v778, v1034 Has only one LED pattern: blinking. First "normal" IOS version. Used by System Menu 1.0. Version 1 internal timestamp Aug 22 2006 13:46:28. v520, v521, v778, v1034 Active
IOS10 3.0 v768 First "stub" IOS. Origin of the shared contents used by all subsequent "stub / mothballed" ioses. v768 Mothballed
IOS11 0.10, v1.0 v10, v256 Internal timestamp says Nov 14 2006 16:26:01. Used by System Menu 2.0. v10, v256 Mothballed
IOS12 0.6, 0.11, 0.12, 1.13, 2.13 v6, v11, v12, v269, v525, v526 Earliest Known IOS: June 4, 2006. v6, v11, v12, v269, v525, v526 Active
IOS13 0.10, 0.15, 0.16, 1.11, 4.7 v10, v15, v16, v273, v1031, v1032 Used by the "All Regions" title of News, Weather & Photo 1.0 Channels v10, v15, v16, v273, v1031, v1032 Active
IOS14 1.1, 1.6, 1.7, 2.8, 4.7 v257, v262, v263, v520, v1031, v1032 v262, v263, v520, v1031, v1032 Active
IOS15 1.1, 1.2, 1.3, 1.4, 1.9, 1.10, 2.11, 4.7 v257, v258, v259, v260, v265, v266, v523, v1031, v1032 Contains NAND BOOT PROGRAM (AKA NANDloader) -- this was probably accidental v257, v258, v259, v260, v265, v266, v523, v1031, v1032 Active
IOS16 1.1, 2.0 v257, v512 Initially used for Wii Backup Disc. The version on the Wii Backup Disc was infamously used by pirates, until System Menu 4.0 mothballed this IOS as of v512. The mothballed stub version was retracted from the Korean SOAP server not long after its posting for unknown reasons. As of the System Menu 4.1 update for Korea, it is back. v512 Mothballed
IOS17 2.0, 2.5, 2.6, 4.7 v512, v517, v518, v775, v1031, v1032 v512, v517, v518, v775, v1031, v1032 Active
IOS20 0.12, 1.0 v12, v256 Feb 22 2007 04:25:59 Used by System Menu 2.2. v12, v256 Mothballed
IOS21 2.2, 2.5, 2.6, 2.7, 2.10, 2.13, 4.14 v514, v515, v516, v517, v522, v525, v782, v1038, v1039 Contains NAND BOOT PROGRAM. Most debugging messages are removed. Most common for third-party titles. v514, v515, v516, v517, v522, v525, v782, v1038, v1039 Active
IOS22 3.4, 3.9, 3.10, 4.13, 5.13 v772, v777, v780, v1037, v1293, v1294 v777, v780, v1037, v1293, v1294 Active
IOS28 5.8, 5.12, 5.13, 6.14, 7.14 v1288, v1292, v1293, v1550, v1806, v1807 Starting with IOS28, firmware is divided into 15 modules. Added some ioctls to /dev/es. v1292, v1293, v1550, v1806, v1807 Active
IOS30 4.13, 4.15, 4.16, 10.16, 11.0 v1037, v1039, v1040, v2576, v2816 Added USB Keyboard support. Used by many previous versions of the System Menu. v1037, v1039, v1040, v2576, v2816 Mothballed
IOS31 4.13, 4.15, 4.16, 10.16, 12.16, 12.20, 13.21, 14.23 v1037, v1039, v1040, v2576, v3088, v3092, v3349, v3607, v3608 Used by News/Weather/Photo 1.1 channel v1037, v1039, v1040, v2576, v3088, v3092, v3349, v3607, v3608 Active
IOS33 4.16, 11.14, 11.16, 12.19, 14.23 v1040, v2832, v2834, v3091, v3607, v3608 v1040, v2832, v2834, v3091, v3607, v3608 Active
IOS34 4.15, 12.15, 12.19, 13.20, 14.23 v1039, v3087, v3091, v3348, v3607, v3608 v1039, v3087, v3091, v3348, v3607, v3608 Active
IOS35 4.16, 12.16, 12.20, 13.21, 14.23 v1040, v3088, v3092, v3349, v3607, v3608 v1040, v3088, v3092, v3349, v3607, v3608 Active
IOS36 4.18, 12.18, 12.22, 13.23, 14.23 v1042, v3090, v3094, v3351, v3607, v3608 v1042, v3090, v3094, v3351, v3607, v3608 Active
IOS37 8.22, 14.25, 14.28, 22.30 v2070, v3609, v3612, v3869, v5662, v5663 First to fix the signature-checking function bug v2070, v3609, v3612, v3869, v5662, v5663 Active
IOS38 14.19, 14.20, 16.27 v3609, v3610, v3867, v4123, v4124 v3610, v3867, v4123, v4124 Active
IOS40 9.17, 11.19, 12.0 v2321, v2835, v3072 Present in Korean system. v3072 Mothballed
IOS41 9.16, 11.19, 12.19, 13.20, 14.22 v2320, v2835, v3091, v3348, v3606, v3607 Present in Korean system. v2835, v3091, v3348, v3606, v3607 Active
IOS43 9.16, 11.19, 12.19, 13.20, 14.22 v2320, v2835, v3091, v3348, v3606, v3607 Present in Korean system. v2835, v3091, v3348, v3606, v3607 Active
IOS45 9.16, 11.9, 12.19, 13.20, 14.22 v2320, v2835, v3091, v3348, v3606, v3607 Present in Korean system. v2835, v3091, v3348, v3606, v3607 Active
IOS46 9.18, 11.21, 12.21, 13.22, 14.22 v2322, v2837, v3093, v3350, v3606, v3607 Present in "Need for Speed Undercover" and in "Shin Chuukadaisen" Korean. v2837, v3093, v3350, v3606, v3607 Active
IOS48 16.27 v4123, v4124 Bundled with System Menu 4.3K provides the same features as IOS38 but has a newer SDI module and an FFSP vs FFS module. v4123, v4124 Active
IOS50 19.25, 20.0 v4889, v5120 Came with the November 17, 2008 update. Used by System Menu 3.4. v4889, v5120 Mothballed
IOS51 18.25, 19.0 v4633, v4864 Used by a previous Shop Channel. Released at same time as fixes to remaining fakesigning bugs. v4633, v4864 Mothballed
IOS52 22.29, 23.0 v5661, v5888 Included with and used by System Menu 3.5 for Korean Wiis. v5661, v5888 Mothballed
IOS53 16.17, 20.29, 21.30, 22.30 v4113, v5149, v5406, v5662, v5663 v4113, v5149, v5406, v5662, v5663 Active
IOS55 18.25, 20.29, 21.30, 22.30, 22.31 v4633, v5149, v5406, v5662, v5663 Seems to have changes in the DI Module. v4633, v5149, v5406, v5662, v5663 Active
IOS56 19.26, 20.26, 21.29, 22.29 v4890, v5146, v5405, v5661, v5662 Used by the Wii Speak Channel 2.0 and some games. Used by the Wii Shop Channel update as of Sept. 7, 2010. v4890, v5405, v5661, v5662 Active
IOS57 21.28, 21.51, 22.29, 23.30 v5404, v5661, v5918, v5919 Contains new or updated modules "OHCI0 USB USB_HID USB_HUB USB_MSC USB_VEN ETH" v5404, v5661, v5918, v5919 Active
IOS58 23.30, 24.31 v5918, v6175, v6176 Comes with the game "Your Shape" to allow the USB camera to work. v6175, v6176 Active
IOS59 v6688, v7207, v8737, v9249 v8737, v9249 Active
IOS60 24.30, 25.0 v6174, v6400 Used by System Menu 4.0 and System Menu 4.1 v6174, v6400 Mothballed
IOS61 19.26, 21.29, 22.29 v4890, v5405, v5661, v5662 Used by the Wii Shop Channel update that came with System Menu 4.0, 4.1 and 4.2 Also used by Photo Channel 1.1 v3+ v4890, v5405, v5661, v5662 Active
IOS62 25.30 v6430 Currently unused. v6430 Active
IOS70 26.31, 27.00 v6687, v6912 Used by System Menu 4.2 v6687, v6912 Mothballed
IOS80 27.31, 27.32 v6943, v6944 Used by System Menu 4.3 v6943, v6944 Active
IOS222 255.0 v65280 Piracy prevention. v65280 Preventative
IOS223 255.0 v65280 Piracy prevention. v65280 Preventative
IOS249 255.0 v65280 Piracy prevention. v65280 Preventative
IOS250 255.0 v65280 Piracy prevention. v65280 Preventative
IOS254 0.2, 0.3, 1.04, 255.0 v2, v3, v260, v65280 Distributed along with all System Menus since System Menu 3.4 as a quick fix for PatchMii. It's just a copy of IOS9. As Nintendo releases new versions of IOS9 this title will also receive updates.-ex IOS9 v521 corresponds to v3 of IOS254. v2, v3, v260, v65280 Preventative
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