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Page history last edited by Haruspex 12 years, 5 months ago

Note: This page is about the Firmware on your Wii and upgrading/downgrading it.  For hacking any Wii, please refer to the USB Loader page.


Which Firmware is on my Wii?


On the channels page of your Wii, in the lower-left corner, is the Wii Options button.  Click on it.  Now click on Wii Settings.  You will be presented with the Wii System Settings 1 page.  In the upper-right corner is the current Wii Firmware you are running. 


Which Firmware is most recommended?


At the moment, 4.1 is the most recommended firmware.  The least recommended is 4.3 followed by 4.2, please don't use them.  4.2 and 4.3 did not add any positive capabilities to the system, only tactics for hindering homebrew (all of the 4.2 tactics have been bypassed at this point using methods described on the USB Loader page, whereas 4.3 is still being worked on).


4.2 is the same as 4.1 except that 4.2 added anti-piracy features. There is ZERO advantage to a 4.2 upgrade.


4.3 is the same as 4.2 with the addition of IOS58 (which you can install safely via DOP-Mii) for USB camera support. 4.3 also added a slew of more successful anti-piracy features. There is ZERO advantage to a 4.3 upgrade.


Firmware 4.1 is the same as 4.0 with only one difference.  Firmware 4.1 includes a fix for a bug with Wii Sports Resort.  That's it.  There is no reason to be on 4.0 instead of 4.1.  The better choice is 4.1, hands down.


All firmware is fully hackable, with varying degrees of issues.  There is no need to remain on any firmware below 4.0.  If you are on a firmware below 4.0, then you are missing out on SDHC support and the ability to store games and channels and launch them from an SD(HC) card.


For more detailed information on the differences between firmware/System Menu versions, review the System Menu page on WiiBrew.


How do I upgrade/downgrade my Firmware to 4.1(J/U/E)?


It's super easy with DOP-Mii.  This is included in the WeHackWii Package.


If you have not yet installed the HomeBrew Channel, then you'll need to head over to the USB Loader page and learn how to hack your Wii. Once you are done with that guide, then come back here and follow the steps below to install the most recommended firmware 4.1 on your Wii system.


  1. Launch DOP-Mii from the HomeBrew Channel
  2. Press A to continue.
  3. Choose and IOS which works for you, such as IOS36 or IOS222
  4. Press A to continue.
  5. Select IOSs and press A
    1. Select IOS37
      1. press A to install the latest version
      2. press A to continue
      3. press A to apply Sig Hack Check
    2. Select IOS38
      1. press A to install the latest version
      2. press A to continue
      3. press A to apply Sig Hack Check
    3. Select IOS53
      1. press A to install the latest version
      2. press A to continue
      3. press A to apply Sig Hack Check
    4. Select IOS55
      1. press A to install the latest version
      2. press A to continue
      3. press A to apply Sig Hack Check
    5. Select IOS60 (Important: This must complete successfully before doing step 6)
      1. press A to install the latest version (Version 6400 of IOS60 is a stub, use the previous version)
      2. press A to continue
      3. press A to apply Sig Hack Check
  6. Select System Menu
    1. Select System Menu 4.1
    2. Select your region
    3. Press A to select
    4. Press A to continue
  7. You may now restart your Wii and enjoy 4.1


Is there an alternative upgrade/downgrade method?


Yes, you can use WAD Manager (which is included in the WeHackWii Package) to install the IOS37, IOS38, IOS60, BC, MIOS, and Wiisystemmenu (448 for NTSC-J, 449 for NTSC-U, or 450 for PAL) included with the WeHackWii Package. This will install 4.1, with the option for J/U/E up to you.


  1. In addition to the WeHackWii Package, you will need to download the 4.1 WAD Files
  2. Copy the following .wad files into the wad folder: 
  • IOS37-64-v3869.wad
  • IOS38-64-v3610.wad
  • IOS60-64-v6174.wad
  • RVL-bc-v5.wad
  • RVL-mios-v9.wad
  • One of the following:
    • For NTSC-J (e.g. Japan): RVL-WiiSystemmenu-v448.wad
    • For NTSC-U (e.g. North America): RVL-WiiSystemmenu-v449.wad
    • For PAL (e.g. Europe): RVL-WiiSystemmenu-v450.wad

Launch WAD Manager from the HomeBrew Channel Install the .wad files listed in step 1


You can then use AnyTitleDeleter DB (which is included in the WeHackWii Package) to uninstall IOS30 (used by System Menu 3.0-3.3), IOS50 (used by System Menu 3.4), or IOS70 (used by System Menu 4.2) if you wish, and use DOP-Mii (which is included in the WeHackWii Package) to install IOS53, IOS55, and re-insert the Trucha Bug into IOS60 if you want to launch WiiWare from the SD card. 


I'm on 4.3, is there anything I can do?


You can try using the Smash Stack or Indiana Pwns methods to launch DOP-Mii or WAD Manager and roll back according to the above methods. This may be risky and could brick you Wii, so we will not go into details at the moment. If you are competent enough to understand the first sentence of this paragraph and execute it yourself, please comment below about your experience. Otherwise, you should probably wait for more information and a more bullet-proof method.


Some people have had success with the Restore Your cIOS on 4.3 Wii guide. It follows the method mentioned in the above paragraph.

Here is a more detailed Indiana Pwns method guide: Wii Firmware 4.3 Downgrade _ Guide: Downgrade from 4.3 to 4.1.

There is also a 4.3 Virgin Softmod guide, but it is untested by the writers here.


Comments (Show all 161)

Haruspex said

at 11:19 am on Aug 5, 2010

@Shane, what are the errors?

@Daniel, technically yes, as DOP-Mii can let you change your System Menu to 4.2 (or earlier). I would recommend 4.1, as stated above. Just use DOP-Mii to ensure you have IOS 60 installed, and then install System Menu 4.1 via the instructions above.

Shane said

at 11:37 am on Aug 5, 2010

it says that "I Didn't Complete It" and i pressed A to do it and that was the error message that i recieved

Haruspex said

at 12:09 pm on Aug 6, 2010

That you didn't complete what? You pressed A to do what? What was the exact error message? I'm not following what you did or what you were trying to do. Can you step me through your process?

Shane said

at 12:21 pm on Aug 6, 2010

ok .. when it tells you to press A to install whatever it is your tryin to install with going it through Super Smash Bros Brawl it always say "I Didn't Complete It"
what im tryin to do is downgrade my Wii and i got Homebrew back Up & Going again and that only took a minute to get that back its just The Downgrading
Part im havin trouble with

Shane said

at 12:34 pm on Aug 6, 2010

i even tried to downgrade it through The WAD Manager and it didn't work cuz i don't know which ISO to use and when i try to use DOP-Mii it keeps freezing up on me

Haruspex said

at 12:19 pm on Aug 9, 2010

For 4.3, try following this guide:

It includes a 4.1 downgrade section that might help you.

Shane said

at 4:05 pm on Aug 10, 2010

ok thanks but everytime when i try to do it Through Super Smash Bros Brawl or either Homebrew .. everything is freezing on me like when i try to use DOP-Mii
my Wiimote turns off and when i would use my GC Controller theres alot of error codes and its weird DOP-Mii works for everyone and i can't never get it to work
for nothing and wish u would tell me what im doing wrong here cuz im going crazy

Shane said

at 3:27 pm on Aug 22, 2010

and also need to know Which Version of DOP-Mii is the best one to use

Shane said

at 12:50 pm on Aug 23, 2010

nevermind i got it back to 4.1U

Shane said

at 4:18 pm on Aug 23, 2010

but i do wants to ask u something .. i got a alot of dvd movies that i made myself u know burned i was jus wondering if there was a way to be able to play dvd movies that i burned

Shane said

at 11:13 am on Sep 1, 2010

i downgraded it back to 4.1U and when i did that i
been having problems with it since then .. when i would try to go my Wii
Settings it wont let into my settings and when i tried to play a game i downloaded
a few days it wouldn't let me play the game and i also tried to upgraded back to 4.2U
cuz when i was on 4.2U i never had any problems before but .. yes theres a but .. i upgraded it to 4.2U and after when i did that my wii stopped working completely and not understanding why

Shane said

at 3:29 pm on Sep 1, 2010

im guessing im not going to get any help am i ...

paulb said

at 8:47 pm on Aug 23, 2010

There sure is Shane
It's called WiiMC and it's here

Shane said

at 3:25 pm on Aug 24, 2010

i got that already and everytime would try to play a dvd movie that i made its like it wont read

paulb said

at 8:30 pm on Aug 24, 2010

Does it read original discs?

It sounds like one of the later model Wii's which cannot play DVD's
The other option would be to convert the movie into .avi or similar and run from HDD/Flash card

Shane said

at 9:24 pm on Aug 24, 2010

yeah cuz u just bought this one a few months ago .. u know the black wii

Shane said

at 9:24 pm on Aug 24, 2010

i meant i just bought this one a few months ago

Shane said

at 3:54 pm on Aug 29, 2010

ever since i downgraded it to 4.1U i been having problems .. everytime i would try to go to my Wii Settings it wont come up for some reason and why i don't know

Shane said

at 2:38 pm on Sep 8, 2010

i downgraded it back to 4.1U and when i did that i
been having problems with it since then .. when i would try to go my Wii
Settings it wont let into my settings and when i tried to play a game i downloaded
a few months ago it wouldn't let me play the game and i also tried to upgraded back to 4.2U
cuz when i was on 4.2U before i never had any problems Not Even Once So i upgraded it to 4.2U and after when i did that my wii stopped working completely and this is what i used ... 4.2U-RVL-WiiSystemmenu-v481.wad and what happen is that i tried to install IOS70-64-v6687 [Patched][FreeTheBug].wad with DOP-Mii and couldn't do it but it somehow let me
download 4.2u-RVL-WiiSystemmenu-v481 and after when i did that is when everything went dead and i need to know if theres any hope for me at all

paulb said

at 7:28 pm on Sep 8, 2010

Are you able to access the homebrew channel or DOP-Mii?

If so you should be able to un-install what sounds like a faulty or other region .wad

Shane said

at 8:27 pm on Sep 8, 2010

i can't get into anything thats just it ... when i turn my wii on its stuck on the black screen

paulb said

at 10:12 pm on Sep 8, 2010

Did you have priiloader or bootmii installed?

Shane said

at 9:39 am on Sep 9, 2010

priiloader no .. bootmii yes i got that installed

paulb said

at 8:21 pm on Sep 9, 2010

Did you make a NAND backup is the next question then.
If yes, you should be able to restore it using BootMii

Shane said

at 11:47 am on Sep 10, 2010

how do you make a nand backup and plus how can i do anything when i said before is that i can't get into my wii period

paulb said

at 9:47 pm on Sep 10, 2010

Hey Serb, where the hell you been :D

If you don't already have a NAND backup your pretty much screwed with a fully bricked Wii.
You should have made one when you first started modifying your Wii

Do you still have the BootMii files on your SD card, or backed up somewhere?
If BootMii is still installed and you have the files on your SD card it will automatically load up before the Wii OS does.
From there it "may" be possible to use a donor NAND to fix it, but I can't guarantee it

Shane said

at 12:56 pm on Sep 11, 2010

can you please send me the link for The Donor NAND cuz im not having any luck finding it please???

jay weldon said

at 9:02 am on Nov 2, 2010

Did you try to start the wii holding the reset button i think that is what brings it into bootmii.

Shane said

at 1:05 pm on Sep 18, 2010

i still have the files on my card but when i put the card in my wii and turn it on it still stays stuck on the black screen

paulb said

at 3:13 am on Sep 19, 2010

Um, wow
How do I put this.

It sounds very much like you have a fully bricked Wii
And if you can't access BootMii then your out of luck.

Shane said

at 8:10 pm on Sep 26, 2010

what about SaveMii .. does it work at all or what ...

jay weldon said

at 9:00 am on Nov 2, 2010

I have 4.3u and really thought when i updated that all was lost but then there was a post that i was able to rehack and i also did something called the "dark side" or something or something like that and now i can load super mario no problems and alot of other games that i could not load b4 i also do not have to load discs throug the loader they run through the disc channel its awesome. anyone have any questions i can find the thread for you to do it step by step i have to say its pretty cool.

paulb said

at 7:47 pm on Nov 2, 2010

@jay weldon
Sounds like DarkCorp.
That has pros and cons as it replaces almost every IOS with cIOS's (custom IOS's)
which to be honest isn't necessary. You only need to replace 2-3 IOS's at best to run homebrew etc.
On the other hand it is helpful for those who do not use HDD loading to be able to use the disc channel to load games.

There are already links on the front page to hack a 4.3 Wii, but if there is call for this we can include it here.

Thanks for the info though.

AndrewP said

at 10:20 pm on Dec 24, 2010

ok heres my problem i had a 2007 wii with 3.2 on it i uodated it with beatles rockband - Big mistake it bricked my wii so i sent it to nintendo a few months later and just got it back. it had the dvd drive replaced and i think the main board replaced, so i dont know if it is downgradable or not. as the information on my wii case is no longer valide.

paulb said

at 10:29 pm on Dec 24, 2010

What firmware is it at now buddy?
There are 4.3 hacks available now and I'm sure we can fix it up for you

AndrewP said

at 12:44 am on Dec 25, 2010

its 4.3u and i didnt notice when they sent me the wii back that it had the old serial number and the new one. but the thing is i dont have ssbb or the indiana jones game.

AndrewP said

at 12:48 am on Dec 25, 2010

o well i might just sell it or keep the other one we bought, i have 2 wii's now. one is 4.2u full homebrew ability and one with 4.3u, and what i want to know is how do i load burned games through the disk channel? if someone could point me in the right direction that would be awsome.

paulb said

at 1:08 am on Dec 25, 2010

AFAIK the only way to play backups via the disc channel is by installing Darkcorp
Have a look at the thread and see if it can help you out.

I would however advise that darkcorp is a complete IOS replacement mod, which in my opinion is unnecessary
as you only need to replace 2 IOS's in theory to run homebrew etc.
But if that's the only way you can get it going it may be a good option.

btw for smashstack or indianpwns you could take a trip to your local video store.

AndrewP said

at 3:19 am on Dec 26, 2010

thanks. ill probably install darkcorp on there and then burn a bunch off wii games and sell my 4.2 full ombrew compatible wii on craigslist or ebay.

Shane said

at 10:36 am on Jan 25, 2011

I Just Got A New Black Wii For Christmas And Got The Homebrew Channel Back And Did My Nand Backup As Well
But Couldn't Get BootMii As Boot2 I Had 2 Do It As Boot IOS And What I Want 2 Know If Theres A Way 2 Hack It
Without Having 2 Hooking It Up 2 The Internet .. Need An Answer ASAP Thanks

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