WiiBrew:April Fools 2021 (4.4)

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April Fools 2021 (4.4) update
Date history
Build dateJanuary-April 2021
Release dateUSA Flag.png April 1, 2021

JAP Flag.png April 1, 2021

EUR Flag.png April 1, 2021

KOR Flag.png April 1, 2021
System Menu IOSIOS90]]
CDN-updated IOSIOS80, IOS249, IOS250
Version History
Preceded by4.3
vWii 1.0.0|4.3]]
vWii 1.0.0]]

4.4 is the latest Wii update, released in 2021. It has not fixed any major security flaws, instead preventing a certain set of title ids from loading. Priiloader is currently being uploaded to unblock these titles.

Currently, this update has bricked every Korean region Wii with Error 003. Disassembly of the System Menu suggests that Nintendo is bricking on the presence of the Korean key, as in other regions, not the absence. This can be worked around by removing the Korean key with KoreanKii before updating.

boot2 was also updated to v65280 here to erase BootMii. It is recommended to not update due to ES_ImportBoot being buggy, but if you plan on sending your Wii in to Nintendo, use UpdateMii by failoverfl0w.

Documents leaked in June 2021 suggest that Nintendo plans on allowing other developers to get their games blacklisted if they wish.

Affected homebrew

Affected Effect Workaround
Bluebomb Doesn't work in several games Use a different game.
TwizzerLoad Cannot load blocked titles Wait for update
Homebrew Channel Deleted Use title OHBC instead of LULZ
BootMii-boot2 Deleted Reinstall with version 65535.

Blocked Disc IDs

  • SMNE01 (New Super Mario Bros. Wii)
  • RMCE01 (Mario Kart Wii)
  • SVME01 (Super Mario All-Stars Limited Edition)
  • R8PE01 (Super Paper Mario)
  • RMGE01 (Super Mario Galaxy)
  • SB4E01 (Super Mario Galaxy 2)
  • RM8E01 (Mario Party 8)
  • RMKE01 (Mario Sports Mix)
  • G4QE01 (Super Mario Strikers)
  • R4QE01 (Mario Strikers Charged)

Patched Disc IDs

  • RSBE01 (Super Smash Bros. Brawl) - Fixed Bluebomb and removed Mario
  • ST7E01 (Fortune Street) - Fixed Bluebomb and removed Mario
  • AURE01 (Mario and Sonic at the Winter Olympic Games) - Fixed Bluebomb and made it Sonic-only.

Deleted channels

  • LULZ (Homebrew Channel, OHBC still works)
  • RMCx (Mario Kart Channel)
  • FAGx (Super Mario Bros.)
  • FB2x (Super Mario Bros. Lost Levels)
  • FBYx (Super Mario Bros. 2)
  • FCWx (Super Mario Bros. 3)
  • FAFx (Mario Bros.)
  • FAAx (Donkey Kong)
  • FABx (Donkey Kong Jr.)
  • JAAx (Super Mario World)
  • JABx (Mario's Super Picross)
  • JCBx (Super Mario RPG: Legend of the Seven Stars)
  • JCWx (Super Mario Kart)
  • NAAx (Super Mario 64)
  • NABx (Mario Kart 64)
  • NAEx (Paper Mario 64)
  • NATx (Mario Tennis)
  • NAUx (Mario Golf)
  • NAZx (Mario Party 2)
  • WDMx (Dr. Mario Online Rx)
  • WDPx (Dr. Mario Online Rx: Friend Battle Demo)

Official changelog

North America

Further improvements to overall system stability and other minor adjustments have been made to enhance the user experience.


United Kingdom

As a part of Nintendo's effort to care for it's customers, you will have a free cup of tea shipped directly to your house.


An alle deutschen Kostümbildner: Geht nach draußen.


Maginot Line.


Your country no longer exists.


South Korea

Because unauthorized firmware may impact system stability, the 4.4 update will refuse to boot if an unauthorized firmware is installed.