Difference between revisions of "Boot2"
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Hallowizer (talk | contribs) (Mentioned where boot2 lives, and added a couple of changelog things.) |
Hallowizer (talk | contribs) (Explained how updating works, although I'm basing this off of what I saw in marcan's update downloader.) |
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'''boot2''' is the [[Wii]]'s third-stage bootloader. It is responsible for loading the [[System Menu]] [[TMD]] and loading the appropriate [[IOS]]. | '''boot2''' is the [[Wii]]'s third-stage bootloader. It is responsible for loading the [[System Menu]] [[TMD]] and loading the appropriate [[IOS]]. | ||
| − | There are two copies of boot2 housed in [[Hardware/NAND|NAND]] blocks 1-7 in case of failure, loaded by [[boot1]]. Additionally, a copy of boot2 exists as title 1-1 in the NAND filesystem. | + | There are two copies of boot2 housed in [[Hardware/NAND|NAND]] blocks 1-7 in case of failure, loaded by [[boot1]]. Additionally, a copy of boot2 exists as title 1-1 in the NAND filesystem. |
| + | |||
| + | boot2 was updated in the [[System Menu 4.2|4.2 update]] to [[boot2v4]], the only time Nintendo has ever pushed a boot2 update. This was done by installing boot2 as title 1-1{{Check}}, then calling ES_ImportBoot to install it into the boot2 region of the NAND. Unfortunately, Nintendo did not test ES_ImportBoot very well, which led to many Wiis receiving a [[Brick#Low-level brick|low-level brick]], even if they were previously unmodded. | ||
== Version history == | == Version history == | ||
Revision as of 01:16, 26 April 2021
| This article is a stub. You can help WiiBrew by expanding it. |
boot2 is the Wii's third-stage bootloader. It is responsible for loading the System Menu TMD and loading the appropriate IOS.
There are two copies of boot2 housed in NAND blocks 1-7 in case of failure, loaded by boot1. Additionally, a copy of boot2 exists as title 1-1 in the NAND filesystem.
boot2 was updated in the 4.2 update to boot2v4, the only time Nintendo has ever pushed a boot2 update. This was done by installing boot2 as title 1-1[check], then calling ES_ImportBoot to install it into the boot2 region of the NAND. Unfortunately, Nintendo did not test ES_ImportBoot very well, which led to many Wiis receiving a low-level brick, even if they were previously unmodded.
Version history
| Version | Description |
|---|---|
| v1 | Present on Prelaunch consoles. |
| v2 | Present on launch-day Wii's. |
| v3 | Only found in Wiis released before LU64+ that were not updated to 4.2. Fixes the signing bug in the unused signature check code, and supports the next Hollywood revision. |
| v4 | Packaged in the 4.2 update to erase BootMii as boot2. Also found preinstalled in LU64+ Wiis. Contains a different layout to break the HackMii Installer. |
| v5 | Only found on Arabian Wiis, certain RVL-101 Wiis and the Wii Mini. |