Wii Info

Main Firmware - NAND (Bottom)
Second Firmware - IPL (RVL-RTC chip)
Embedded Bios - Bios (Broadway or Hollywood)
Above info obtained from joat in the wiidev channel

NAND modifications have been preformed before on the PSP (More info: http://undilutedplatinum.com)

Firmware can be updated by Nintendo via WiFi (Current Firmware is 2.0U)
User agent used when accessing update via HTTP/HTTPS: "wii libnup/1.0"
Wii Updates are signed and encrypted
1st Packet dump of when the Wii requires an update
2nd Packet dump of when the Wii requires an update
XML/SOAP Request/Responses during 1st update packet:
Code:
* SOAP SERVER ADDRESS:
http://nus.shop.wii.com:80/nus/services/NetUpdateSOAP

* SOAPaction:
urn:nus.wsapi.broadon.com/GetSystemUpdate

* MESSAGE:
<?xml version="1.0" encoding="UTF-8"?>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<soapenv:Body>
<GetSystemUpdateRequest xmlns="urn:nus.wsapi.broadon.com">
<Version>1.0</Version>
<MessageId>13198105123219138</MessageId>
<DeviceId>4362227772</DeviceId>
<RegionId>USA</RegionId>
<CountryCode>US</CountryCode>
<TitleVersion>
<TitleId>0000000100000001</TitleId>
<Version>2</Version>
</TitleVersion>
<TitleVersion>
<TitleId>0000000100000002</TitleId>
<Version>33</Version>
</TitleVersion>
<TitleVersion>
<TitleId>0000000100000009</TitleId>
<Version>516</Version>
</TitleVersion>
<Attribute>1</Attribute>
<AuditData></AuditData>
</GetSystemUpdateRequest>
</soapenv:Body>
</soapenv:Envelope>

* REPONSE:
<?xml version="1.0" encoding="utf-8"?>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<soapenv:Body>
<GetSystemUpdateResponse xmlns="urn:nus.wsapi.broadon.com">
<Version>1.0</Version>
<DeviceId>4362227772</DeviceId>
<MessageId>13198105123219138</MessageId>
<TimeStamp>1163966359696</TimeStamp>
<ErrorCode>0</ErrorCode>
<ContentPrefixURL>http://nus.cdn.shop.wii.com/ccs/download</ContentPrefixURL>
<UncachedContentPrefixURL>http://ccs.shop.wii.com/ccs/download</UncachedContentPrefixURL>
<TitleVersion><TitleId>0000000100000002</TitleId>
<Version>97</Version>
<FsSize>21839872</FsSize>
</TitleVersion><TitleVersion>
<TitleId>000000010000000B</TitleId>
<Version>10</Version>
<FsSize>1654784</FsSize>
</TitleVersion>
<TitleVersion>
<TitleId>000000010000000C</TitleId>
<Version>6</Version>
<FsSize>1654784</FsSize>
</TitleVersion>
<TitleVersion>
<TitleId>000000010000000D</TitleId>
<Version>10</Version>
<FsSize>1654784</FsSize>
</TitleVersion>
<TitleVersion>
<TitleId>0000000100000100</TitleId>
<Version>2</Version>
<FsSize>65536</FsSize>
</TitleVersion>
<TitleVersion>
<TitleId>0000000100000101</TitleId>
<Version>4</Version>
<FsSize>229376</FsSize>
</TitleVersion>
<UploadAuditData>1</UploadAuditData>
</GetSystemUpdateResponse>
</soapenv:Body>
</soapenv:Envelope>

* UNFILTERED:
1.043622277721319810512321913811641804558190http://nus.cdn.shop.wii.com/ccs/downloadhttp://ccs.shop.wii.com/ccs/download00000001000000029721839872000000010000000B101654784000000010000000C61654784000000010000000D1016547840000000100000100265536000000010000010142293760

* FIXED:
Verision:        1.0
DeviceID:        4362227772
MessageID:       13198105123219138
TimeStamp:       1163966359696
ErrorCode:       0
DownloadURL:     http://nus.cdn.shop.wii.com/ccs/download    (Cached)
DownloadURL:     http://ccs.shop.wii.com/ccs/download        (Uncached)

0000000100000002/tmd.97        Filesize: 21839872
000000010000000B/tmd.10        Filesize: 1654784
000000010000000C/tmd.6        Filesize: 1654784
000000010000000D/tmd.10        Filesize: 1654784
0000000100000100/tmd.2        Filesize: 65536
0000000100000101/tmd.4        Filesize: 2293760
Boot = Bios -> RTC -> NAND
Above line of info obtained from joat on the wiidev channel

Software on the CPU performs Signature Hash Checks

Devkit = $2000 (Developers have no information about security, nor do devkits)


I found alot of this information on http://mozy.org/wii/ and in the IRC efnet channel #wiidev

Tell me what you guys think