Bootrom

Restrictions

Min Addr: 0x18000000

Max Addr: 0x18024000

File Size Limit: 147,456 bytes

Purpose

Locate LLB (illb) in NOR and then read / parse / decrypt / etc / execute it. If this fails, it will default to DFU mode.

Low Level Bootloader (LLB)

Restrictions

Min Addr: 0x18000000

Max Addr: 0x19400000

File Size Limit: 1,310,720 bytes

Purpose

Locate iBoot (ibot) in NOR and then read / parse / decrypt / etc / execute it. If this fails, it will default to a pseudo-DFU mode. That is, it will be LLB that is running, but it will report itself as "Apple Mobile Device (DFU Mode)" like the real DFU Mode does. Besides the obvious difference of, well, not really being DFU mode, it is very similar but just has a bigger file size limit and allows the "setenv', "clearenv", and "getenv" commands to be sent to it.

iBoot

Restrictions

See this page for some more info

Min Addr: 0x8000000

Max Addr: 0xb000000

File Size Limit: 50,331,648 bytes (needs a lot of room for ramdisks and such, but does not go past 0xb000000 obviously since kernel is mapped there as well as devicetree in 0xbf00000 and so on and so forth)

Purpose

Very big and very complicated bootloader. Too many purposes to name at this time.

TODO - make summary / list of stuff iBoot does.

Comment by mbj1...@gmail.com, Dec 19, 2008

Would it be possible to change the bit values that send the iPod into fake-DFU mode and have it start up normally? Or would it take more bits to boot than fake-DFU takes up? OR would it near impossible to find the necessary bits?

Comment by project member will.chr...@gmail.com, Dec 21, 2008

Comment by matthew....@tesco.net, Dec 30, 2008

Is there any way to find some more technichal specs on the whole system ? Prob a stupid question but I got an Touch 2G for Xmas and I really want to jailbreak it but I have little knowledge of the Apple OS. Why cant it be done software side ? I mean altering the ipa files and stuff so they are installable through Itunes or whatever ? If these are stupid questions feel free shout at me :)

Comment by project member posixni...@gmail.com, Feb 8, 2009

to matthew....@tesco.net:

AHHHHHHHHHHHHHHHHHHHHH!!!!!!!!!!!!

Comment by tariet...@gmail.com, Oct 2, 2011

I have a Toshiba satellite C655 laptop Windows 7 Home Premium I can't start up my laptop even with my windows recovery disk please help fix I live in a nursing home age 49 l lost the ability to walk so I have to rely on the internet to see the world.I have no access to the internet through my laptop im emailing on my phone which is not as good as my laptop please show me how to fix much appreciated

Comment by tariet...@gmail.com, Oct 2, 2011

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