[Tuto] [EN/FR] Install/Installer nBoot + ControlX (+Linux)

[geekpersonman]

ControlX does decompress the Boot2 image in RAM, then patch it if it belongs to the supported images (the one with the best support being 4.0.3), then launch it.

We have the boot2 raw code right, and what language is it in?
Does Boot2 do anything that could not be rewritten/replicated by a potential homebrew replacement? (like special decryption/encyrption, os loading protocols that we cannot replicate)
If it doesn't, then would it be possible to replace Boot2 with a "better" piece of software that potentially is not as picky as the TI Boot2 regarding things such as OS version or CAS/num? (even though I know it would not pass a signaature check, could it potentially work with ControlX)

P.S. @parrotgeek1 Thank you for looking into it at all, I hope you get well soon (not just so you can fix this bug, but it certainly won't hurt if you do )

[critor]

We have the boot2 raw code right, and what language is it in?

ARM machine code.

Does Boot2 do anything that could not be rewritten/replicated by a potential homebrew replacement? (like special decryption/encyrption, os loading protocols that we cannot replicate)

Oh yes, the Boot2 has huge+complex code for supporting the proprietary filesystem, for supporting USB (to install OSes), for decrypting the OS to be launched...

[geekpersonman]

We have the boot2 raw code right, and what language is it in?

ARM machine code.

Not at all specific to the nspire, and how can I get it?

Does Boot2 do anything that could not be rewritten/replicated by a potential homebrew replacement? (like special decryption/encyrption, os loading protocols that we cannot replicate)

Oh yes, the Boot2 has huge+complex code for supporting the proprietary filesystem, for supporting USB (to install OSes), for decrypting the OS to be launched...

Would it be possible to steal (or "borrow" if you prefer) those parts if (I know this is a big if) we can completely understand the code?

[parrotgeek1]

We have the boot2 raw code right, and what language is it in?

ARM machine code.

Not at all specific to the nspire, and how can I get it?

Does Boot2 do anything that could not be rewritten/replicated by a potential homebrew replacement? (like special decryption/encyrption, os loading protocols that we cannot replicate)

Oh yes, the Boot2 has huge+complex code for supporting the proprietary filesystem, for supporting USB (to install OSes), for decrypting the OS to be launched...

Would it be possible to steal (or "borrow" if you prefer) those parts if (I know this is a big if) we can completely understand the code?

1) ida pro or hopper disassembler. you extract the code using imgmanip and then load it into ida with base address 0x11800000

2) effectively no, you'd have to be Einstein

P.S. I now know *why* tmpcnv reboots but I haven't figured out how to patch it yet

[nass93820]

"Réinstallez un OS compatible avec Ndless ainsi que Ndless 4.0 ou plus récent, en suivant une nouvelle fois le tutoriel en ligne."

on peut mettre l os 3.6 sur ti nspire cx ?

[critor]

Oui.

[nass93820]

lorsque j envoie l os cas 4.2.0 sur ma ti nspire cx sur le menue de la reinistialisation ca se redemarre et ca me demande une nouvelle fois de la reinstaller et c ame fait ca tt le temps

[critor]

Comme dit dans le tutoriel ( viewtopic.php?f=57&t=18920&start=160#p215458 ), tu dois faire reset à la fin du premier chargement de l'OS.
Sinon en effet, il se désinstalle.

[nass93820]

c est normal que quand j utilise limite dans calcul elle s eteint tt seul ?

[nass93820]

ou meme quand j utilise tt les autres choses du menu