[Q] Disabling "Secure Boot" not to be confused with "Unlocking Bootloader"

[(dylanger)]

[Q] Disabling "Secure Boot" not to be confused with "Unlocking Bootloader"

Hey Guys,

Has anyone successfully disabled "Secure Boot" on a Nexus 5 hammerhead?

Here is a picture of what I am trying to achieve:

I need to change a few things in ABOOT (Android BootLoader)/LittleKernel

Cheers guys

 

[(dylanger)]

Surely someone knows how the Secondary Bootloader works?

Perhaps I'm asking the wrong question, would it be possible to modify the Boot ROM containing the keys for each partition?

As the chain starts at the Boot ROM, would it be possible to modify this?

 

[RusherDude]

@(dylanger) did you manage to achieve this?

I guess that the only way to disable the trust boot chain (secure boot) is with the new "fastboot flashing unlock_critical" on the newer Nexus than N5, or you got it somehow?

 

[santi1993]

Hi, what about that?

Is from this chinese board: http://bbs.gfan.com/android-7753460-1-1.html

So... its possible, but how?

 

[santi1993]

Hey Guys,

Has anyone successfully disabled "Secure Boot" on a Nexus 5 hammerhead?

Here is a picture of what I am trying to achieve:


I need to change a few things in ABOOT (Android BootLoader)/LittleKernel

Cheers guys

Yes, it can be disabled and you can boot from anywhere you want, including OTG, but no one achieved how in this forum, in a chinese forum there was a hammerhead with secure boot disabled.

 

[(dylanger)]

I'd assume someone's gotten their hands on an engineering hammerhead device.

 

[manit77]

here's our answer.

Qualcomm chips and security for OEMs

If you’re familiar with programmable read-only memory (PROM) or one-time programmable non-volatile memory (OTP NVM) then understanding the concept of qfusing on Qualcomm MSM chips should be trivial. For those who are not familiar, briefly speaking, Qualcomm uses OTP NVM for their security...

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