The inevitable Secure Boot thread

trter10-imore

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Nov 24, 2011
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So guys, what's with the secure boot?

Can't flash recovery or boot, and I'm assuming this is why.

Does anybody have any ideas on how to disable it/work around it, or even what it is?

Thanks!
 

2defmouze

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Jul 9, 2011
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Right but it worries me that one can't be fully flashed like usual

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Course it can.. You probably need to just delete or rename the recovery-from-boot.p file from /system before you can flash a custom recovery permanently, that's how it is on ICS and other JB versions.

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trter10-imore

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Nov 24, 2011
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Course it can.. You probably need to just delete or rename the recovery-from-boot.p file from /system before you can flash a custom recovery permanently, that's how it is on ICS and other JB versions.

Sent from my Galaxy Nexus using Tapatalk 2

Oh! Thanks for clearing that up :)

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2defmouze

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@trter10 -- Hey, have you found out any more info on this secure boot thing? Lol I have to admit I'm getting a little bit confused by it.. it's seemingly giving kernel and recovery developers some head-scratching too as they try and get custom kernels to flash properly on this thing. Think I originally misunderstood what the deal was and now having trouble finding solid info... appreciate any light you can shed :)
 

trter10-imore

ThunderboltTool Developer
Nov 24, 2011
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@trter10 -- Hey, have you found out any more info on this secure boot thing? Lol I have to admit I'm getting a little bit confused by it.. it's seemingly giving kernel and recovery developers some head-scratching too as they try and get custom kernels to flash properly on this thing. Think I originally misunderstood what the deal was and now having trouble finding solid info... appreciate any light you can shed :)

No idea :p
It seems like almost a checksum verifier since it lets the stock boot be flashed and it boots afterwards, but fails on a modified boot image that will boot from Fastboot boot boot.img... but I saw a dev on XDA get a custom kernel booting but I'm not sure if he used Fastboot or recovery to flash.
It may also just be a signature checker since I think the guy on XDA built from source and modified the source directly, and compiling added a signature whereas just splitting, editing, and recompiling does not.

I've never had a nexus before last week and ive never had a successful attempt at building a kernel (ignoring integrated kernel building in CM9) so I'm just as lost as everyone else.

OK my thumbs hurt now I'm going to stop ;)

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