Attend XDA's Second Annual Developer Conference, XDA:DevCon 2014!
5,729,823 Members 51,248 Now Online
XDA Developers Android and Mobile Development Forum

[Q] Latest bootloader hacking

Tip us?
 
krystianp
Old
#1  
krystianp's Avatar
Senior Member - OP
Thanks Meter 11597
Posts: 649
Join Date: May 2012
Location: Rzeszow

 
DONATE TO ME
Default [Q] Latest bootloader hacking

I became owner of RAZR HD recently, unfortunatelly locked with latest firmware. I have some basic knowledge in reverse engineering and kernel development, so I decided to look into Dan Rosenberg's work. My question is are there any devs/hobbists who played with it? I tried to contact Dan but he's not responding, so I guess I'm all alone with it, am I? I'm especially interested in smc command handling. Any insight would be greatly appreciated.

Regards,
Krystian
The Following User Says Thank You to krystianp For This Useful Post: [ Click to Expand ]
 
Playb3yond
Old
#2  
Senior Member
Thanks Meter 6
Posts: 112
Join Date: Dec 2012
Quote:
Originally Posted by krystianp View Post
I became owner of RAZR HD recently, unfortunatelly locked with latest firmware. I have some basic knowledge in reverse engineering and kernel development, so I decided to look into Dan Rosenberg's work. My question is are there any devs/hobbists who played with it? I tried to contact Dan but he's not responding, so I guess I'm all alone with it, am I? I'm especially interested in smc command handling. Any insight would be greatly appreciated.

Regards,
Krystian
No one is wanting to go back into unlocking another bootloader, rather you should try looking into downgrading the trustzone (tz) partition to the unlockable version. That would be greatly appreciated.
 
krystianp
Old
#3  
krystianp's Avatar
Senior Member - OP
Thanks Meter 11597
Posts: 649
Join Date: May 2012
Location: Rzeszow

 
DONATE TO ME
Quote:
Originally Posted by Playb3yond View Post
No one is wanting to go back into unlocking another bootloader, rather you should try looking into downgrading the trustzone (tz) partition to the unlockable version. That would be greatly appreciated.
You might not want to go back but I do want to go back into unlocking another bootloader. Why do you think downgrading trustzone partition would be easier than exploiting bootloader?
The Following User Says Thank You to krystianp For This Useful Post: [ Click to Expand ]
 
progrockguy
Old
#4  
Senior Member
Thanks Meter 198
Posts: 140
Join Date: Feb 2013
Quote:
Originally Posted by krystianp View Post
You might not want to go back but I do want to go back into unlocking another bootloader. Why do you think downgrading trustzone partition would be easier than exploiting bootloader?
kexec might be easier than finding another qcom exploit to unlock the bootloader. Hashcode was giving it a shot, but without uart he was working blind and then Dan's exploit changed everything.

Beware of downgrading since you're locked. I remember a few bricking on the Atrix hd.
 
iBolski
Old
#5  
iBolski's Avatar
Senior Member
Thanks Meter 404
Posts: 1,202
Join Date: Nov 2010
Location: Columbus
Quote:
Originally Posted by krystianp View Post
You might not want to go back but I do want to go back into unlocking another bootloader. Why do you think downgrading trustzone partition would be easier than exploiting bootloader?
The problem is, Dan's work was finding an exploit. Pure and simple. it was not meant to happen, but he found a way to make it happen. Once Moto knew of this, they put out a patch so that anyone in the future who hadn't unlocked their bootloader would never be able to again. That exploit was a million in one chance of being there. It's not like he cracked the encryption key. That's an even more impossible feat.

No developer is going to put their time and effort into an old phone like the RAZR HD.

Kexec would be nice (using Safestrap recovery like on the RAZR and RAZR MAXX XT912 phones), but even that takes time to figure out how to make it work. I doubt people are willing to put much time and effort into this what with all the new phones that have been released since the HD was released.
Please hit "Thanks" if this post helped you.

RAZR HD XT926 (unlocked)
32gb Nexus 7
Chromecast
The Following User Says Thank You to iBolski For This Useful Post: [ Click to Expand ]
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes