Former Writer · Jul 19, 2012 at 07:30 pm

Update on the Verizon Galaxy S III Quest for Unlocked Bootloader

A couple of days ago, XDA Elite Recognized Developer AdamOutler wrote an article explaining locked bootloaders and what they mean for Verizon Samsung Galaxy S III owners. Even if you don’t own a Verizon Galaxy S III, it’s worth a read.

So now we know why we hate locked bootloaders, but the real question on everyone’s mind is how much progress the devs have made in this regard. AdamOutler is heading up the movement with a thread dedicated to unlocking the device’s bootloader. How dedicated? The thread is heavily moderated so no one—not even AdamOutler himself—can post any shenanigans.

Rules:
Do not post in here unless you have something constructive to say. “Thanks”, “Hey this is wonderful”, and any other comments like that are not wanted. They take up space and make it more difficult to find information. I’m requesting that this thread be heavily moderated. In order to work efficiently, information density must be kept high. We are all guilty of adding in a few off-topic sentances from time-to-time, but this thread is strictly business and I expect the moderators to moderate me as well.

In a nutshell, the progress so far has been focused around gathering information and procuring a full stock restore image to be used via Odin or Heimdall. This is needed due to the highly dangerous nature of testing anything that unlocks a bootloader. Those attempting this could very easily brick their devices, and a full stock restoration would help get the devices up and running once again. Currently, there’s enough uploaded to restore a device, but everyone would be more comfortable with a complete backup.

Devs are currently working on identifying all of the partitions, obtaining UART Logs, and identifying potential points of exploitation. It is too early to say that any piece of information at this point is more important than any other, as any piece could eventually lead to the bootloader being unlocked. However, here are the possible points of exploitation:

Possible entry point MODEM – Someone with a JTAG setup test viability of modifying a single byte on /dev/block/mmcblk0p1
Possible entry point PARAMS – Samsung stores their boot parameters in PARAMS partition. It may be possible to modify PARAMS for insecure boot
Possible entry point BOOT – Modify CMDLINE parameter to load information from another location.
Possible entry point BOOT – We may be able to shove an insecure bootloader into memory, boot into that, and then use the recovery partition as our kernel partition. Bauwks 2nd U-Boot. U-Boot is available for the Exynos 4412, we need to find one for Qualcomm.
Possible entry point SYSTEM – It may be possible to use a 2nd init hack from this partition to load custom kernels into memory and reboot the kernel.

There is still a lot of work to be done, and there are no methods that have been tested yet. However, as information trickles in and the restoration files get completed, that’s likely to change very soon.

For additional information, check out the original thread. As previously stated, the thread is heavily modified to only include posts that are helpful in the effort. So be sure that before you post, it’s about something helpful!


_________
Want something on the XDA Portal? Send us a tip!

Former Writer

Former Writer is an editor on XDA-Developers, the largest community for Android users. View Former Writer's posts and articles here.
Emil Kako · May 23, 2015 at 12:31 pm · 3 comments

Which Features from Apple Watch Do You Think Android Wear Will Copy?

The Apple Watch and Android Wear are both growing platforms. Now that we've gotten the chance to see both of them in-depth, we can get a good idea of which directions the two are headed. We recently did a discussion and asked you what you thought the Apple Watch would copy from Android Wear. Today, we ask you the opposite. Which features do you think Android Wear will copy from the Apple Watch and why?

DISCUSS
Mario Tomás Serrafero · May 23, 2015 at 12:00 pm · 4 comments

XDA Picks: Best Apps of the Week (May 15 – 22)

Apps are at the front and center of any smartphone experience, and with over a million apps on the Google Play Store and new apps being submitted to our forums every day, staying up to date on the latest apps and games can be a hassle. At XDA we don’t discriminate apps - if it’s interesting, innovative, original or useful, we mention them. The XDA Portal Team loves apps too, and here are our top picks for this week.  ...

XDA NEWS
Emil Kako · May 22, 2015 at 10:35 pm · 5 comments

Other than XDA (of Course), What’s Your Favorite Site That Covers Android?

There is a number of other great sites that cover Android, so we're wondering which other sites our community likes to frequent. Tell us your favorite Android website and what about the site that makes it your favorite.

DISCUSS
Share This