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.
Aamir Siddiqui · May 27, 2015 at 02:12 pm · 1 comment

Samsung Galaxy S6 To Receive Major Camera Update

When the Samsung Galaxy S6 and S6 Edge were launched, they became the prime focus for all discussions as Samsung took a break on their traditional design philosophy and opted for something that their flagship lineup hadn't seen before. But along with the design, a lot of Android enthusiasts were also impressed by another aspect of the flagship duo: their camera. Even traditionally, the primary camera on Samsung's flagship lineup has been one of its stronger points as compared to other...

XDA NEWS
Faiz Malkani · May 27, 2015 at 01:34 pm · 4 comments

Tactile: An Addicting Game with Beautiful Material Design

The game industry has been around for decades, catering to a wide spectrum of people, young gamers and elder ones, casual gamers and serious ones, and for an industry with such specifications, innovation isn't the only fuel for success. An increasingly large number of games draw inspiration from another and build on top of that idea, and Tactile is one such product, an excellently executed brainchild of a mashup between Tetris and 2048. For 2048 veterans, the game will come across as relatively familiar....

XDA NEWS
Mario Tomás Serrafero · May 27, 2015 at 12:27 pm · 3 comments

Android’s Consistency and The User Experience

This is a site of power users, and it is fair to say that most of us are more knowledgeable about Android than the average Joe. We tinker and tweak by customizing every corner for endless hours, until we arrive at a comfortable software configuration. In contrast, a large chunk of Android users don’t even use a different launcher - and many don’t know what a launcher is in the first place!   When we get so involved in our...

XDA NEWS
Share This