For those of you who attended to the Big Android BBQ 2011, surely you remember the great presentation from XDA Recognized Developers AdamOutler and connexion2005 who showed their high-level hardware mod called UnBrickable Mod, explained JTAG, and gave fascinating presentations on open source development boards. Well, the project has reached another level since the team has successfully implemented this mod on a bricked Galaxy S I9000 and resurrected it!
Be aware that this procedure is delicate, so proceed carefully. And please let us know your experiences.
Originally posted by AdamOutler
The i9000 Development Platform, AKA UnBrickable Mod and Software Based Resurrection
Some of you will, remember lets save some bricks? Well, it’s taken a long time to perfect this on the i9000, which is ironic because this is where it started, but we finally have a way! You can perform this mod on a bricked device and resurrect it, or you can apply it as a protective measure.
The way this works is we change the OM value in the processor by modifying an individual electronic binary signal. The signal we are interested in is xOM5. This line is normally grounded, causing the overall OM value to equal 0x9. When we bring this line high, the OM value becomes 0x29. This reverses the booting order and ensures you will always have boot from USB available before the device starts.
This is a better option than JTAG for resurrecting a device. How could it possibly be better then JTAG? Let’s count the ways….
1. The only part required is a wire.
2. No shipping time.
3. No cost for a box to interface the computer.
5. Can be done as a preventive measure.
6. Gives the ability to test new Bootloaders temporarily.
7. Allows development of the entire system.
8. Removes worry about flashing and acts as a backup.
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