[Galaxy Tab  Android Development] AdamOutler:
First Off, Huge thanks to F50+ This man sacrificed his tab to locate these resistors.

introduction

I'm not kidding when I say UnBrickable. Modifying the OM pins means you can boot from USB, UART or MMC. This makes the device quite UNBRICKABLE. There is nothing you can do software wise to prevent the device from booting into this mode. We are communicating with the unrewritable, efused IROM on the processor. It's the thing that makes the system on a chip into a "system on a chip".I am here now to tell you how to turn your Samsung P1000 into a KIT-S5PC110 development board. The KIT-S5PC110 development board is the platform used to develop our phones. There are some differences between this mod and the official development platform. The S5PC110 has a removable internal SDCard and no touchscreen.

Why would you want to do this? When you plug in the battery and connect it to the computer in "off" mode, it will become an S5PC110 board awaiting download of a program to run. This occurs long before anything like software or firmware enters the processor. This is the IROM of the device awaiting commands or a power on signal.

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.

4. Permanent.

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.

After performing this mod:

Remove the battery, replace the battery, your phone will connect to the computer via USB and await commands. Otherwise it will pretty much act like a P1000. See the Special Instructions section.

Part 1:Hardware Modification

You will need:

1. Get someone who knows what they're doing with a soldering iron. If they don't know what flux is, then they don't know what they're doing. You can send me a PM(or email my username@gmail.com) or Connexion2005(aka MobileTechVideos.com).

2. Soldering iron - make sure it's sharp, if it's not sharp, then sharpen it, flux it and retin it.

3. fFux

4. Solder

5. Tweezers

6. A relay (possibly- for the wire within to use as a bridge)

7. A #1 tri-blade driver

performing the modification:

1. tear apart your Galaxy Tab... Make sure to take out your SIM and external SDCard before you do this.

1A. Remove the screws.

1B. Separate the top case from the bottom case

****VIDEO OR PICTURES NEEDED*****

2. Perform the mod as follows: remove the xOM5 resistor and jumper the non-grounded pad of xOM5 to the same side of xOM0 or xOM3.

I will be able to give more detail after I have performed this modification myself.

3. reassemble the Tab.

Special Instructions

This replaces the battery charging sequence. The normal battery charging sequence can be activated by holding power for 4 seconds, then plugging in the device, or you can use an authentic Samsung Charging Cable for charging the battery

To turn on the device, and operate in normal mode, you must hold the power button for 5 seconds.

Part 2: Software Based Resurrection

You Must have UnBrickable Mod applied to your device. If you're not sure, run this tool under Linux: http://xdaforums.com/showthread.php?t=1257434

This currently only works for

Linux based

computers or Windows based computers with proper drivers installed, with a Linux Virtual Machine, Get Ubuntu here: http://www.ubuntu.com , Get Virtualbox Here: http://www.virtualbox.org/wiki/Downloads

You must have Java installed on your computer: http://www.java.com/en/download/

The entire software resurrection can be summed up like this

[YOUTUBE]fw-D_cKeAb8[/YOUTUBE]

Here is a Galaxy Tab specific video

[youtube]1685qGjtpjI[/youtube]

Unbricking:

1. Apply UnBrickable Mod to your device: see Hardware Modification section

2. Run The Ultimate UnBrickable Resurrector. You can find the Resurrector here in our SVN repository http://code.google.com/p/hummingbird-hibl/downloads/list

When you see this image you are in S5PC110 SEC SoC mode. When you see this mode you must proceed to step 2.

If it will only show this image, then you have not performed the modification correctly, or you have a hardware problem.

If it shows this, regardless of what's on your screen, you're in download mode. Proceded to step 3.

2. Click the Download Mode button (then click the one next to it). I find it's easiest to click Download Mode, type a password, plug in the device, then press enter.

3. Run Heimdall One-Click to flash firmware on your device. http://xdaforums.com/showthread.php?t=1323527

4. repeat steps 2 and 3 with bootloader flashing enabled (Heimdall One-Click has a safety mechanism which requires you to flash once before flashing bootloaders).

Conclusion

Congratulations. You now have a device which works like a KIT-S5PC110 with an OM Value of 29. Now get to developing some serious custom software.

reading material

Creating your own Samsung Bootloaders: http://xdaforums.com/showthread.php?t=1233273

KIT-S5PC110 manual: http://www.mediafire.com/?94krzvvxksvmuxh

how to use DNW: http://tinyurl.com/dnw-how-to

Flash using openOCD and DNW: http://www.arm9board.net/wiki/index.php?title=Flash_using_OpenOCD_and_DNW

another DNW example: http://www.boardset.com/products/mv6410.php

ODroid dev center: http://dev.odroid.com/projects/uboot/wiki/#s-7.2

drivers and utilities

This will be an ever expanding list

Linux Automated UnBricker:http://code.google.com/p/hummingbird-hibl/downloads/list

Windows Drivers http://xdaforums.com/attachment.php?attachmentid=678937&d=1312590673

Windows Download Tool DNW: http://xdaforums.com/attachment.php?attachmentid=678938&d=1312590673

Windows Command Line tool: http://xdaforums.com/showpost.php?p=17202523&postcount=27

Linux DNW Utility: http://dev.odroid.com/projects/uboot/wiki/#s-7.2

Linux ModeDetect tool: http://code.google.com/p/hummingbird-hibl/downloads/list

firmware

Bootloader Hello World by Rebellos http://xdaforums.com/attachment.php?attachmentid=698077&d=1314105521

UnBrick tool http://xdaforums.com/showthread.php?t=1242466

Conclusion

Congratulations. You now have a device which works like a KIT-S5PC110 with an OM Value of 29. Now get to developing some serious custom software. See here for setting up the UART output http://xdaforums.com/showthread.php?t=1235219