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OP AdamOutler

3rd June 2011, 02:12 AM   |  #1  
I've found the datasheet for the FSA9280 online today. So, now I can post about it.

This datasheet is valid for all GalaxyS and GalaxySII devices.

Ok... So, first off.. A JIG is the line on the FSA chip which leads to the processor. The JIG line is usually high. Any resistor which makes that line go LOW is a JIG resistor.
These are the JIG values. They are used on the usb port between pins 4(X or ID) and pin 5(ground).

Here are the rest:
Last edited by AdamOutler; 3rd June 2011 at 02:43 AM.
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3rd June 2011, 06:27 PM   |  #2  
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genius, best of Luck!

go @Lulzsec!
3rd June 2011, 06:54 PM   |  #3  
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Ok, so obviously the most interesting is the the factory mode boot on UART. Good stuff.
3rd June 2011, 07:08 PM   |  #4  
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Didn't get much, but would be very happy if this helps in the development of devices/JIGs that would help in unbricking the dead devices. And this what is intended of all this, as I get it.
3rd June 2011, 11:21 PM   |  #5  
There's 32 bits. This is all resistor values.. All 5 bits are taken. 32 choices.

I graphed it out.
Last edited by AdamOutler; 3rd June 2011 at 11:35 PM.
3rd June 2011, 11:25 PM   |  #6  
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3rd June 2011, 11:36 PM   |  #7  
Originally Posted by steph2


Sent from my GT-I9000 using XDA App

I just realized I missed both short and opened values... They set bits. Everything is taken. There cannot be any more. I updated the picture as well
7th June 2011, 09:45 AM   |  #8  
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thats really helpfull. thank you verry much!
19th June 2011, 02:34 PM   |  #9  
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I see there is an audio remote thing. Would it be possible to make an app in visual basic and use my sound card and a aux cable in the phone 3.5mm jack and send that into my phone?

Edit: there is also alot of commands on there with diffrent Ohms what do those commands do?
19th June 2011, 02:49 PM   |  #10  
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Great finding Adam!

I would like to prepare a rescue set for the SGS-2, from a JIG and a microSD. If I read your table correctly, the 301kOhm USB JIG forces the device to boot in "Factory mode 1".

Is there a description somewhere, what these modes mean? (my goal is to convince the device to look for the bootloader on the microSD)

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