wtf.. APX MODE?

DreadPirateDan · Feb 14, 2012 at 9:35 PM

lozor check this out from Nvidia (been a couple days since I emailed them):

Hello Daniel,

Thank you for the update,

Your case is being escalated to our Level 2 Technical Support group. The Level 2 agents will review the case notes and will contact you as soon they can to assist or point you in the right direction.

Best Regards,
NVIDIA Customer Care

(this was regarding me asking about if they knew how to access APX mode or how i could use NVFlash with sony tab s - first response was a bust, so I did a follow up email and this is the response so far)

condi · Feb 23, 2012

today again i've entered apx mode.
i've installed nvflash for tegra devices.
again (3rd time) when I try to load bootloader.bin it gives me:

Code:

nvflash --bl bootloader.bin --getpartitiontable partitiontable.txt
Nvflash started
rcm version 0X4
Command send failed (usb write failed)

Anybody has some experience with apx mode,
if I will get again apx mode, then I would like to know
what would work better, then gives error and exits apx..

br
condi

-----edit

ok, more info here
http://androidroot.mobi/technical/tf-secure-boot-key/
http://forum.xda-developers.com/showthread.php?t=1046994
we need correct SBK... that wount be easy..

sebarkh · Feb 23, 2012 at 8:41 PM

I keep my fingers crossed for you to find out as much about this as possible...

skoperst · Aug 11, 2010 44 14 0

I know that in Asus transformer the nvflash.exe was leaked and had a special miniloader inside, beside the bootloader.bin which was also encrypted and the transfer process had a special key called SBK.
That means unless Sony fooled around, you need their nvflash and the SBK code.
Without those things its rcm version 0X4 all the way down.

Can you share what the process which got you into the mode?

condi · Feb 26, 2012 at 10:35 AM

skoperst said:
I know that in Asus transformer the nvflash.exe was leaked and had a special miniloader inside, beside the bootloader.bin which was also encrypted and the transfer process had a special key called SBK.
That means unless Sony fooled around, you need their nvflash and the SBK code.
Without those things its rcm version 0X4 all the way down.

Can you share what the process which got you into the mode?

hmm... don't know how to exactly enter apx mode. Its not concerned in any button-combination etc. Its related to some 'signal' to bootloader/automagic app(s), etc, and after few unexpected reboots (which maybe broke some processes working/loggers?) it just enters in apx...

the most I got it when rooting (unsuccesfully) device.
i modified .bat file which just reboots device in loop,
copy it to 'Sony Tablet Root Tool v1.1' and give it a try.
I've succesfully entered apx mode with it - but only on first time,
once, i runed it, got out of room, came back after ~10-15min,
and my tab was in apx mode.
Then I tried again and it didn't work.

Just give it a try. Download, and cut '.txt' extension.

br
condi

Judah001 · Mar 12, 2012

I just got into APX mode on accident. I was messing around with my tab bringing it into stock recovery by holding power and volume up. When I entered into recovery mode I accident pressed power and volume down simultaneously then all of a sudden I went into apx mode. I have tired duplicating the process multiple times and have been unsuccessful. For whatever reason I was stuck in APX so I held the power button down which seemed to be at least a minute and the tablet booted up. Not sure if I discovered anything new but thought I would share.

condi · Apr 21, 2012 at 8:14 AM

Other driver state. 'Android Accessory Interface'.

Hi,

I'm not making new thread, posting here.
I was always thinking why sony tab switches driver state in some kind,
on boot - just run tab connected to pc - first state will be 'Sony Tablet S'
without driver, like 'unrecognized device' for a moment, then it switches to mtp (+adb optional if enabled). Now I know what it is.

I found a way to go to 'that state'. Its 'Android Accessory Interface'.
I dont have drivers for it currently.
I don't know if it will be useful for us, but every discovery is worth to be published

So, just run adb and put this command:

Code:

echo '1' > /sys/devices/virtual/usb_composite/accessory/enable

br
condi

rickwyatt · May 15, 2012 at 8:52 PM

could this work

iv been reading all over the web to find a way to use nvflash as you no we need a sbk to use it I found on the web a sbk generate site here

http://vache-android.com/v1/index.php?site=sbk it need a cpuid so I stated to look at ways to get the cpuid number and found this

http://http://forum.xda-developers.com/showthread.php?t=1624645 iv got my cpuid code form adb and its

043c708542213517 and with the sbk site I got this

Your SKB : 0x0C8D6F00 0x0433F601 0x6B5C1203 0xD9292103

could this work?

quiqsilver · May 16, 2012 at 2:38 AM

rickwyatt said:
iv been reading all over the web to find a way to use nvflash as you no we need a sbk to use it I found on the web a sbk generate site here

http://vache-android.com/v1/index.php?site=sbk it need a cpuid so I stated to look at ways to get the cpuid number and found this

http://http://forum.xda-developers.com/showthread.php?t=1624645 iv got my cpuid code form adb and its

043c708542213517 and with the sbk site I got this

Your SKB : 0x0C8D6F00 0x0433F601 0x6B5C1203 0xD9292103

could this work?

It will only work if Sony uses that same method to generate the SBK. You can test it in APX mode with "nvflash --bl bootloader.img --sbk 0x0C8D6F00 0x0433F601 0x6B5C1203 0xD9292103 --sync". If it works, it will spit out a bunch of chip data. If not, you will get a write error.

xyancompgeek · May 16, 2012

Hi, could somebody take a look at this thread? Dexter_nlb has found a way to enter a devce into APX Mode. Maybe the same method could work for the tab s? Not sure if its useful, but its worth a shot....
http://forum.xda-developers.com/showthread.php?t=962024

EDIT:Scratch that...........no such folder on the tab

rickwyatt · May 16, 2012 at 9:55 AM

Lol I can't get into APX mode

xyancompgeek · May 16, 2012 at 10:10 AM

This may be a bit more interesting.......anyone tried it?

http://forum.xda-developers.com/showpost.php?p=11758575&postcount=14

rickwyatt · May 16, 2012 at 10:15 AM

I've tried that one already but no go just boots as normal lol

xyancompgeek · May 16, 2012

it was said in some forums that if we only connected the ac power, nvflash could be made to work. then some people posted that they found a switch in the tablet which cut supply to the battery and made the tablet work only on ac power. could these two be connected?

Just had a talk with sony live customer support. they dont know how to do it. but if anyone's interested, the number for the higher level technicians is 239-245-6476 (US only, thats why i can't find out)

rickwyatt · May 16, 2012

Has anyone tried to use a usb connected to a usb plug and see if it drops into apx

xyancompgeek · May 16, 2012 at 12:30 PM

A little elaborate please?

rickwyatt · May 16, 2012 at 1:19 PM

What I mean is to use a powered charger eg from HTC or samsung and plug in to usb with it off and try to hold the vol - and tape the power button

xyancompgeek · May 16, 2012 at 3:41 PM

Ok, but why that? Just a hunch? Has it worked before?

ChristianTW · Apr 28, 2012 18 8 0

Hmm... so when I hold down the Vol - button the screen blinks and then holds as if trying to access something but then it boots in to normal mode as if it couldn't access it, so maybe holding down combined with power/usb and maybe Condi's .bat file? I haven't tested it yet, but I will as soon as I get my computer up and running.

rickwyatt · May 16, 2012 at 5:28 PM

It a Just a hunch mybe sony have a special usb cable that tells it to go into APX or a 3.5 jack that is grounded

wtf.. APX MODE?

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