Work Out ICS FIle Download location - Sony Tablet S

Hi all, thought I would post my findings and see if we can 'crack' this baby.
Thanks to Condi we have this for th US update.
info.update.sony.net/ST002/nbx03_001/contents/0014/signed-nbx03_001-ota-120410004.zip
I would like to try and 'decrypt' this to find my download file for New Zealand (if it is even there lol)
http://info.update.sony.net/
Self explainitory
ST002
From build.prop 'ro.sony.update.category_id=ST002'
nbx03_001
From build.prop 'ro.sony.update.service_id=nbx03_001'
or 'ro.sony.sku.base=nbx03_001
contents
'Contents'
0014
Update: This is just a numbered folder - Thanks to quiqsilver for that
signed-nbx03_001
File name 'ro.sony.sku.base=nbx03_001' or 'ro.sony.update.service_id=nbx03_001'
-ota-
'Over the air'
120410004.zip
This is the hardest bit as put below by quiqsilver
quiqsilver said:
it uses ro.sony.build.incremental instead of ro.build.version.incremental, which makes it a bit harder to guess.
Click to expand...
Click to collapse
I was thinking possibly the incremental number had something to do with date:
i.e 120410= 10th April 2012????
And the 004 is some kind of version number.
Any thoughts????
Thanks

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stifilz said:
0014
??Unsure of this any ideas??
Click to expand...
Click to collapse
This is just a numbered folder. Sony typically creates a new one with an incremented value for each update. E.g., 3.2.1 r2 was in 0013, ICS is in 0014. These are not the same for different regions.
stifilz said:
120410004.zip
This is the hardest bit as put below by quiqsilver
I was thinking possibly the incremental number had something to do with date:
i.e 120410= 10th April 2012????
And the 004 is some kind of version number.
Click to expand...
Click to collapse
The beginning of it could be date related, but that wouldn't work for the 3.2.1 r2 numbers. These values were neighbors in previous versions, so my expectation would be that scanning upwards from 120410000 would find them. E.g.,
3.2.1 r2:
US
ro.sony.build.incremental=111201009
UK wifi
ro.sony.build.incremental=111201017
FR wifi
ro.sony.build.incremental=111201023
HK wifi
ro.sony.build.incremental=111201040
They could put the update anywhere and name it anything. It doesn't necessarily have to follow the schema. The tablet queries http://info.update.sony.net/ST00X/nbx03_0XX/info/info.xml, AES decrypts it, and then uses the contained information to determine what updates are available and where they are located. It would be easy to write some code that would scan all possibilities of file names and paths, but I don't think that they're on the server yet.

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quiqsilver said:
The beginning of it could be date related, but that wouldn't work for the 3.2.1 r2 numbers. These values were neighbors in previous versions, so my expectation would be that scanning upwards from 120410000 would find them. E.g.,
3.2.1 r2:
US
ro.sony.build.incremental=111201009
UK wifi
ro.sony.build.incremental=111201017
FR wifi
ro.sony.build.incremental=111201023
HK wifi
ro.sony.build.incremental=111201040
Click to expand...
Click to collapse
Sorry don't understand what you mean here? Could this not also be a date 1st Dec 2011?
quiqsilver said:
They could put the update anywhere and name it anything. It doesn't necessarily have to follow the schema. The tablet queries http://info.update.sony.net/ST00X/nbx03_0XX/info/info.xml, AES decrypts it, and then uses the contained information to determine what updates are available and where they are located. It would be easy to write some code that would scan all possibilities of file names and paths, but I don't think that they're on the server yet.
Click to expand...
Click to collapse
Good info here 'thanks.' I have no idea how to write some code to do that. Surely there should be someone here on xda that can... when these are available.
Thanks again

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stifilz said:
Sorry don't understand what you mean here? Could this not also be a date 1st Dec 2011?
Good info here 'thanks.' I have no idea how to write some code to do that. Surely there should be someone here on xda that can... when these are available.
Thanks again
Click to expand...
Click to collapse
Mea culpa; it is the date. I wasn't around when 3.2.1 r2 came out and I read some bad information about the release date. The 3.2.1 r2 updates were, in fact, built on Thu Dec 1, so your date theory appears to be correct. This also means that they've been testing ICS for at least 2 weeks.
I could write something that will find the updates. However, once ICS is released in the other regions, it's much easier to just intercept the network traffic to see the path to the update.

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No worries, so what is the last numbers i.e 004? Release version or something like that. I spose it doesn't matter as the won't be on the server at this point anyway or it would have updated allready??. Would be nice to get a back up once they are there.
I am currently kernel10 so can not gain root and extract that way.

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stifilz said:
No worries, so what is the last numbers i.e 004? Release version or something like that.
Click to expand...
Click to collapse
I believe that they simply increment for each build they make. E.g., the first build of the day on April 10, 2012 was 120410001; the second was 120410002, etc.
stifilz said:
I spose it doesn't matter as the won't be on the server at this point anyway or it would have updated allready?
Click to expand...
Click to collapse
The update could be on the server while that region shows "no updates" if it wasn't added to info.xml yet. I don't know definitively that they're not there yet; they could very well be sitting there right now.