Custom Sylvania ROM development

[cfrockit]

In Market on 2.2 Sylvania/Disco - Work In Progress member Xi2wiked located a previously unknown update file.

whilepoking around I found there's a new update formy 11.2.1.8, gonna burn and fla**** real quickto see what it is, then back to work on the market

A binary file comparison identifies the differences between the two files.

C:\Sylvania>fc /b 11.2.1.8.2.1.ius 11.2.1.8.2.2.ius
Comparing files 11.2.1.8.2.1.ius and 11.2.1.8.2.2.IUS
00000018: 6D EB
00000019: 32 0E
0000001A: 5B 83
0000001B: 11 26
0000001C: 29 7C
0000001D: B6 C9
0000001E: 84 38
0000001F: 69 47
0001D0C4: 40 60
0001D0CD: 35 32
0001D130: 40 60
0001D138: 02 20
0001D139: 3B 30
00020A20: 0B 05
00020A4C: 40 60
0002AA6C: 31 32
0002AA75: 32 30
0002AA76: 33 39
0002AA78: 30 31
0002AA79: 32 39
0002AA7B: 32 31
0002AA7C: 31 38

The first differences 0x18 to 0x1F are in the "InfoTM Update Wrap Tool" (*ius) file header information.

The last part - Offsets 0x2AA6C to 0x2AA7C differences are the time stamp for U-boot. However, the version of the file is the same "627".

U-Boot 2009.08-svn627 (Jan 22 2013 - 09:19:18) in file 11.2.1.8.2.2.ius

U-Boot 2009.08-svn627 (Jan 21 2013 - 23:02:21) in file 11.2.1.8.2.1.ius

This U-boot version is different than the one originally identified that failed to install since it wouldn't respond to screen touches.

The version of U-boot is depicted in the image in parenthesis ( ) after the Hardware ID "hwver".

Work In Progress on remaining differences.

[Sponsors]

[Xi2wiked]

Let me know if you need anything from me in regards to this update, Im still messing around with it on my tab. Btw, if anyone wants to try editing/rebuilding a custom update for the 11.2.1.8 let me know because I have absolutely no problem flashing it to my tab as long as I can get it to burn to my sd card I like being a test dummy!

[Xi2wiked]

We need to figure out where our recovery is. Logcat anyone?

[Xi2wiked]

I wanna try and get us a recovery. There is 2 recovery methods I'm looking into. Would prefer a flashable clockwork recovery .Img over the second choice though......

[Xi2wiked]

Gonna get me a new laptop to try and build a cwm. Recovery for our devices. What we need is for someone to get us the source code. I also want to try and build a cyanogen mod rom for our device.

[Xi2wiked]

K, I emailed Koushik Dutta about clockwork recovery. Might be donating a device to help the cause......

[st0ne]

I have 2 of the EX7 tabs. I have one flashed to 11.2.1.5 beta3 and the other is "out of the box" stock.
I am going to flash the different vers of the 11.2.1.5 rom on to each and see them side by side.
BUT... before I flash the stock one (DG2.01) I am pulling all the folders off. I have rooted it with universal androot. and am running FileExpert to copy them to my SD card them I'll put them on my computer for later comparison. But is there anything I should REALLY be getting? or anything I should just forget?
What should I do?

[Xi2wiked]

I have 2 of the EX7 tabs. I have one flashed to 11.2.1.5 beta3 and the other is "out of the box" stock.
I am going to flash the different vers of the 11.2.1.5 rom on to each and see them side by side.
BUT... before I flash the stock one (DG2.01) I am pulling all the folders off. I have rooted it with universal androot. and am running FileExpert to copy them to my SD card them I'll put them on my computer for later comparison. But is there anything I should REALLY be getting? or anything I should just forget?
What should I do?

Can you get me a logcat if/when you do the update? I wanna see just what the system does when it flashes, and where exactly the recovery for this device is.

[st0ne]

i can do that on it rooted with ADB or a terminal emulator right?
the command is: logcat if/ ?

[Xi2wiked]

Sure lol
I also need to see at what point during boot does the /system/bin get accessed. We might just be able to hijack the boot and get a partial recovery