[Verizon Samsung Galaxy S III] mybook4:
Info about the SecSettings.apk decompile (Note: This was originally done in order to see how we could make a 4g toggle, so it's in that context)

Contents of the mounted modem partition (LG1)

Download the VRLG1 modem CWM zip from the development forum sticky. Extract zip.

Instructions:

OSX

-change name of NON-HLOS.bin to NON-HLOS.img. Double click to mount with Disk Utility

Linux

mkdir ~/VRLG1
sudo mount -o loop /path/to/NON-HLOS.bin ~/VRLG1

Inside is a folder named image.

Inside the image folder is bunch of files (most of them binary)

Here's a list made by running

ls -al ~/VRLG1/image/ > ~/listOfFiles.txt

total 42496
drwxr-xr-x 2 root root 16384 Jul 5 2011 .
drwxr-xr-x 3 root root 16384 Dec 31 1969 ..
-rwxr-xr-x 1 root root 244 Jul 4 13:25 dsps.b00
-rwxr-xr-x 1 root root 160 Jul 4 13:25 dsps.b01
-rwxr-xr-x 1 root root 147456 Jul 4 13:25 dsps.b02
-rwxr-xr-x 1 root root 31872 Jul 4 13:25 dsps.b03
-rwxr-xr-x 1 root root 6220 Jul 4 13:25 dsps.b04
-rwxr-xr-x 1 root root 13824 Jul 4 13:25 dsps.b05
-rwxr-xr-x 1 root root 404 Jul 4 13:25 dsps.mdt
-rwxr-xr-x 1 root root 180 Jul 4 12:38 dxhdcp2.b00
-rwxr-xr-x 1 root root 6520 Jul 4 12:38 dxhdcp2.b01
-rwxr-xr-x 1 root root 135168 Jul 4 12:38 dxhdcp2.b02
-rwxr-xr-x 1 root root 2100 Jul 4 12:38 dxhdcp2.b03
-rwxr-xr-x 1 root root 6700 Jul 4 12:38 dxhdcp2.mdt
-rwxr-xr-x 1 root root 308 Jul 4 13:24 modem.b00
-rwxr-xr-x 1 root root 6600 Jul 4 13:24 modem.b01
-rwxr-xr-x 1 root root 21960368 Jul 4 13:24 modem.b02
-rwxr-xr-x 1 root root 4954465 Jul 4 13:24 modem.b03
-rwxr-xr-x 1 root root 1358104 Jul 4 13:24 modem.b04
-rwxr-xr-x 1 root root 72200 Jul 4 13:24 modem.b06
-rwxr-xr-x 1 root root 707124 Jul 4 13:24 modem.b07
-rwxr-xr-x 1 root root 1044 Jul 4 13:16 modem_f1.b00
-rwxr-xr-x 1 root root 7060 Jul 4 13:16 modem_f1.b01
-rwxr-xr-x 1 root root 2676 Jul 4 13:16 modem_f1.b02
-rwxr-xr-x 1 root root 954800 Jul 4 13:16 modem_f1.b03
-rwxr-xr-x 1 root root 575208 Jul 4 13:16 modem_f1.b04
-rwxr-xr-x 1 root root 246484 Jul 4 13:16 modem_f1.b05
-rwxr-xr-x 1 root root 94208 Jul 4 13:16 modem_f1.b06
-rwxr-xr-x 1 root root 13568 Jul 4 13:16 modem_f1.b07
-rwxr-xr-x 1 root root 11212 Jul 4 13:16 modem_f1.b08
-rwxr-xr-x 1 root root 9548 Jul 4 13:16 modem_f1.b09
-rwxr-xr-x 1 root root 68223 Jul 4 13:16 modem_f1.b10
-rwxr-xr-x 1 root root 113468 Jul 4 13:16 modem_f1.b13
-rwxr-xr-x 1 root root 164412 Jul 4 13:16 modem_f1.b14
-rwxr-xr-x 1 root root 3604 Jul 4 13:16 modem_f1.b21
-rwxr-xr-x 1 root root 28156 Jul 4 13:16 modem_f1.b22
-rwxr-xr-x 1 root root 19136 Jul 4 13:16 modem_f1.b23
-rwxr-xr-x 1 root root 74360 Jul 4 13:16 modem_f1.b25
-rwxr-xr-x 1 root root 49740 Jul 4 13:16 modem_f1.b26
-rwxr-xr-x 1 root root 84476 Jul 4 13:16 modem_f1.b29
-rwxr-xr-x 1 root root 1064 Jul 4 13:16 modem_f1.fli
-rwxr-xr-x 1 root root 8104 Jul 4 13:16 modem_f1.mdt
-rwxr-xr-x 1 root root 1044 Jul 4 13:16 modem_f2.b00
-rwxr-xr-x 1 root root 7060 Jul 4 13:16 modem_f2.b01
-rwxr-xr-x 1 root root 2676 Jul 4 13:16 modem_f2.b02
-rwxr-xr-x 1 root root 955792 Jul 4 13:16 modem_f2.b03
-rwxr-xr-x 1 root root 579032 Jul 4 13:16 modem_f2.b04
-rwxr-xr-x 1 root root 239892 Jul 4 13:16 modem_f2.b05
-rwxr-xr-x 1 root root 94208 Jul 4 13:16 modem_f2.b06
-rwxr-xr-x 1 root root 13568 Jul 4 13:16 modem_f2.b07
-rwxr-xr-x 1 root root 11212 Jul 4 13:16 modem_f2.b08
-rwxr-xr-x 1 root root 9580 Jul 4 13:16 modem_f2.b09
-rwxr-xr-x 1 root root 68223 Jul 4 13:16 modem_f2.b10
-rwxr-xr-x 1 root root 116188 Jul 4 13:16 modem_f2.b13
-rwxr-xr-x 1 root root 158012 Jul 4 13:16 modem_f2.b14
-rwxr-xr-x 1 root root 3604 Jul 4 13:16 modem_f2.b21
-rwxr-xr-x 1 root root 28156 Jul 4 13:16 modem_f2.b22
-rwxr-xr-x 1 root root 19200 Jul 4 13:16 modem_f2.b23
-rwxr-xr-x 1 root root 74360 Jul 4 13:16 modem_f2.b25
-rwxr-xr-x 1 root root 49756 Jul 4 13:16 modem_f2.b26
-rwxr-xr-x 1 root root 84476 Jul 4 13:16 modem_f2.b29
-rwxr-xr-x 1 root root 1064 Jul 4 13:16 modem_f2.fli
-rwxr-xr-x 1 root root 8104 Jul 4 13:16 modem_f2.mdt
-rwxr-xr-x 1 root root 6908 Jul 4 13:24 modem.mdt
-rwxr-xr-x 1 root root 276 Jul 4 13:15 q6.b00
-rwxr-xr-x 1 root root 6580 Jul 4 13:15 q6.b01
-rwxr-xr-x 1 root root 3447760 Jul 4 13:15 q6.b03
-rwxr-xr-x 1 root root 1653278 Jul 4 13:15 q6.b04
-rwxr-xr-x 1 root root 757840 Jul 4 13:15 q6.b05
-rwxr-xr-x 1 root root 14472 Jul 4 13:15 q6.b06
-rwxr-xr-x 1 root root 6856 Jul 4 13:15 q6.mdt
-rwxr-xr-x 1 root root 180 Jul 4 12:37 tzapps.b00
-rwxr-xr-x 1 root root 6520 Jul 4 12:37 tzapps.b01
-rwxr-xr-x 1 root root 503808 Jul 4 12:37 tzapps.b02
-rwxr-xr-x 1 root root 452 Jul 4 12:37 tzapps.b03
-rwxr-xr-x 1 root root 6700 Jul 4 12:37 tzapps.mdt
-rwxr-xr-x 1 root root 212 Jul 4 12:31 wcnss.b00
-rwxr-xr-x 1 root root 140 Jul 4 12:31 wcnss.b01
-rwxr-xr-x 1 root root 8360 Jul 4 12:31 wcnss.b02
-rwxr-xr-x 1 root root 1778532 Jul 4 12:31 wcnss.b04
-rwxr-xr-x 1 root root 352 Jul 4 12:31 wcnss.mdt

The biggest file by far is modem.b02

---------- Post added at 08:15 PM ---------- Previous post was at 07:59 PM ----------

And for comparison...

ATT UCLG1 Modem files

total 43088
drwxr-xr-x 2 root root 16384 Jul 5 2011 .
drwxr-xr-x 3 root root 16384 Dec 31 1969 ..
-rwxr-xr-x 1 root root 244 Jul 4 13:23 dsps.b00
-rwxr-xr-x 1 root root 160 Jul 4 13:23 dsps.b01
-rwxr-xr-x 1 root root 147456 Jul 4 13:23 dsps.b02
-rwxr-xr-x 1 root root 31872 Jul 4 13:23 dsps.b03
-rwxr-xr-x 1 root root 6220 Jul 4 13:23 dsps.b04
-rwxr-xr-x 1 root root 13824 Jul 4 13:23 dsps.b05
-rwxr-xr-x 1 root root 404 Jul 4 13:23 dsps.mdt
-rwxr-xr-x 1 root root 180 Jul 4 12:38 dxhdcp2.b00
-rwxr-xr-x 1 root root 6520 Jul 4 12:38 dxhdcp2.b01
-rwxr-xr-x 1 root root 135168 Jul 4 12:38 dxhdcp2.b02
-rwxr-xr-x 1 root root 2132 Jul 4 12:38 dxhdcp2.b03
-rwxr-xr-x 1 root root 6700 Jul 4 12:38 dxhdcp2.mdt
-rwxr-xr-x 1 root root 308 Jul 4 13:23 modem.b00
-rwxr-xr-x 1 root root 6600 Jul 4 13:23 modem.b01
-rwxr-xr-x 1 root root 22608048 Jul 4 13:23 modem.b02
-rwxr-xr-x 1 root root 4941537 Jul 4 13:23 modem.b03
-rwxr-xr-x 1 root root 1370392 Jul 4 13:23 modem.b04
-rwxr-xr-x 1 root root 72256 Jul 4 13:23 modem.b06
-rwxr-xr-x 1 root root 682964 Jul 4 13:23 modem.b07
-rwxr-xr-x 1 root root 1044 Jul 4 13:15 modem_f1.b00
-rwxr-xr-x 1 root root 7060 Jul 4 13:15 modem_f1.b01
-rwxr-xr-x 1 root root 2676 Jul 4 13:15 modem_f1.b02
-rwxr-xr-x 1 root root 954800 Jul 4 13:15 modem_f1.b03
-rwxr-xr-x 1 root root 575208 Jul 4 13:15 modem_f1.b04
-rwxr-xr-x 1 root root 246484 Jul 4 13:15 modem_f1.b05
-rwxr-xr-x 1 root root 94208 Jul 4 13:15 modem_f1.b06
-rwxr-xr-x 1 root root 13568 Jul 4 13:15 modem_f1.b07
-rwxr-xr-x 1 root root 11212 Jul 4 13:15 modem_f1.b08
-rwxr-xr-x 1 root root 9548 Jul 4 13:15 modem_f1.b09
-rwxr-xr-x 1 root root 68223 Jul 4 13:15 modem_f1.b10
-rwxr-xr-x 1 root root 113468 Jul 4 13:15 modem_f1.b13
-rwxr-xr-x 1 root root 164412 Jul 4 13:15 modem_f1.b14
-rwxr-xr-x 1 root root 3604 Jul 4 13:15 modem_f1.b21
-rwxr-xr-x 1 root root 28156 Jul 4 13:15 modem_f1.b22
-rwxr-xr-x 1 root root 19136 Jul 4 13:15 modem_f1.b23
-rwxr-xr-x 1 root root 74360 Jul 4 13:15 modem_f1.b25
-rwxr-xr-x 1 root root 49740 Jul 4 13:15 modem_f1.b26
-rwxr-xr-x 1 root root 84476 Jul 4 13:15 modem_f1.b29
-rwxr-xr-x 1 root root 1064 Jul 4 13:15 modem_f1.fli
-rwxr-xr-x 1 root root 8104 Jul 4 13:15 modem_f1.mdt
-rwxr-xr-x 1 root root 1044 Jul 4 13:15 modem_f2.b00
-rwxr-xr-x 1 root root 7060 Jul 4 13:15 modem_f2.b01
-rwxr-xr-x 1 root root 2676 Jul 4 13:15 modem_f2.b02
-rwxr-xr-x 1 root root 955792 Jul 4 13:15 modem_f2.b03
-rwxr-xr-x 1 root root 579032 Jul 4 13:15 modem_f2.b04
-rwxr-xr-x 1 root root 239892 Jul 4 13:15 modem_f2.b05
-rwxr-xr-x 1 root root 94208 Jul 4 13:15 modem_f2.b06
-rwxr-xr-x 1 root root 13568 Jul 4 13:15 modem_f2.b07
-rwxr-xr-x 1 root root 11212 Jul 4 13:15 modem_f2.b08
-rwxr-xr-x 1 root root 9580 Jul 4 13:15 modem_f2.b09
-rwxr-xr-x 1 root root 68223 Jul 4 13:15 modem_f2.b10
-rwxr-xr-x 1 root root 116188 Jul 4 13:15 modem_f2.b13
-rwxr-xr-x 1 root root 158012 Jul 4 13:15 modem_f2.b14
-rwxr-xr-x 1 root root 3604 Jul 4 13:15 modem_f2.b21
-rwxr-xr-x 1 root root 28156 Jul 4 13:15 modem_f2.b22
-rwxr-xr-x 1 root root 19200 Jul 4 13:15 modem_f2.b23
-rwxr-xr-x 1 root root 74360 Jul 4 13:15 modem_f2.b25
-rwxr-xr-x 1 root root 49756 Jul 4 13:15 modem_f2.b26
-rwxr-xr-x 1 root root 84476 Jul 4 13:15 modem_f2.b29
-rwxr-xr-x 1 root root 1064 Jul 4 13:15 modem_f2.fli
-rwxr-xr-x 1 root root 8104 Jul 4 13:15 modem_f2.mdt
-rwxr-xr-x 1 root root 6908 Jul 4 13:23 modem.mdt
-rwxr-xr-x 1 root root 276 Jul 4 13:13 q6.b00
-rwxr-xr-x 1 root root 6580 Jul 4 13:13 q6.b01
-rwxr-xr-x 1 root root 3447760 Jul 4 13:13 q6.b03
-rwxr-xr-x 1 root root 1653278 Jul 4 13:13 q6.b04
-rwxr-xr-x 1 root root 757840 Jul 4 13:13 q6.b05
-rwxr-xr-x 1 root root 14472 Jul 4 13:13 q6.b06
-rwxr-xr-x 1 root root 6856 Jul 4 13:13 q6.mdt
-rwxr-xr-x 1 root root 180 Jul 4 12:38 tzapps.b00
-rwxr-xr-x 1 root root 6520 Jul 4 12:38 tzapps.b01
-rwxr-xr-x 1 root root 503808 Jul 4 12:38 tzapps.b02
-rwxr-xr-x 1 root root 452 Jul 4 12:38 tzapps.b03
-rwxr-xr-x 1 root root 6700 Jul 4 12:38 tzapps.mdt
-rwxr-xr-x 1 root root 212 Jul 4 12:32 wcnss.b00
-rwxr-xr-x 1 root root 140 Jul 4 12:32 wcnss.b01
-rwxr-xr-x 1 root root 8360 Jul 4 12:32 wcnss.b02
-rwxr-xr-x 1 root root 1778532 Jul 4 12:32 wcnss.b04
-rwxr-xr-x 1 root root 352 Jul 4 12:32 wcnss.mdt

At least the file layout looks very similar.

Looks like the only files that have a

different size

are

dxhdcp2.b03

modem.b02

modem.b03

modem.b04

modem.b06

modem.b07

Performed an md5sum on all files in both the VZW VRLG1 and ATT UCLG1 modems with the following commands (I mounted the AT&T modem in the ATT directory and the Verizon modem in the VZW directory):

find ./ATT/image -type f -print0 | xargs -0 md5sum > ./ATTfiles.md5
find ./VZW/image -type f -print0 | xargs -0 md5sum > ./VZWfiles.md5

Matching files (same md5 hash for both ATT and VZW)

modem_f1.b10

modem_f1.b06

tzapps.b03

tzapps.b02

wcnss.mdt

Mismatching files (different md5 hash for both ATT and VZW)

dsps.b02

dsps.b05

dsps.b00

dsps.b03

dsps.b01

dsps.b04

dsps.mdt

modem.b00

modem.b06

modem.b04

modem.b03

modem.b01

modem.b07

modem.b02

modem.mdt

modem_f2.b04

modem_f2.b25

modem_f2.b05

modem_f1.b03

modem_f1.b22

modem_f2.b14

modem_f1.b26

modem_f2.mdt

modem_f2.b02

modem_f1.b08

modem_f1.b05

modem_f1.b07

modem_f2.fli

modem_f1.b25

modem_f2.b10

modem_f2.b21

modem_f1.b14

modem_f2.b13

modem_f2.b07

modem_f1.b29

modem_f1.b23

modem_f1.b00

modem_f1.b01

modem_f2.b00

modem_f2.b03

modem_f1.b04

modem_f2.b26

modem_f1.b02

modem_f1.mdt

modem_f1.b13

modem_f2.b01

modem_f2.b29

modem_f2.b22

modem_f1.fli

modem_f2.b06

modem_f2.b08

modem_f1.b09

modem_f2.b23

modem_f1.b21

modem_f2.b09

tzapps.b00

tzapps.b01

tzapps.mdt

dxhdcp2.b03

dxhdcp2.b01

dxhdcp2.b02

dxhdcp2.b00

dxhdcp2.mdt

q6.b00

q6.b01

q6.b05

q6.b06

q6.b04

q6.b03

q6.mdt

wcnss.b04

wcnss.b00

wcnss.b01

wcnss.b02