[Galaxy Tab  Android Development] maniac3389:
Let me see if I can't help you guys out. I'm downloading "SPH-D700-DK28-8Gb-REL.tar.md5 Stock DK28 (Leaked)" from the Samsung_Galaxy_S/SPH-D700 wiki entry and will run the PIT file through the PITinfo tool to see what it says and post results.

Ended up downloading the ODIN package on that wiki page because it had the PIT file in it.

Epic 4G PIT File:

Contents of PIT file:./victory_8G_100528.pit
---------------------------------------------------------------------------
file magic = 0x12349876 (expected value)
Unknown data: 0x1 0 0x411e17 0x12fae0 0x43d800
Number of partitions = 12 (not the usual value)

Partition #1
Usual content: boot.bin, the primary boot loader (low-level hardware initialization)
partition entry type: 0 0 (normal partition)
ID = 0;	flags = 0;	unknown: 0
size = 1 blocks of 256 * 512 bytes = 131072 B = 128 kB = 0 MB
unknown string: [o.f.t. .]
partition name = [IBL+PBL.S.e.r.v.e.r.\.9.0.\.T.o.]
file name = [boot.bin..i.n.n.;.C.:.\.P.r.o.g...a.m. .F.i.l.e.s.\.E.S.T.s.o.f.]

Partition #2
Usual content: partition information table (PIT)
partition entry type: 0 0 (normal partition)
ID = 0x1;	flags = 0;	unknown: 0
size = 1 blocks of 256 * 512 bytes = 131072 B = 128 kB = 0 MB
unknown string: [........]
partition name = [PIT.............................]
file name = [.ries.pit.......................................................]

Partition #3
Usual content: efs.rfs
partition entry type: 0 0 (normal partition)
ID = 0x14;	flags = 0x2 (rfs file system);	unknown: 0
size = 40 blocks of 256 * 512 bytes = 5242880 B = 5120 kB = 5 MB
unknown string: [........]
partition name = [EFS.............................]
file name = [efs.rfs.........................................................]

Partition #4
Usual content: Sbl.bin, the secondary boot loader (loads linux kernel)
partition entry type: 0 0 (normal partition)
ID = 0x3;	flags = 0;	unknown: 0
size = 5 blocks of 256 * 512 bytes = 655360 B = 640 kB = 0 MB
unknown string: [........]
partition name = [SBL.............................]
file name = [sbl.bin.........................................................]

Partition #5
Usual content: backup of secondary boot loader
partition entry type: 0 0 (normal partition)
ID = 0x4;	flags = 0;	unknown: 0
size = 5 blocks of 256 * 512 bytes = 655360 B = 640 kB = 0 MB
unknown string: [........]
partition name = [SBL2............................]
file name = [sbl.bin.........................................................]

Partition #6
Usual content: param.lfs /mnt/.lfs j4fs
partition entry type: 0 0 (normal partition)
ID = 0x15;	flags = 0x2 (rfs file system);	unknown: 0
size = 20 blocks of 256 * 512 bytes = 2621440 B = 2560 kB = 2 MB
unknown string: [........]
partition name = [PARAM...........................]
file name = [param.lfs.......................................................]

Partition #7
Usual content: zImage, the linux kernel
partition entry type: 0 0 (normal partition)
ID = 0x6;	flags = 0;	unknown: 0
size = 30 blocks of 256 * 512 bytes = 3932160 B = 3840 kB = 3 MB
unknown string: [........]
partition name = [KERNEL..........................]
file name = [zImage..........................................................]

Partition #8
Usual content: recovery.bin, the backup copy of zImage/initramfs
partition entry type: 0 0 (normal partition)
ID = 0x7;	flags = 0;	unknown: 0
size = 30 blocks of 256 * 512 bytes = 3932160 B = 3840 kB = 3 MB
unknown string: [........]
partition name = [RECOVERY........................]
file name = [recovery.bin....................................................]

Partition #9
Usual content: factoryfs.rfs
partition entry type: 0 0 (normal partition)
ID = 0x16;	flags = 0x2 (rfs file system);	unknown: 0
size = 1074 blocks of 256 * 512 bytes = 140771328 B = 137472 kB = 134 MB
unknown string: [........]
partition name = [FACTORYFS.......................]
file name = [factoryfs.rfs...................................................]

Partition #10
Usual content: dbdata.rfs
partition entry type: 0 0 (normal partition)
ID = 0x17;	flags = 0x2 (rfs file system);	unknown: 0
size = 2056 blocks of 256 * 512 bytes = 269484032 B = 263168 kB = 257 MB
unknown string: [........]
partition name = [DATAFS.S........................]
file name = [datafs.rfs......................................................]

Partition #11
Usual content: cache.rfs
partition entry type: 0 0 (normal partition)
ID = 0x18;	flags = 0x2 (rfs file system);	unknown: 0
size = 700 blocks of 256 * 512 bytes = 91750400 B = 89600 kB = 87 MB
unknown string: [........]
partition name = [CACHE...........................]
file name = [cache.rfs.......................................................]

Partition #12
Usual content: modem.bin
partition entry type: 0 0 (normal partition)
ID = 0xb;	flags = 0;	unknown: 0
size = 50 blocks of 256 * 512 bytes = 6553600 B = 6400 kB = 6 MB
unknown string: [........]
partition name = [MODEM...........................]
file name = [modem.bin.......................................................]

PIT file from JMA:

Contents of PIT file:./gt-p1000_mr.pit
---------------------------------------------------------------------------
file magic = 0x12349876 (expected value)
Unknown data: 0x40d800 0x1 0 0x3e1e17 0x22f698
Number of partitions = 15 (not the usual value)

Partition #1
Usual content: boot.bin, the primary boot loader (low-level hardware initialization)
partition entry type: 0 0 (normal partition)
ID = 0;	flags = 0;	unknown: 0
size = 1 blocks of 256 * 512 bytes = 131072 B = 128 kB = 0 MB
unknown string: [........]
partition name = [IBL+PBL.........................]
file name = [boot.bin........................................................]

Partition #2
Usual content: partition information table (PIT)
partition entry type: 0 0 (normal partition)
ID = 0x1;	flags = 0;	unknown: 0
size = 1 blocks of 256 * 512 bytes = 131072 B = 128 kB = 0 MB
unknown string: [........]
partition name = [PIT.............................]
file name = [gt-p1000.pit....................................................]

Partition #3
Usual content: efs.rfs
partition entry type: 0 0 (normal partition)
ID = 0x14;	flags = 0x2 (rfs file system);	unknown: 0
size = 40 blocks of 256 * 512 bytes = 5242880 B = 5120 kB = 5 MB
unknown string: [........]
partition name = [EFS.............................]
file name = [efs.rfs.........................................................]

Partition #4
Usual content: Sbl.bin, the secondary boot loader (loads linux kernel)
partition entry type: 0 0 (normal partition)
ID = 0x3;	flags = 0;	unknown: 0
size = 5 blocks of 256 * 512 bytes = 655360 B = 640 kB = 0 MB
unknown string: [........]
partition name = [SBL.............................]
file name = [sbl.bin.........................................................]

Partition #5
Usual content: backup of secondary boot loader
partition entry type: 0 0 (normal partition)
ID = 0x4;	flags = 0;	unknown: 0
size = 5 blocks of 256 * 512 bytes = 655360 B = 640 kB = 0 MB
unknown string: [........]
partition name = [SBL2............................]
file name = [sbl.bin.........................................................]

Partition #6
Usual content: param.lfs /mnt/.lfs j4fs
partition entry type: 0 0 (normal partition)
ID = 0x15;	flags = 0x2 (rfs file system);	unknown: 0
size = 20 blocks of 256 * 512 bytes = 2621440 B = 2560 kB = 2 MB
unknown string: [........]
partition name = [PARAM...........................]
file name = [param.lfs.......................................................]

Partition #7
Usual content: zImage, the linux kernel
partition entry type: 0 0 (normal partition)
ID = 0x6;	flags = 0;	unknown: 0
size = 30 blocks of 256 * 512 bytes = 3932160 B = 3840 kB = 3 MB
unknown string: [........]
partition name = [KERNEL..........................]
file name = [zImage..........................................................]

Partition #8
Usual content: recovery.bin, the backup copy of zImage/initramfs
partition entry type: 0 0 (normal partition)
ID = 0x7;	flags = 0;	unknown: 0
size = 30 blocks of 256 * 512 bytes = 3932160 B = 3840 kB = 3 MB
unknown string: [........]
partition name = [RECOVERY........................]
file name = [zImage..........................................................]

Partition #9
Usual content: factoryfs.rfs
partition entry type: 0 0 (normal partition)
ID = 0x16;	flags = 0x2 (rfs file system);	unknown: 0
size = 1320 blocks of 256 * 512 bytes = 173015040 B = 168960 kB = 165 MB
unknown string: [........]
partition name = [FACTORYFS.......................]
file name = [factoryfs.rfs...................................................]

Partition #10
Usual content: dbdata.rfs
partition entry type: 0 0 (normal partition)
ID = 0x17;	flags = 0x2 (rfs file system);	unknown: 0
size = 348 blocks of 256 * 512 bytes = 45613056 B = 44544 kB = 43 MB
unknown string: [........]
partition name = [DBDATAFS........................]
file name = [dbdata.rfs......................................................]

Partition #11
Usual content: cache.rfs
partition entry type: 0 0 (normal partition)
ID = 0x18;	flags = 0x2 (rfs file system);	unknown: 0
size = 140 blocks of 256 * 512 bytes = 18350080 B = 17920 kB = 17 MB
unknown string: [........]
partition name = [CACHE...........................]
file name = [cache.rfs.......................................................]

Partition #12
Usual content: modem.bin
partition entry type: 0 0 (normal partition)
ID = 0x8;	flags = 0;	unknown: 0
size = 64 blocks of 256 * 512 bytes = 8388608 B = 8192 kB = 8 MB
unknown string: [........]
partition name = [MODEM...........................]
file name = [modem.bin.......................................................]

Partition #13
Usual content: Unknown
partition entry type: 0 2 (unknown value)
ID = 0;	flags = 0x1;	unknown: 0
size = 0 blocks of 0 * 512 bytes = 0 B = 0 kB = 0 MB
unknown string: [l.e. .(.]
partition name = [MOVINAND..)...*...p.i.t.........]
file name = [movinand.mst........D.:.\.2.4.....P.1.\.4... .S.M.D. .i.m.a.g.e.]

Partition #14
Usual content: Unknown
partition entry type: 0 2 (unknown value)
ID = 0x3;	flags = 0x1;	unknown: 0
size = 0 blocks of 0 * 512 bytes = 0 B = 0 kB = 0 MB
unknown string: [........]
partition name = [HIDDEN..........................]
file name = [hidden.rfs......................................................]

Partition #15
Usual content: Unknown
partition entry type: 1 1 (past-the-end marker)
ID = 0x8;	flags = 0;	unknown: 0
size = 0 blocks of 0 * 512 bytes = 0 B = 0 kB = 0 MB
unknown string: [..!.....]
partition name = [..!.@...........&.../.2.l.!.....]
file name = [....................\t.........".............P.I.T. .F.i.l.e. .(.]

In particular, note the differences between the Epic 4G and JMA modem entries:

Partition #12
Usual content: modem.bin
partition entry type: 0 0 (normal partition)
ID = 0xb;	flags = 0;	unknown: 0
size = 50 blocks of 256 * 512 bytes = 6553600 B = 6400 kB = 6 MB
unknown string: [........]
partition name = [MODEM...........................]
file name = [modem.bin.......................................................]

Partition #12
Usual content: modem.bin
partition entry type: 0 0 (normal partition)
ID = 0x8;	flags = 0;	unknown: 0
size = 64 blocks of 256 * 512 bytes = 8388608 B = 8192 kB = 8 MB
unknown string: [........]
partition name = [MODEM...........................]
file name = [modem.bin.......................................................]

Not sure how it plays in, but the IDs are different. All the other matching partitions seem to have same IDs.

Can someone dump their PIT file from the Sprint Tab?