Sagem RM50 #11

Are those files really useful in a production firmware?

rootfs1/etc/network/interfaces.bak

rootfs1/usr/lib/alsa-lib/smixer/smixer-hda.la
rootfs1/usr/lib/alsa-lib/smixer/smixer-ac97.a
rootfs1/usr/lib/alsa-lib/smixer/smixer-ac97.la
rootfs1/usr/lib/alsa-lib/smixer/smixer-sbase.la
rootfs1/usr/lib/alsa-lib/smixer/smixer-hda.a
rootfs1/usr/lib/alsa-lib/smixer/smixer-sbase.a

rootfs1/usr/lib/pkgconfig/freetype2.pc

rootfs1/usr/include/readline/chardefs.h
rootfs1/usr/include/readline/tilde.h
rootfs1/usr/include/readline/history.h
rootfs1/usr/include/readline/rlstdc.h
rootfs1/usr/include/readline/keymaps.h
rootfs1/usr/include/readline/rltypedefs.h
rootfs1/usr/include/readline/readline.h
rootfs1/usr/include/readline/rlconf.h

rootfs1/usr/include/freetype2/freetype/ftwinfnt.h
rootfs1/usr/include/freetype2/freetype/ftmodapi.h
rootfs1/usr/include/freetype2/freetype/ftlist.h
rootfs1/usr/include/freetype2/freetype/ftgzip.h
rootfs1/usr/include/freetype2/freetype/fterrors.h
rootfs1/usr/include/freetype2/freetype/tttags.h
rootfs1/usr/include/freetype2/freetype/ftsizes.h
rootfs1/usr/include/freetype2/freetype/ttnameid.h
rootfs1/usr/include/freetype2/freetype/ftxf86.h
rootfs1/usr/include/freetype2/freetype/fttrigon.h
rootfs1/usr/include/freetype2/freetype/ftimage.h
rootfs1/usr/include/freetype2/freetype/ftsnames.h
rootfs1/usr/include/freetype2/freetype/ftsynth.h
rootfs1/usr/include/freetype2/freetype/ftbitmap.h
rootfs1/usr/include/freetype2/freetype/ftotval.h
rootfs1/usr/include/freetype2/freetype/ftchapters.h
rootfs1/usr/include/freetype2/freetype/ftbbox.h
rootfs1/usr/include/freetype2/freetype/ftmm.h
rootfs1/usr/include/freetype2/freetype/ftlzw.h
rootfs1/usr/include/freetype2/freetype/ftgxval.h
rootfs1/usr/include/freetype2/freetype/ftbdf.h
rootfs1/usr/include/freetype2/freetype/fterrdef.h
rootfs1/usr/include/freetype2/freetype/ftpfr.h
rootfs1/usr/include/freetype2/freetype/tttables.h
rootfs1/usr/include/freetype2/freetype/ftincrem.h

rootfs1/usr/include/freetype2/freetype/config/ftstdlib.h
rootfs1/usr/include/freetype2/freetype/config/ftheader.h
rootfs1/usr/include/freetype2/freetype/config/ftconfig.h
rootfs1/usr/include/freetype2/freetype/config/ftoption.h
rootfs1/usr/include/freetype2/freetype/config/ftmodule.h
rootfs1/usr/include/freetype2/freetype/ftmac.h
rootfs1/usr/include/freetype2/freetype/t1tables.h
rootfs1/usr/include/freetype2/freetype/freetype.h
rootfs1/usr/include/freetype2/freetype/ftstroke.h
rootfs1/usr/include/freetype2/freetype/fttypes.h
rootfs1/usr/include/freetype2/freetype/ftsystem.h
rootfs1/usr/include/freetype2/freetype/ftrender.h
rootfs1/usr/include/freetype2/freetype/ftoutln.h
rootfs1/usr/include/freetype2/freetype/ftcache.h
rootfs1/usr/include/freetype2/freetype/ttunpat.h
rootfs1/usr/include/freetype2/freetype/ftglyph.h
rootfs1/usr/include/freetype2/freetype/ftmoderr.h

rootfs1/usr/include/ft2build.h

rootfs1/usr/share/udhcpc/default.script

rootfs1/usr/share/aclocal/freetype2.m4

rootfs1/usr/share/alsa/cards/ICH4.conf
rootfs1/usr/share/alsa/cards/ENS1370.conf
rootfs1/usr/share/alsa/cards/aliases.alisp
rootfs1/usr/share/alsa/cards/CMI8338-SWIEC.conf
rootfs1/usr/share/alsa/cards/SI7018.conf
rootfs1/usr/share/alsa/cards/YMF744.conf
rootfs1/usr/share/alsa/cards/ICH.conf
rootfs1/usr/share/alsa/cards/FM801.conf
rootfs1/usr/share/alsa/cards/ENS1371.conf
rootfs1/usr/share/alsa/cards/CS46xx.conf
rootfs1/usr/share/alsa/cards/EMU10K1X.conf
rootfs1/usr/share/alsa/cards/RME9636.conf
rootfs1/usr/share/alsa/cards/RME9652.conf
rootfs1/usr/share/alsa/cards/PMac.conf
rootfs1/usr/share/alsa/cards/USB-Audio.conf
rootfs1/usr/share/alsa/cards/NFORCE.conf
rootfs1/usr/share/alsa/cards/aliases.conf
rootfs1/usr/share/alsa/cards/ATIIXP-MODEM.conf
rootfs1/usr/share/alsa/cards/PC-Speaker.conf
rootfs1/usr/share/alsa/cards/VXPocket.conf
rootfs1/usr/share/alsa/cards/Aureon71.conf
rootfs1/usr/share/alsa/cards/ES1968.conf
rootfs1/usr/share/alsa/cards/CMI8338.conf
rootfs1/usr/share/alsa/cards/ICH-MODEM.conf
rootfs1/usr/share/alsa/cards/AU8810.conf
rootfs1/usr/share/alsa/cards/AU8820.conf
rootfs1/usr/share/alsa/cards/VX222.conf
rootfs1/usr/share/alsa/cards/ATIIXP-SPDMA.conf
rootfs1/usr/share/alsa/cards/CMI8738-MC8.conf
rootfs1/usr/share/alsa/cards/VIA8233.conf
rootfs1/usr/share/alsa/cards/VXPocket440.conf
rootfs1/usr/share/alsa/cards/VIA8237.conf
rootfs1/usr/share/alsa/cards/Aureon51.conf
rootfs1/usr/share/alsa/cards/ICE1724.conf
rootfs1/usr/share/alsa/cards/VIA686A.conf
rootfs1/usr/share/alsa/cards/Maestro3.conf
rootfs1/usr/share/alsa/cards/ICE1712.conf
rootfs1/usr/share/alsa/cards/PMacToonie.conf
rootfs1/usr/share/alsa/cards/AU8830.conf
rootfs1/usr/share/alsa/cards/TRID4DWAVENX.conf
rootfs1/usr/share/alsa/cards/Audigy.conf
rootfs1/usr/share/alsa/cards/VIA8233A.conf
rootfs1/usr/share/alsa/cards/CA0106.conf
rootfs1/usr/share/alsa/cards/GUS.conf
rootfs1/usr/share/alsa/cards/AACI.conf
rootfs1/usr/share/alsa/cards/EMU10K1.conf
rootfs1/usr/share/alsa/cards/CMI8738-MC6.conf
rootfs1/usr/share/alsa/cards/SI7018
rootfs1/usr/share/alsa/cards/SI7018/sndop-mixer.alisp
rootfs1/usr/share/alsa/cards/SI7018/sndoc-mixer.alisp
rootfs1/usr/share/alsa/cards/Audigy2.conf
rootfs1/usr/share/alsa/cards/ATIIXP.conf
rootfs1/usr/share/alsa/cards/HDA-Intel.conf

rootfs1/usr/share/alsa/pcm/center_lfe.conf
rootfs1/usr/share/alsa/pcm/surround50.conf
rootfs1/usr/share/alsa/pcm/modem.conf
rootfs1/usr/share/alsa/pcm/rear.conf
rootfs1/usr/share/alsa/pcm/dsnoop.conf
rootfs1/usr/share/alsa/pcm/side.conf
rootfs1/usr/share/alsa/pcm/surround41.conf
rootfs1/usr/share/alsa/pcm/front.conf
rootfs1/usr/share/alsa/pcm/iec958.conf
rootfs1/usr/share/alsa/pcm/dmix.conf
rootfs1/usr/share/alsa/pcm/surround71.conf
rootfs1/usr/share/alsa/pcm/surround40.conf
rootfs1/usr/share/alsa/pcm/default.conf
rootfs1/usr/share/alsa/pcm/dpl.conf
rootfs1/usr/share/alsa/pcm/surround51.conf

Sagem RM50 #10

$ find rootfs1/usr/lib/ -maxdepth 1 -not -type l -not -type d

rootfs1/usr/lib/libssl.so.0.9.7

rootfs1/usr/lib/libsysfs.so.2.0.1

rootfs1/usr/lib/libasound.so.2.0.0

rootfs1/usr/lib/libdbus-1.so.3.4.0

rootfs1/usr/lib/libteaklite_ctrl.so

rootfs1/usr/lib/libexpat.so.1.5.2

rootfs1/usr/lib/libz.so.1.2.3

rootfs1/usr/lib/libplayer.so

rootfs1/usr/lib/libjpeg.so.62.0.0

rootfs1/usr/lib/libdbus-c++-1.so.0.0.0

rootfs1/usr/lib/libfreetype.so.6.3.10

rootfs1/usr/lib/libcrypto.so.0.9.7

rootfs1/usr/lib/libusbpp-0.1.so.4.4.4

rootfs1/usr/lib/libubootenv.so

rootfs1/usr/lib/libpng12.so.0.25.0

rootfs1/usr/lib/libfile2flash.so

rootfs1/usr/lib/libusb-0.1.so.4.4.4

rootfs1/usr/lib/libdspgspiritmp3wma.so

rootfs1/usr/lib/libmad.so.0.2.1

rootfs1/usr/lib/libplayer.so.0.0.1

Sagem RM50 #9

$ find rootfs1/usr/sbin/ -not -type l -not -type d

rootfs1/usr/sbin/nandwrite

rootfs1/usr/sbin/ubicrc32

rootfs1/usr/sbin/ubootenv

rootfs1/usr/sbin/pddcustomize

rootfs1/usr/sbin/unubi

rootfs1/usr/sbin/alsactl

rootfs1/usr/sbin/ubiattach

rootfs1/usr/sbin/ubicrc32.pl

rootfs1/usr/sbin/flash_lock

rootfs1/usr/sbin/mtd_debug

rootfs1/usr/sbin/sumtool

rootfs1/usr/sbin/ubiformat

rootfs1/usr/sbin/ubirmvol

rootfs1/usr/sbin/ubinfo

rootfs1/usr/sbin/racoon

rootfs1/usr/sbin/ubimkvol

rootfs1/usr/sbin/docfdisk

rootfs1/usr/sbin/nand2bin

rootfs1/usr/sbin/nftl_format

rootfs1/usr/sbin/ubigen

rootfs1/usr/sbin/plainrsa-gen

rootfs1/usr/sbin/pfiflash

rootfs1/usr/sbin/file2flash

rootfs1/usr/sbin/mtdinfo

rootfs1/usr/sbin/mkbootenv

rootfs1/usr/sbin/flash_info

rootfs1/usr/sbin/ubidetach

rootfs1/usr/sbin/ubimirror

rootfs1/usr/sbin/doc_loadbios

rootfs1/usr/sbin/flash_eraseall

rootfs1/usr/sbin/mkfs.jffs2

rootfs1/usr/sbin/ntpd

rootfs1/usr/sbin/setkey

rootfs1/usr/sbin/ubirename

rootfs1/usr/sbin/nanddump

rootfs1/usr/sbin/ubiupdatevol

rootfs1/usr/sbin/ftl_check

rootfs1/usr/sbin/flash_unlock

rootfs1/usr/sbin/bin2nand

rootfs1/usr/sbin/pfi2bin

rootfs1/usr/sbin/racoonctl

rootfs1/usr/sbin/flash_erase

rootfs1/usr/sbin/jffs2dump

rootfs1/usr/sbin/ftl_format

rootfs1/usr/sbin/nftldump

rootfs1/usr/sbin/flashcp

rootfs1/usr/sbin/ubinize

rootfs1/usr/sbin/mkfs.jffs

rootfs1/usr/sbin/mkpfi

rootfs1/usr/sbin/swupgrade

rootfs1/usr/sbin/dmtest

rootfs1/usr/sbin/xpndr-teaklite_ctrl_app

Sagem RM50 #8

$ find rootfs1/usr/bin/ -not -type l -not -type d

rootfs1/usr/bin/microperl

rootfs1/usr/bin/iostat

rootfs1/usr/bin/supplicant-console

rootfs1/usr/bin/ftp

rootfs1/usr/bin/smbmount

rootfs1/usr/bin/whois

rootfs1/usr/bin/sqlite3

rootfs1/usr/bin/dbus-daemon

rootfs1/usr/bin/mplayer

rootfs1/usr/bin/xpndr-dsploader

rootfs1/usr/bin/dbus-launch

rootfs1/usr/bin/logger

rootfs1/usr/bin/rlogin

rootfs1/usr/bin/telnet

rootfs1/usr/bin/test-player

rootfs1/usr/bin/memtester

rootfs1/usr/bin/supplicant-passprase

rootfs1/usr/bin/iperf

rootfs1/usr/bin/cjpeg

rootfs1/usr/bin/file

rootfs1/usr/bin/dbus-monitor

rootfs1/usr/bin/aplay

rootfs1/usr/bin/djpeg

rootfs1/usr/bin/tftp

rootfs1/usr/bin/xpndr-console

rootfs1/usr/bin/dialog

rootfs1/usr/bin/rcp

rootfs1/usr/bin/freetype-config

rootfs1/usr/bin/ping

rootfs1/usr/bin/wmdbussrv

rootfs1/usr/bin/dbus-uuidgen

rootfs1/usr/bin/alsamixer

rootfs1/usr/bin/smbmnt

rootfs1/usr/bin/ping6

rootfs1/usr/bin/dbus-cleanup-sockets

rootfs1/usr/bin/dmdbussrv

rootfs1/usr/bin/amixer

rootfs1/usr/bin/rsh

rootfs1/usr/bin/jpegtran

rootfs1/usr/bin/supplicant

rootfs1/usr/bin/smbumount

rootfs1/usr/bin/strace

rootfs1/usr/bin/dbus-send

Sagem RM50 #7

$ find rootfs1/lib/ -maxdepth 1 -not -type l -not -type d

rootfs1/lib/libnss_nisplus-2.3.6.so

rootfs1/lib/libcidn-2.3.6.so

rootfs1/lib/ld-2.3.6.so

rootfs1/lib/libreadline.so.5.1

rootfs1/lib/libm-2.3.6.so

rootfs1/lib/libanl-2.3.6.so

rootfs1/lib/libgcc_s.so.1

rootfs1/lib/libthread_db-1.0.so

rootfs1/lib/libpthread-2.3.6.so

rootfs1/lib/libcrypt-2.3.6.so

rootfs1/lib/libnss_hesiod-2.3.6.so

rootfs1/lib/libncurses.so.5.6

rootfs1/lib/libresolv-2.3.6.so

rootfs1/lib/libhistory.so.5.1

rootfs1/lib/libnss_nis-2.3.6.so

rootfs1/lib/libnss_files-2.3.6.so

rootfs1/lib/libnss_compat-2.3.6.so

rootfs1/lib/librt-2.3.6.so

rootfs1/lib/libnss_dns-2.3.6.so

rootfs1/lib/libdl-2.3.6.so

rootfs1/lib/libsqlite3-3.3.17.so.0.8.6

rootfs1/lib/libc-2.3.6.so

rootfs1/lib/libutil-2.3.6.so

rootfs1/lib/libBrokenLocale-2.3.6.so

rootfs1/lib/libstdc++.so.6.0.8

rootfs1/lib/libnsl-2.3.6.so

$ strings rootfs1/lib/libsqlite3-3.3.17.so.0.8.6 | grep -E "[0-9]\.[0-9]\.[0-9]{2}"

libsqlite3-3.3.17.so.0

3.3.17

SQLite 3.3.17

Sagem RM50 #6

$ find rootfs1/bin/ -not -type l -not -type d

rootfs1/bin/busybox

rootfs1/bin/lrz

rootfs1/bin/lsz

$ strings rootfs1/bin/busybox | grep -E "BusyBox v[0-9]\.[0-9]{1,2}\.[0-9]"

BusyBox v1.14.1 (2009-12-22 16:52:28 CST)

syslogd started: BusyBox v1.14.1

BusyBox 1.14.1
http://www.busybox.net/downloads/busybox-1.14.1.tar.bz2

$ strings rootfs1/bin/lrz | grep -E "[0-9]{1}\.[0-9]{2}\.[0-9]{2}"

0.12.20

$ strings rootfs1/bin/lsz | grep -E "[0-9]{1}\.[0-9]{2}\.[0-9]{2}"

0.12.20

lrzsz 0.12.20
http://www.ohse.de/uwe/releases/lrzsz-0.12.20.tar.gz

Sagem RM50 #5

$ strings u-boot-RM50-YD3-V0.40-E-20101108-182755.img0 | grep -E "20[0-9]{2}\.[0-9]{2}"

U-Boot dw 4.05 2009.03 (Nov 08 2010 - 18:46:06)

U-Boot 2009.03
ftp://ftp.denx.de/pub/u-boot/u-boot-2009.03.tar.bz2

Sagem RM50 #4

$ sudo aptitude install sqlite3

$ sqlite3 -line rootfs1/etc/syssettings/syssettings.sqlite '.table'

BINARY_TYPE INTEGER_TYPE PLAIN_TABLE STRING_TYPE

$ sqlite3 -line rootfs1/etc/syssettings/syssettings.sqlite 'select * from PLAIN_TABLE'

ID = 2

GROUP_NAME = WifiMgr

KEY_NAME = CountryCodeSettings

TYPE = 0

ID = 3

GROUP_NAME = WifiMgr

KEY_NAME = LastAutoConnectValue

TYPE = 0

ID = 4

GROUP_NAME = wifimgr

KEY_NAME = uuid_e

TYPE = 1

ID = 5

GROUP_NAME = RfCalib_RegistersByBand

KEY_NAME = RegistersList

TYPE = 1

ID = 6

GROUP_NAME = RfCalib_RegistersByBand

KEY_NAME = Reg294

TYPE = 1

ID = 7

GROUP_NAME = RfCalib_RegistersByBand

KEY_NAME = Reg65

TYPE = 1

ID = 8

GROUP_NAME = RfCalib_RegistersByBand

KEY_NAME = Reg74

TYPE = 1

ID = 9

GROUP_NAME = RfCalib_RegistersByChannel24

KEY_NAME = RegistersList

TYPE = 1

ID = 10

GROUP_NAME = RfCalib_RegistersByChannel24

KEY_NAME = Reg340

TYPE = 1

ID = 11

GROUP_NAME = WifiMgr

KEY_NAME = WmDBusType

TYPE = 0

ID = 12

GROUP_NAME = RfCalib_RegistersByBand

KEY_NAME = Reg351

TYPE = 1

ID = 13

GROUP_NAME = RfCalib_RegistersByBand

KEY_NAME = Reg3

TYPE = 1

Sagem RM50 #3

$ cat rootfs1/.version

RM50-YD3-V0.40-E

20101108-182755

$ cat rootfs1/etc/fstab

# /etc/fstab: static file system information.

#

#
proc /proc proc defaults 0 0
tmpfs /tmp tmpfs defaults 0 0
tmpfs /mnt tmpfs defaults 0 0
sysfs /sys sysfs defaults 0 0
devpts /dev/pts devpts defaults,gid=5,mode=620 0 0

$ cat rootfs1/etc/inetd.conf
telnet stream tcp nowait root /usr/sbin/telnetd telnetd -i

$ cat rootfs1/etc/issue


Welcome to the DSPG DW Platform development environment.

$ cat rootfs1/etc/ld.so.conf
/lib
/usr/lib
/opt/Qtopia-4.4.2-release/lib
/opt/Qtopia-4.4.2-release/qt_plugins
/opt/Qtopia-4.4.2-release/plugins
/opt/Qtopia-4.2.1-release/lib

$ cat rootfs1/etc/resolv.conf
search expedio.dspg
nameserver 172.19.35.1
nameserver 194.90.1.5
nameserver 212.143.212.143

Sagem RM50 #2

$ sudo unsquashfs -d rootfs1 rootfs1.squashfs-RM50-YD3-V0.40-E-20101108-182755.img2

Parallel unsquashfs: Using 4 processors

1424 inodes (1772 blocks) to write

[===========================================================================================================-] 1772/1772 100%

created 960 files

created 116 directories

created 273 symlinks

created 191 devices

created 0 fifos

$ sudo unsquashfs -d rootfs2 rootfs2.squashfs-RM50-YD3-V0.40-E-20101108-182755.img3

Parallel unsquashfs: Using 4 processors

123 inodes (686 blocks) to write

[=============================================================================================================/] 686/686 100%

created 119 files

created 15 directories

created 4 symlinks

created 0 devices

created 0 fifos

squashfs-tools

$ aptitude show squashfs-tools

Package: squashfs-tools

New: yes

State: installed

Automatically installed: no

Version: 1:4.1-3

Priority: optional

Section: kernel

Maintainer: Daniel Baumann
Uncompressed Size: 344 k
Depends: libc6 (>= 2.3.4), liblzma2 (>= 4.999.9beta+20091116), liblzo2-2, zlib1g (>= 1:1.1.4)
Description: Tool to create and append to squashfs filesystems
Squashfs is a highly compressed read-only filesystem for Linux. It uses zlib compression to compress both files, inodes and
directories. Inodes in the system are very small and all blocks are packed to minimise data overhead. Block sizes greater
than 4K are supported up to a maximum of 64K.

Squashfs is intended for general read-only filesystem use, for archival use (i.e. in cases where a .tar.gz file may be used),
and in constrained block device/memory systems (e.g. embedded systems) where low overhead is needed.
Homepage: http://squashfs.sourceforge.net/

$ sudo aptitude install squashfs-tools

$ dpkg -L squashfs-tools

/.

/usr

/usr/bin

/usr/bin/mksquashfs

/usr/bin/unsquashfs

/usr/share

/usr/share/doc

/usr/share/doc/squashfs-tools

/usr/share/doc/squashfs-tools/README.gz

/usr/share/doc/squashfs-tools/DONATIONS

/usr/share/doc/squashfs-tools/copyright

/usr/share/doc/squashfs-tools/PERFORMANCE.README.gz

/usr/share/doc/squashfs-tools/OLD-READMEs

/usr/share/doc/squashfs-tools/OLD-READMEs/README-3.2

/usr/share/doc/squashfs-tools/OLD-READMEs/README-3.3.gz

/usr/share/doc/squashfs-tools/OLD-READMEs/README-4.0

/usr/share/doc/squashfs-tools/OLD-READMEs/README-3.1.gz

/usr/share/doc/squashfs-tools/OLD-READMEs/README-2.1

/usr/share/doc/squashfs-tools/OLD-READMEs/README-2.0.gz

/usr/share/doc/squashfs-tools/OLD-READMEs/README-3.0

/usr/share/doc/squashfs-tools/OLD-READMEs/README-AMD64

/usr/share/doc/squashfs-tools/changelog.Debian.gz

/usr/share/doc/squashfs-tools/ACKNOWLEDGEMENTS.gz

/usr/share/doc/squashfs-tools/README-4.1.gz

/usr/share/doc/squashfs-tools/examples

/usr/share/doc/squashfs-tools/examples/pseudo-file.example

/usr/share/doc/squashfs-tools/changelog.gz

/usr/share/man

/usr/share/man/man1

/usr/share/man/man1/unsquashfs.1.gz

/usr/share/man/man1/mksquashfs.1.gz

Sagem RM50 #1

$ wget http://support.sagemcom.com/site/driver/RM50%201117.rar

$ unrar x RM50\ 1117.rar

UNRAR 4.00 beta 3 freeware Copyright (c) 1993-2010 Alexander Roshal


Extracting from RM50 1117.rar

Extracting zImage-RM50-YD3-V0.40-E-20101108-182755.img1 OK
Extracting rootfs1.squashfs-RM50-YD3-V0.40-E-20101108-182755.img2 OK
Extracting rootfs2.squashfs-RM50-YD3-V0.40-E-20101108-182755.img3 OK
Extracting u-boot-RM50-YD3-V0.40-E-20101108-182755.img0 OK
All OK

$ file rootfs1.squashfs-RM50-YD3-V0.40-E-20101108-182755.img2
rootfs1.squashfs-RM50-YD3-V0.40-E-20101108-182755.img2: Squashfs filesystem, little endian, version 3.0, 11863851 bytes, 1540 inodes, blocksize: 65536 bytes, created: Mon Nov 8 13:09:00 2010

$ file rootfs2.squashfs-RM50-YD3-V0.40-E-20101108-182755.img3
rootfs2.squashfs-RM50-YD3-V0.40-E-20101108-182755.img3: Squashfs filesystem, little endian, version 3.0, 14278764 bytes, 138 inodes, blocksize: 65536 bytes, created: Mon Nov 8 13:09:03 2010

$ file u-boot-RM50-YD3-V0.40-E-20101108-182755.img0
u-boot-RM50-YD3-V0.40-E-20101108-182755.img0: data

$ file zImage-RM50-YD3-V0.40-E-20101108-182755.img1
zImage-RM50-YD3-V0.40-E-20101108-182755.img1: data