hi
for Identify, analyzing and extracting firmware images use
binwalk
tut for binwalk from author blog http://www.devttys0.com/blog/ [ best blog in firmware reversing]
link will help you
http://www.zlotkus.com/2013/09/reverse-engineering-telergy-t501-iptv-set-top-box/
-----------------------------------------
-binwalk result will be like this-
-----------------------------------------
PHP Code:
DECIMAL HEX DESCRIPTION
-------------------------------------------------------------------------------------------------------
131584 0x20200 romfs filesystem, version 1 size: 210864 bytes, named YAMON_XLOAD.
393728 0x60200 romfs filesystem, version 1 size: 8042720 bytes, named MIPSLINUX_XLOAD.
393891 0x602A3 LZMA compressed data, properties: 0xA9, dictionary size: 33882112 bytes, uncompressed size: 8042532 bytes
8782336 0x860200 romfs filesystem, version 1 size: 8042720 bytes, named MIPSLINUX_XLOAD.
8782499 0x8602A3 LZMA compressed data, properties: 0xA9, dictionary size: 33882112 bytes, uncompressed size: 8042532 bytes
17170944 0x1060200 romfs filesystem, version 1 size: 2276400 bytes, named imaterial.
18373849 0x1185CD9 Windows CE RTOS
18373851 0x1185CDB Windows CE RTOS
18375770 0x118645A Windows CE RTOS
18375772 0x118645C Windows CE RTOS
19246092 0x125AC0C gzip compressed data, from Unix, DD-WRT date: Thu Jan 1 01:00:00 1970
19250569 0x125BD89 gzip compressed data, from Unix, DD-WRT date: Thu Jan 1 01:00:00 1970
19250940 0x125BEFC gzip compressed data, from Unix, DD-WRT date: Thu Jan 1 01:00:00 1970
19447294 0x128BDFE gzip compressed data, from Unix, DD-WRT date: Thu Jan 1 01:00:00 1970
19792384 0x12E0200 romfs filesystem, version 1 size: 144144 bytes, named xmaterial.
20054528 0x1320200 CramFS filesystem, little endian size 39141376 version #2 sorted_dirs CRC 0x4bd0995b, edition 0, 44794 blocks, 2005 files
41886683 0x27F23DB gzip compressed data, ASCII, extra field, has comment, comment, last modified: Thu Jul 24 16:42:19 2008
53363176 0x32E41E8 TROC filesystem, 852941726 file entries
57071804 0x366D8BC JFFS2 filesystem data big endian, JFFS node length: 339134