One of the biggest plus in my book was that the device ARMv6 (mediatek) based, running Linux 2.6.27 kernel with a DirectFB and Qt. Firmware to play with here and available sources here.
binwalk:ing the firmware data file gives:
DECIMAL HEX DESCRIPTION
-------------------------------------------------------------------------------------------------------
67512 0x107B8 Mediatek bootloader
67897 0x10939 LZMA compressed data, properties: 0x80, dictionary size: 1073741824 bytes, uncompressed size: 196608 bytes
114580 0x1BF94 Mediatek bootloader
300220 0x494BC JFFS2 filesystem data little endian, JFFS node length: 8195
417804 0x6600C LZMA compressed data, properties: 0x90, dictionary size: 738197504 bytes, uncompressed size: 754973620 bytes
430796 0x692CC JFFS2 filesystem (old) data little endian, JFFS node length: 344
441485 0x6BC8D LZMA compressed data, properties: 0x5D, dictionary size: 1036255232 bytes, uncompressed size: 327678 bytes
447129 0x6D299 LZMA compressed data, properties: 0x02, dictionary size: 8388608 bytes, uncompressed size: 1073741824 bytes
447153 0x6D2B1 LZMA compressed data, properties: 0x02, dictionary size: 8388608 bytes, uncompressed size: 1073741824 bytes
447177 0x6D2C9 LZMA compressed data, properties: 0x02, dictionary size: 8388608 bytes, uncompressed size: 1073741824 bytes
450404 0x6DF64 LZMA compressed data, properties: 0x80, dictionary size: 1660944384 bytes, uncompressed size: 521134 bytes
461744 0x70BB0 uImage header, header size: 64 bytes, header CRC: 0x775F4C1C, created: Wed Oct 24 10:43:23 2012, image size: 1573204 bytes, Data Address: 0xDA00000, Entry Point: 0xDA00000, data CRC: 0x782925E7, OS: Linux, CPU: ARM, image type: OS Kernel Image, compression type: none, image name:
479272 0x75028 gzip compressed data, from Unix, last modified: Wed Oct 24 10:38:55 2012, max compression
2574912 0x274A40 Squashfs filesystem, little endian, version 3.1, size: 59779047 bytes, 471 inodes, blocksize: 131072 bytes, created: Wed Oct 24 10:51:11 2012
33020448 0x1F7DA20 JFFS2 filesystem data big endian, JFFS node length: 503796
35336806 0x21B3266 PNG image, 91 x 88, 8-bit/color RGBA, non-interlaced
35439823 0x21CC4CF PNG image, 97 x 88, 8-bit/color RGBA, non-interlaced
35516856 0x21DF1B8 PNG image, 168 x 161, 8-bit/color RGBA, non-interlaced
52281361 0x31DC011 gzip compressed data, has CRC, was "\031\202\273\253M\021\334\335\276\207\340\356\1771\014@\356\376\013{\023r\367}t\027\271;\005k\026\271\273\027R\034r\367\351\011\202\273\237`\211\221\273\267`\035#w7B\227\220\273\327\025\027\334}\003", last modified: Thu Sep 6 02:46:23 2029
62487104 0x3B97A40 PNG image, 1920 x 1080, 8-bit/color RGB, non-interlaced
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