Have you guys ever heard of BINWALK?
You can install it with apt command in linux (ubuntu)
here is a preview of the file... Look's like there a few RBF Files in the Data file.
WARNING lots of output!!!!
CLI> binwalk BF561_External_Memory_Dump_0x20.dat
DECIMAL HEXADECIMAL DESCRIPTION
--------------------------------------------------------------------------------
133408 0x20920 CRC32 polynomial table, little endian
262208 0x40040 ELF, 32-bit LSB executable, version 1 (SYSV)
793212 0xC1A7C CRC32 polynomial table, little endian
844576 0xCE320 CRC32 polynomial table, little endian
848672 0xCF320 CRC32 polynomial table, big endian
855611 0xD0E3B Copyright string: "Copyright 1995-2013 Mark Adler "
860378 0xD20DA Zlib compressed data, best compression
861534 0xD255E Zlib compressed data, best compression
861940 0xD26F4 Zlib compressed data, best compression
863829 0xD2E55 Zlib compressed data, best compression
869236 0xD4374 GIF image data, version "89a", 1024 x 55
869591 0xD44D7 GIF image data, version "89a", 1 x 1
869626 0xD44FA GIF image data, version "89a", 1 x 1
869661 0xD451D GIF image data, version "89a", 153 x 116
Lots of Images...
Below looks like a RBF file..
1103844 0x10D7E4 Zip archive data, at least v2.0 to extract, compressed size: 229047, uncompressed size: 446341, name: MC_RMxV02.rbf
1332962 0x1456E2 Zip archive data, at least v2.0 to extract, compressed size: 2127, uncompressed size: 7832, name: rs_sz13.hft
1335158 0x145F76 Zip archive data, at least v2.0 to extract, compressed size: 2119, uncompressed size: 7833, name: rs_sz13b.hft
1337347 0x146803 Zip archive data, at least v2.0 to extract, compressed size: 1573, uncompressed size: 7761, name: rs_sz13m.hft
1338990 0x146E6E Zip archive data, at least v2.0 to extract, compressed size: 2289, uncompressed size: 8852, name: rs_sz15.hft
1341348 0x1477A4 Zip archive data, at least v2.0 to extract, compressed size: 2496, uncompressed size: 8821, name: rs_sz15b.hft
1343914 0x1481AA Zip archive data, at least v2.0 to extract, compressed size: 4060, uncompressed size: 15452, name: rs_sz25.hft
1348043 0x1491CB Zip archive data, at least v2.0 to extract, compressed size: 4109, uncompressed size: 23353, name: rs_sz25m.hft
1352222 0x14A21E Zip archive data, at least v2.0 to extract, compressed size: 4862, uncompressed size: 22984, name: rs_sz30.hft
1357153 0x14B561 Zip archive data, at least v2.0 to extract, compressed size: 4956, uncompressed size: 27425, name: rs_sz30m.hft
1362996 0x14CC34 End of Zip archive
4456512 0x440040 ELF, 32-bit LSB executable, version 1 (SYSV)
8412523 0x805D6B mcrypt 2.2 encrypted data, algorithm: blowfish-448, mode: CBC, keymode: 8bit
8412795 0x805E7B mcrypt 2.2 encrypted data, algorithm: blowfish-448, mode: CBC, keymode: 8bit
More RBF's files.... Further Down..
36364532 0x22AE0F4 PC bitmap, Windows 3.x format,, 1024 x 768 x 4
36401706 0x22B722A PC bitmap, Windows 3.x format,, 1024 x 768 x 4
36450492 0x22C30BC PC bitmap, Windows 3.x format,, 1024 x 768 x 4
36712252 0x2302F3C PNG image, 323 x 207, 8-bit/color RGB, non-interlaced
36712314 0x2302F7A Zlib compressed data, compressed
36894980 0x232F904 Zip archive data, at least v2.0 to extract, compressed size: 3398244, uncompressed size: 5549056, name: 2G5RM500.rbf
40293294 0x266D3AE Zip archive data, at least v2.0 to extract, compressed size: 232260, uncompressed size: 447796, name: MC_RMxV02.rbf
40525625 0x26A5F39 Zip archive data, at least v2.0 to extract, compressed size: 2525, uncompressed size: 14259, name: hm_7segment_25.hft
40528226 0x26A6962 Zip archive data, at least v2.0 to extract, compressed size: 2578, uncompressed size: 17987, name: hm_7segment_33.hft
40530880 0x26A73C0 Zip archive data, at least v2.0 to extract, compressed size: 2636, uncompressed size: 21715, name: hm_7segment_41.hft
40533592 0x26A7E58 Zip archive data, at least v2.0 to extract, compressed size: 671222, uncompressed size: 1736498, name: rs_chin15.hft
41204885 0x274BC95 Zip archive data, at least v2.0 to extract, compressed size: 671531, uncompressed size: 1736739, name: rs_chin15b.hft
Anyway... you get the idea...
Hope this helps???
Thanks.
Mike K