Using Binwalk to analyze update firmware (need a help) #908
Description
I'm not entirely sure about the results of the analysis of the file provided for the Roland V-synth-GT_2.0 update.
I know that for CPU architecture analysis data is:
- Renesas SH-4A
- Little Endian
- 2 or slightly more compressed bin blocks in the firmware.
It's possible that a decompressor was used in the boot code using lempel-ziv with 4kbytes, but I'm not 100% sure. Since, according to the historical analogy of the Roland firmwares issues founded, usaly all compressed binaries are also wrapped in a file with an additional header and checksums, witch i cant found outed.
I'm also confused by the large number of small files listed after executing the binwalk. Moreover, all the lower code-addresses that interest me in this file-report are missing (from 0x00 up to 0x051800):
% binwalk -a vsynth_gt.bin
what can to do for proper analyzing & decompression of binary file?
or any ideas for reach ready for further work with deassembling by IDA?