I am trying to unpack a clear spot firmware update
The firmware I am trying to reverse can be found on the download page of the vendor I have used the fwtools to unpack the firmware as described on this page.
After I did this, I managed to get a "kernel.bin" and a "rootfs.bin". Now I want to include a new/additional certificate to this modem and make some edits on the administrator page that is within this modem (a Wimax one).
So I checked the rootfs file using the file tool. And I got the following output:
rootfs.bin: Linux Compressed ROM File System data, little endian size 4280320 version #2 sorted_dirs CRC 0xbf224100, edition 16777728, 268441607 blocks, 1325400384 files
This was no to little help so I gave binwalk a try and I got this:
DECIMAL HEX DESCRIPTION
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14944 0x3A60 LZMA compressed data, properties: 0x6D, dictionary size: 8388608 bytes, uncompressed size: -1 bytes
855040 0xD0C00 Squashfs filesystem, big endian, version 2.1, size: 4276396 bytes, 1028 inodes, blocksize: 65536 bytes, created: Fri Jun 22 23:02:36 2012
As this did stoke me as odd I didn't continue. I don't know how to unpack the firmware. I think I have tried about everything I know you can do manually, firmware mod fit, fwtools, the whole lot!
Can someone shed some light on my issue and tell me how to continue?
and another question , if i replaced the "rootfs.bin" with another one extracted from firmware update for another device and another company , it will work if i recompress the "kernel.bin" and the new "rootfs.bin" and update the clear device with the new update ?
