$> binwalk -e wr741ndv4_ru_3_13_2_up_boot(140521).bin

$ls
120200.squashfs  20400  20400.7z  3CEC  3CEC.7z  squashfs-root  unsquashfs

$> ./unsquashfs -v
unsquashfs version 4.2 (2011/02/28)

$> ./unsquashfs -h
SYNTAX: ./unsquashfs [options] filesystem [directories or files to extract]
[...]
Decompressors available:
gzip
lzma

$> ./unsquashfs 120200.squashfs
Parallel unsquashfs: Using 1 processor
lzma uncompress failed with error code 9
read_block: failed to read block @0x23d12a
read_fragment_table: failed to read fragment table index
FATAL ERROR aborting: failed to read fragment table