as a unix person, the fastest and simply way is use below information
then recompile ssdv version from gr_satellites author
look at ssdv.c
replace:
#define CRC32_DSLWP_MAGIC_VALUE 0x4EE4FDE1
with
#define CRC32_DSLWP_MAGIC_VALUE 0x6AAAC1C5
run
make
replace your /usr/bin/ssdv with this new one
and repeat previous step..
and voila we got it!