thank u for the hints and finally i got the s/w and succeeded !search 4 "x02.55.01_ECHOLINK7020HD_IRDETO2_DEB_ERSIN70.rar"
and be happy with original "ECHOLINK"-bootloader! :clapping:
do you need to update a biss key or to add a new one:-hi please help me for biss or dcw code on el-7020 thanks