linuxsat-support.com/cms/attachment/133531/
openvision-9.3-r72-dm520-20191223-original
https://mega.nz/#!1EURVCob!Aqi…7uc099XwestgzYzwivCtATxmo
openvision-9.3-r72-dm520-20191223-sim2.30
https://mega.nz/#!BVdhAKLb!Aqi…7uc099XwestgzYzwivCtATxmo
Please download attached file and unzip opkg.zip file,then upload and replace in /ect/opkg
attached file