Thank You for your reply..It's really appreciated.
Problem is i have upgraded from 184.108.40.206.102 to 9.3.4 , i forgot to choose restore the old configuration during upgrading .i have an configuration backup, ZD will not allow restore the old config.i thing it doesn't support the current firmware.
I want to refer my old configuration . i have started downgrade my ZD from 9.3.4 to 9.0.0.
1.[220.127.116.11.21] to [18.104.22.168.17] downgrade succeed
2.[22.214.171.124.17] to [126.96.36.199.15] downgrade succeed
3. [188.8.131.52.15] to [184.108.40.206.3] unable to downgrade due to downgrade package is applicable to (220.127.116.11,18.104.22.168,22.214.171.124,126.96.36.199,188.8.131.52,184.108.40.206,220.127.116.11)
I need your help to fix this issue.