HL7800 FOTA commands not working

I saw your comment in the post below

you got
at+wdss=1,1
OK

+WDSI: 4

+WDSI: 5

+WDSI: 7

+WDSI: 8

So what exact value you got when trying WDSS=1,1? Please help to choice one topic and discuss on it for the problem
Thanks