L3-5M-P is cannot connect on WiFi compatible mode in Ruijie and ZTE

L3-5M-P is cannot connect on WiFi.
I had try on ZTE set in 802.11b 2.4 G (Test)
And
Rujie RAP 220 set in compatible mode 2.4 G (Home)
Live chat of Ruijie are assisted to help but cannot solve problem
both of them won’t work .
fw 1000.2.1060
How flash new fw manually?
or any setting work?
or connect bluetooth bridge hub?