from 4.4.3 to 5.0.2 sense Wifi can't turn on

sorry guys,i do the search,but i didn't get anything like my case
here're my problem

i come from 4.4.3 rom, i'dont know how many firmware i've missed before 4.24.709.2
but i only flash a firmware 4.24.709.2
and now i'm having problem using 5.0.x with no wifi and hotspot,the wifi just won't turn on

i'm only s-on, so i can't flash back the firmware

i don't know what to do now

HBOOT-3.19.0.000
RADIO-1.26.21331147A1.16G
OS-4.24.709.2
TWRP-2.8.7.0

thanks to you guys :)