Searched around and still cannot solve the wifi issue.
lspci -nn | grep 0280
shows
03:00.0 Network controller [0280]: Broadcom Corporation Device [14e4:43ba] (rev 01)
I installed bcmwl-kernel-source
and also copied brcmfmac43602-prie.bin
to /lib/firmware/brcm/
folder. Doesn't solve the issue. I tried removed the bcmwl-kernel-source
package but still no wifi.