use "kextutil -v 6" instead of "kextload", you will get more information about why it failed.
Defaulting to kernel file '/System/Library/Kernels/kernel'
Kext with invalid signature (-67030) allowed: <OSKext 0x7fe05f514e50 [0x7fff98901b00]> { URL = "file:///Users/chamikaashen/Desktop/AppleIntelWiFi.kext/", ID = "com.zhong.AppleIntelWiFi" }
Code Signing Failure: code signature is invalid
/Users/chamikaashen/Desktop/AppleIntelWiFi.kext appears to be loadable (not including linkage for on-disk libraries).
Loading /Users/chamikaashen/Desktop/AppleIntelWiFi.kext.
Disabling KextAudit: SIP is off
KextAudit initialized: audit=F
(kernel) kxld[com.zhong.AppleIntelWiFi]: The super class vtable '__ZTV17IO80211Controller' for vtable '__ZTV14AppleIntelWiFi' is out of date. Make sure your kext has been built against the correct headers.
(kernel) kxld[com.zhong.AppleIntelWiFi]: The super class vtable '__ZTV17IO80211Controller' for vtable '__ZTV14AppleIntelWiFi' is out of date. Make sure your kext has been built against the correct headers.
(kernel) Can't load kext com.zhong.AppleIntelWiFi - link failed.
(kernel) Failed to load executable for kext com.zhong.AppleIntelWiFi.
(kernel) Kext com.zhong.AppleIntelWiFi failed to load (0xdc008016).
(kernel) Failed to load kext com.zhong.AppleIntelWiFi (error 0xdc008016).
Failed to load /Users/chamikaashen/Desktop/AppleIntelWiFi.kext - (libkern/kext) link error.
Failed to load /Users/chamikaashen/Desktop/AppleIntelWiFi.kext - (libkern/kext) link error.
Check library declarations for your kext with kextlibs(8).
bro coming this code after running