[OnePlus X Original Android Development] iFrodo:
Are you sure you flashed 20160229 build not 20160222?

Here my logical log when connecting to my Freebox mini 4k 802.11n network:

03-01 08:54:48.034 1005 1843 E WiFiServiceImpl : SAVE nid=0 uid=1000 name=android.uid.system:1000
03-01 08:54:48.034 1005 1843 D WifiService: Connect with config* ID: -1 SSID: "iFrodoFree" PROVIDER-NAME: null BSSID: null FQDN: null PRIO: 0
03-01 08:54:48.034 1005 1843 D WifiService: KeyMgmt: WPA_PSK Protocols:
03-01 08:54:48.034 1005 1843 D WifiService: AuthAlgorithms:
03-01 08:54:48.034 1005 1843 D WifiService: PairwiseCiphers:
03-01 08:54:48.034 1005 1843 D WifiService: GroupCiphers:
03-01 08:54:48.034 1005 1843 D WifiService: PSK: *
03-01 08:54:48.034 1005 1843 D WifiService: sim_num
03-01 08:54:48.034 1005 1843 D WifiService: Enterprise config:
03-01 08:54:48.034 1005 1843 D WifiService: IP config:
03-01 08:54:48.034 1005 1843 D WifiService: IP assignment: DHCP
03-01 08:54:48.034 1005 1843 D WifiService: Proxy settings: NONE
03-01 08:54:48.034 1005 1843 D WifiService: cuid=-1 luid=-1 lcuid=0 userApproved=USER_UNSPECIFIED noInternetAccessExpected=false roamingFailureBlackListTimeMilli: 1000
03-01 08:54:48.034 1005 1843 D WifiService: triggeredLow: 0 triggeredBad: 0 triggeredNotHigh: 0
03-01 08:54:48.034 1005 1843 D WifiService: ticksLow: 0 ticksBad: 0 ticksNotHigh: 0
03-01 08:54:48.034 1005 1843 D WifiService: triggeredJoin: 0
03-01 08:54:48.034 1005 1843 D WifiService: autoJoinBailedDueToLowRssi: false
03-01 08:54:48.034 1005 1843 D WifiService: autoJoinUseAggressiveJoinAttemptThreshold: 0
03-01 08:54:48.035 1005 1842 D WifiStateMachine: SAVE_NETWORK id=-1 config="iFrodoFree" nid=-1 supstate=ScanState my state DisconnectedState
03-01 08:54:48.036 1005 1843 E WiFiServiceImpl : CONNECT nid=-1 uid=1000 name=android.uid.system:1000
03-01 08:54:48.036 1005 1843 D WifiService: Connect with config* ID: -1 SSID: "iFrodoFree" PROVIDER-NAME: null BSSID: null FQDN: null PRIO: 0
03-01 08:54:48.036 1005 1843 D WifiService: KeyMgmt: WPA_PSK Protocols:
03-01 08:54:48.036 1005 1843 D WifiService: AuthAlgorithms:
03-01 08:54:48.036 1005 1843 D WifiService: PairwiseCiphers:
03-01 08:54:48.036 1005 1843 D WifiService: GroupCiphers:
03-01 08:54:48.036 1005 1843 D WifiService: PSK: *
03-01 08:54:48.036 1005 1843 D WifiService: sim_num
03-01 08:54:48.036 1005 1843 D WifiService: Enterprise config:
03-01 08:54:48.036 1005 1843 D WifiService: IP config:
03-01 08:54:48.036 1005 1843 D WifiService: IP assignment: DHCP
03-01 08:54:48.036 1005 1843 D WifiService: Proxy settings: NONE
03-01 08:54:48.036 1005 1843 D WifiService: cuid=-1 luid=-1 lcuid=0 userApproved=USER_UNSPECIFIED noInternetAccessExpected=false roamingFailureBlackListTimeMilli: 1000
03-01 08:54:48.036 1005 1843 D WifiService: triggeredLow: 0 triggeredBad: 0 triggeredNotHigh: 0
03-01 08:54:48.036 1005 1843 D WifiService: ticksLow: 0 ticksBad: 0 ticksNotHigh: 0
03-01 08:54:48.036 1005 1843 D WifiService: triggeredJoin: 0
03-01 08:54:48.036 1005 1843 D WifiService: autoJoinBailedDueToLowRssi: false
03-01 08:54:48.036 1005 1843 D WifiService: autoJoinUseAggressiveJoinAttemptThreshold: 0
03-01 08:54:48.037 1005 1842 E WifiConfigStore: addOrUpdateNetworkNative created netId=0
03-01 08:54:48.037 1005 1842 E wifi_gbk2utf: g_pItemList is NULL
03-01 08:54:48.038 1005 1842 E wifi_gbk2utf: g_pItemList is NULL
03-01 08:54:48.041 1005 1842 E wifi_gbk2utf: g_pItemList is NULL
03-01 08:54:48.094 1005 1842 E wifi_gbk2utf: g_pItemList is NULL
03-01 08:54:48.094 1005 1842 D WifiConfigStore: created new config netId=0 uid=1000 name=android.uid.system:1000
03-01 08:54:48.112 1005 1842 E WifiConfigStore: rewrite network history for "iFrodoFree"-WPA_PSK
03-01 08:54:48.115 4258 4258 I wpa_supplicant: wlan0: Trying to associate with SSID 'iFrodoFree'
03-01 08:54:48.136 1005 1842 D WifiAutoJoinController : updateConfigurationHistory found 0 networks
03-01 08:54:48.137 1005 1842 D WifiAutoJoinController : updateConfigurationHistory try to connect to an old network!! : "iFrodoFree"-WPA_PSK
03-01 08:54:48.137 1005 1842 E WifiConfigStore: rewrite network history for "iFrodoFree"-WPA_PSK
03-01 08:54:48.140 1005 1842 D WifiStateMachine: CONNECT_NETWORK updating existing config with id=0 configKey="iFrodoFree"-WPA_PSK
03-01 08:54:48.174 1005 1842 D WifiStateMachine: CONNECT_NETWORK id=0 config="iFrodoFree" cnid=0 supstate=ScanState my state DisconnectedState uid = 1000
03-01 08:54:48.175 1005 1842 E WifiConfigStore: saveWifiConfigBSSID Setting BSSID for "iFrodoFree"-WPA_PSK to any
03-01 08:54:48.175 1005 1842 E wifi_gbk2utf: g_pItemList is NULL
03-01 08:54:48.180 1005 1842 E WifiConfigStore: saveWifiConfigBSSID Setting BSSID for "iFrodoFree"-WPA_PSK to any
03-01 08:54:48.180 1005 1842 E wifi_gbk2utf: g_pItemList is NULL
03-01 08:54:48.186 1005 1842 D WifiAutoJoinController : updateConfigurationHistory found 0 networks
03-01 08:54:48.186 1005 1842 D WifiAutoJoinController : updateConfigurationHistory try to connect to an old network!! : "iFrodoFree"-WPA_PSK
03-01 08:54:48.187 1005 1842 E WifiConfigStore: rewrite network history for "iFrodoFree"-WPA_PSK
03-01 08:54:48.189 1005 1842 E wifi_gbk2utf: g_pItemList is NULL
03-01 08:54:48.189 1005 1842 E WifiConfigStore: buildPnoList sortedWifiConfigurations size 1
03-01 08:54:48.189 1005 1842 E WifiConfigStore: found sortedWifiConfigurations : "iFrodoFree"-WPA_PSK
03-01 08:54:48.195 1005 1842 E WifiConfigStore: rewrite network history for "iFrodoFree"-WPA_PSK
03-01 08:54:49.244 4258 4258 I wpa_supplicant: wlan0: CTRL-EVENT-ASSOC-REJECT bssid=14:0c:76:b4:fc:2d status_code=1
03-01 08:54:49.244 4258 4258 I wpa_supplicant: wlan0: CTRL-EVENT-SSID-TEMP-DISABLED id=0 ssid="iFrodoFree" auth_failures=1 duration=10 reason=CONN_FAILED
03-01 08:54:49.250 1005 1842 D WifiStateMachine: ConnectModeState SSID state=temp-disabled nid=0 [id=0 ssid="iFrodoFree" auth_failures=1 duration=10 reason=CONN_FAILED]
03-01 08:54:49.250 1005 1842 E WifiConfigStore: SSID temp disabled for "iFrodoFree"-WPA_PSK had autoJoinStatus=0 self added false ephemeral false
03-01 08:54:49.250 1005 1842 E WifiConfigStore: message=id=0 ssid="iFrodoFree" auth_failures=1 duration=10 reason=CONN_FAILED

To solve the issue, I even tried to flash back latest OxygenOS (2.2.0-x) and boot it fully to make sure I got the latest hardware firmwares updates, but no luck whenever I flash CM13 20160229 build, WiFi doesn't work.