diff --git a/os_dep/linux/wifi_regd.c b/os_dep/linux/wifi_regd.c
index 26b83cd..6956ae1 100644
--- a/os_dep/linux/wifi_regd.c
+++ b/os_dep/linux/wifi_regd.c
@@ -53,26 +53,26 @@ static struct country_code_to_enum_rd allCountries[] = {
 
 /* 5G chan 36 - chan 64 */
 #define RTW_5GHZ_5150_5350	\
-	REG_RULE(5150-10, 5350+10, 40, 0, 30,	\
-		 NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS)
+	REG_RULE(5150-10, 5350+10, 80, 0, 30,	\
+	NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS)
 
 /* 5G chan 100 - chan 165 */
 #define RTW_5GHZ_5470_5850	\
-	REG_RULE(5470-10, 5850+10, 40, 0, 30, \
-		 NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS)
+	REG_RULE(5470-10, 5850+10, 80, 0, 30, \
+	 NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS)
 
 /* 5G chan 149 - chan 165 */
 #define RTW_5GHZ_5725_5850	\
-	REG_RULE(5725-10, 5850+10, 40, 0, 30, \
-		 NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS)
+	REG_RULE(5725-10, 5850+10, 80, 0, 30, \
+		NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS)
 
 /* 5G chan 36 - chan 165 */
 #define RTW_5GHZ_5150_5850	\
-	REG_RULE(5150-10, 5850+10, 40, 0, 30,	\
+	REG_RULE(5150-10, 5850+10, 80, 0, 30,	\
 		 NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS)
 
 static const struct ieee80211_regdomain rtw_regdom_rd = {
-	.n_reg_rules = 3,
+	.n_reg_rules = 4,
 	.alpha2 = "99",
 	.reg_rules = {
 		RTW_2GHZ_CH01_11,
@@ -82,6 +82,7 @@ static const struct ieee80211_regdomain rtw_regdom_rd = {
 	}
 };
 
+#if 0
 static const struct ieee80211_regdomain rtw_regdom_11 = {
 	.n_reg_rules = 1,
 	.alpha2 = "99",
@@ -141,6 +142,7 @@ static const struct ieee80211_regdomain rtw_regdom_14 = {
 	}
 };
 
+#endif
 #if 0
 static struct rtw_regulatory *rtw_regd;
 #endif
@@ -257,15 +259,15 @@ static void _rtw_reg_apply_active_scan_flags(struct wiphy *wiphy,
 void rtw_regd_apply_flags(struct wiphy *wiphy)
 {
 	struct dvobj_priv *dvobj = wiphy_to_dvobj(wiphy);
-	struct rf_ctl_t *rfctl = dvobj_to_rfctl(dvobj);
-	RT_CHANNEL_INFO *channel_set = rfctl->channel_set;
-	u8 max_chan_nums = rfctl->max_chan_nums;
+	//struct rf_ctl_t *rfctl = dvobj_to_rfctl(dvobj);
+	//RT_CHANNEL_INFO *channel_set = rfctl->channel_set;
+	//u8 max_chan_nums = rfctl->max_chan_nums;
 
 	struct ieee80211_supported_band *sband;
 	struct ieee80211_channel *ch;
 	unsigned int i, j;
 	u16 channel;
-	u32 freq;
+	//u32 freq;
 
 	/* all channels disable */
 	for (i = 0; i < NUM_NL80211_BANDS; i++) {
@@ -276,12 +278,14 @@ void rtw_regd_apply_flags(struct wiphy *wiphy)
 				ch = &sband->channels[j];
 
 				if (ch)
-					ch->flags = IEEE80211_CHAN_DISABLED;
+					ch->flags &= ~(IEEE80211_CHAN_DISABLED|IEEE80211_CHAN_NO_HT40PLUS|IEEE80211_CHAN_NO_HT40MINUS);
+					//ch->flags = IEEE80211_CHAN_DISABLED;
 			}
 		}
 	}
 
 	/* channels apply by channel plans. */
+	/*
 	for (i = 0; i < max_chan_nums; i++) {
 		channel = channel_set[i].ChannelNum;
 		freq = rtw_ch2freq(channel);
@@ -316,8 +320,9 @@ void rtw_regd_apply_flags(struct wiphy *wiphy)
 			ch->flags |= IEEE80211_CHAN_NO_IR;
 			#endif
 		}
-		#endif /* CONFIG_DFS */
+		#endif CONFIG_DFS
 	}
+*/
 }
 
 static const struct ieee80211_regdomain *_rtw_regdomain_select(struct