diff --git a/wifi/1.4/default/hidl_struct_util.cpp b/wifi/1.4/default/hidl_struct_util.cpp
index 45ffdde..4996e35 100644
--- a/wifi/1.4/default/hidl_struct_util.cpp
+++ b/wifi/1.4/default/hidl_struct_util.cpp
@@ -120,8 +120,6 @@
             return HidlStaIfaceCaps::ND_OFFLOAD;
         case WIFI_FEATURE_MKEEP_ALIVE:
             return HidlStaIfaceCaps::KEEP_ALIVE;
-        case WIFI_FEATURE_INFRA_6G:
-            return HidlStaIfaceCaps::STA_6G;
     };
     CHECK(false) << "Unknown legacy feature: " << feature;
     return {};
@@ -394,8 +392,7 @@
           WIFI_FEATURE_IE_WHITELIST, WIFI_FEATURE_SCAN_RAND,
           WIFI_FEATURE_INFRA_5G, WIFI_FEATURE_HOTSPOT, WIFI_FEATURE_PNO,
           WIFI_FEATURE_TDLS, WIFI_FEATURE_TDLS_OFFCHANNEL,
-          WIFI_FEATURE_CONFIG_NDO, WIFI_FEATURE_MKEEP_ALIVE,
-          WIFI_FEATURE_INFRA_6G}) {
+          WIFI_FEATURE_CONFIG_NDO, WIFI_FEATURE_MKEEP_ALIVE}) {
         if (feature & legacy_feature_set) {
             *hidl_caps |= convertLegacyFeatureToHidlStaIfaceCapability(feature);
         }
diff --git a/wifi/1.4/default/hidl_struct_util.h b/wifi/1.4/default/hidl_struct_util.h
index 160870a..d040c1f 100644
--- a/wifi/1.4/default/hidl_struct_util.h
+++ b/wifi/1.4/default/hidl_struct_util.h
@@ -25,7 +25,6 @@
 #include <android/hardware/wifi/1.3/IWifiChip.h>
 #include <android/hardware/wifi/1.3/types.h>
 #include <android/hardware/wifi/1.4/IWifiChipEventCallback.h>
-#include <android/hardware/wifi/1.4/IWifiStaIface.h>
 #include <android/hardware/wifi/1.4/types.h>
 
 #include "wifi_legacy_hal.h"
diff --git a/wifi/1.4/default/wifi_chip.cpp b/wifi/1.4/default/wifi_chip.cpp
index 2b015d3..a70457b 100644
--- a/wifi/1.4/default/wifi_chip.cpp
+++ b/wifi/1.4/default/wifi_chip.cpp
@@ -938,7 +938,8 @@
     return createWifiStatus(WifiStatusCode::SUCCESS);
 }
 
-std::pair<WifiStatus, sp<IWifiStaIface>> WifiChip::createStaIfaceInternal() {
+std::pair<WifiStatus, sp<V1_3::IWifiStaIface>>
+WifiChip::createStaIfaceInternal() {
     if (!canCurrentModeSupportIfaceOfTypeWithCurrentIfaces(IfaceType::STA)) {
         return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
     }
@@ -962,7 +963,7 @@
     return {createWifiStatus(WifiStatusCode::SUCCESS), getNames(sta_ifaces_)};
 }
 
-std::pair<WifiStatus, sp<IWifiStaIface>> WifiChip::getStaIfaceInternal(
+std::pair<WifiStatus, sp<V1_3::IWifiStaIface>> WifiChip::getStaIfaceInternal(
     const std::string& ifname) {
     const auto iface = findUsingName(sta_ifaces_, ifname);
     if (!iface.get()) {
diff --git a/wifi/1.4/default/wifi_chip.h b/wifi/1.4/default/wifi_chip.h
index c76eabf..3323ade 100644
--- a/wifi/1.4/default/wifi_chip.h
+++ b/wifi/1.4/default/wifi_chip.h
@@ -197,9 +197,9 @@
     std::pair<WifiStatus, sp<IWifiP2pIface>> getP2pIfaceInternal(
         const std::string& ifname);
     WifiStatus removeP2pIfaceInternal(const std::string& ifname);
-    std::pair<WifiStatus, sp<IWifiStaIface>> createStaIfaceInternal();
+    std::pair<WifiStatus, sp<V1_3::IWifiStaIface>> createStaIfaceInternal();
     std::pair<WifiStatus, std::vector<hidl_string>> getStaIfaceNamesInternal();
-    std::pair<WifiStatus, sp<IWifiStaIface>> getStaIfaceInternal(
+    std::pair<WifiStatus, sp<V1_3::IWifiStaIface>> getStaIfaceInternal(
         const std::string& ifname);
     WifiStatus removeStaIfaceInternal(const std::string& ifname);
     std::pair<WifiStatus, sp<V1_0::IWifiRttController>>
diff --git a/wifi/1.4/default/wifi_sta_iface.cpp b/wifi/1.4/default/wifi_sta_iface.cpp
index 68c989d..e2ea6e4 100644
--- a/wifi/1.4/default/wifi_sta_iface.cpp
+++ b/wifi/1.4/default/wifi_sta_iface.cpp
@@ -266,13 +266,6 @@
                            hidl_status_cb);
 }
 
-Return<void> WifiStaIface::getCapabilities_1_4(
-    getCapabilities_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::getCapabilitiesInternal_1_4,
-                           hidl_status_cb);
-}
-
 std::pair<WifiStatus, std::string> WifiStaIface::getNameInternal() {
     return {createWifiStatus(WifiStatusCode::SUCCESS), ifname_};
 }
@@ -290,7 +283,26 @@
 }
 
 std::pair<WifiStatus, uint32_t> WifiStaIface::getCapabilitiesInternal() {
-    return {createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED), 0};
+    legacy_hal::wifi_error legacy_status;
+    uint64_t legacy_feature_set;
+    std::tie(legacy_status, legacy_feature_set) =
+        legacy_hal_.lock()->getSupportedFeatureSet(ifname_);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        return {createWifiStatusFromLegacyError(legacy_status), 0};
+    }
+    uint32_t legacy_logger_feature_set;
+    std::tie(legacy_status, legacy_logger_feature_set) =
+        legacy_hal_.lock()->getLoggerSupportedFeatureSet(ifname_);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        // some devices don't support querying logger feature set
+        legacy_logger_feature_set = 0;
+    }
+    uint32_t hidl_caps;
+    if (!hidl_struct_util::convertLegacyFeaturesToHidlStaCapabilities(
+            legacy_feature_set, legacy_logger_feature_set, &hidl_caps)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), 0};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
 }
 
 std::pair<WifiStatus, StaApfPacketFilterCapabilities>
@@ -628,29 +640,6 @@
     return {createWifiStatus(WifiStatusCode::SUCCESS), mac};
 }
 
-std::pair<WifiStatus, uint32_t> WifiStaIface::getCapabilitiesInternal_1_4() {
-    legacy_hal::wifi_error legacy_status;
-    uint64_t legacy_feature_set;
-    std::tie(legacy_status, legacy_feature_set) =
-        legacy_hal_.lock()->getSupportedFeatureSet(ifname_);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        return {createWifiStatusFromLegacyError(legacy_status), 0};
-    }
-    uint32_t legacy_logger_feature_set;
-    std::tie(legacy_status, legacy_logger_feature_set) =
-        legacy_hal_.lock()->getLoggerSupportedFeatureSet(ifname_);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        // some devices don't support querying logger feature set
-        legacy_logger_feature_set = 0;
-    }
-    uint32_t hidl_caps;
-    if (!hidl_struct_util::convertLegacyFeaturesToHidlStaCapabilities(
-            legacy_feature_set, legacy_logger_feature_set, &hidl_caps)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), 0};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
-}
-
 }  // namespace implementation
 }  // namespace V1_4
 }  // namespace wifi
diff --git a/wifi/1.4/default/wifi_sta_iface.h b/wifi/1.4/default/wifi_sta_iface.h
index e85e39d..dee04f2 100644
--- a/wifi/1.4/default/wifi_sta_iface.h
+++ b/wifi/1.4/default/wifi_sta_iface.h
@@ -19,7 +19,7 @@
 
 #include <android-base/macros.h>
 #include <android/hardware/wifi/1.0/IWifiStaIfaceEventCallback.h>
-#include <android/hardware/wifi/1.4/IWifiStaIface.h>
+#include <android/hardware/wifi/1.3/IWifiStaIface.h>
 
 #include "hidl_callback_util.h"
 #include "wifi_iface_util.h"
@@ -35,7 +35,7 @@
 /**
  * HIDL interface object used to control a STA Iface instance.
  */
-class WifiStaIface : public V1_4::IWifiStaIface {
+class WifiStaIface : public V1_3::IWifiStaIface {
    public:
     WifiStaIface(const std::string& ifname,
                  const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
@@ -112,8 +112,6 @@
                                setMacAddress_cb hidl_status_cb) override;
     Return<void> getFactoryMacAddress(
         getFactoryMacAddress_cb hidl_status_cb) override;
-    Return<void> getCapabilities_1_4(
-        getCapabilities_1_4_cb hidl_status_cb) override;
 
    private:
     // Corresponding worker functions for the HIDL methods.
@@ -162,7 +160,6 @@
     WifiStatus setMacAddressInternal(const std::array<uint8_t, 6>& mac);
     std::pair<WifiStatus, std::array<uint8_t, 6>>
     getFactoryMacAddressInternal();
-    std::pair<WifiStatus, uint32_t> getCapabilitiesInternal_1_4();
 
     std::string ifname_;
     std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;