diff --git a/patches/system/bt/0002-Add-props-to-control-supported-features-and-states-1.patch b/patches/system/bt/0002-Add-props-to-control-supported-features-and-states-1.patch
new file mode 100644
index 0000000..65e05f1
--- /dev/null
+++ b/patches/system/bt/0002-Add-props-to-control-supported-features-and-states-1.patch
@@ -0,0 +1,98 @@
+From 8d27edea9774e92b6b441b63f3936b3cdb1aaa88 Mon Sep 17 00:00:00 2001
+From: penn5 <penn5@users.noreply.github.com>
+Date: Mon, 4 Mar 2019 22:21:07 +0000
+Subject: [PATCH 2/2] Add props to control supported features and states (#1)
+
+* Add bitmask for supported fields
+Use persist.sys.bt.unsupport.states, defaults to 0, left-aligned.
+Huawei suggest to use 000000000000000000000011111
+
+* Add bitmask to LOCAL_SUPPORTED_FEATURES
+For Huawei, suggest to use 00000001
+---
+ hci/src/hci_packet_parser.cc | 55 ++++++++++++++++++++++++++++++++++++
+ 1 file changed, 55 insertions(+)
+
+diff --git a/hci/src/hci_packet_parser.cc b/hci/src/hci_packet_parser.cc
+index 3f4e46cb4..9afa0deab 100644
+--- a/hci/src/hci_packet_parser.cc
++++ b/hci/src/hci_packet_parser.cc
+@@ -27,6 +27,8 @@
+ #include "hcimsgs.h"
+ #include "osi/include/log.h"
+ 
++#include <cutils/properties.h>
++
+ static const command_opcode_t NO_OPCODE_CHECKING = 0;
+ 
+ static const allocator_t* buffer_allocator;
+@@ -137,6 +139,33 @@ static void parse_read_local_extended_features_response(
+   STREAM_TO_ARRAY(feature_pages[*page_number_ptr].as_array, stream,
+                   (int)sizeof(bt_device_features_t));
+ 
++  int ijk;
++  for (ijk = 0; ijk < ((int)sizeof(bt_device_features_t)); ijk++) LOG_DEBUG(LOG_TAG, "supported feature 0x%x is 0x%x", ijk, feature_pages[*page_number_ptr].as_array[ijk]);
++
++  char unsupport_bitmask_str[PROPERTY_VALUE_MAX];
++  property_get("persist.sys.bt.unsupport.features", unsupport_bitmask_str, "0");
++
++  unsigned int len = strlen(unsupport_bitmask_str);
++  uint8_t unsupport_bitmask[8] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
++  unsigned int c;
++
++  for (c = 0; c < len; c++) {
++    if (unsupport_bitmask_str[c] == '1') {
++      unsupport_bitmask[c/8] = ~ ( (1 << c%8) | ~ unsupport_bitmask[c/8] ); // The logic here is hard to represent in C(++), basically we do a bitwise AND for the bit we are on now. But C(++) pads with 0s so we end up 0ing too much.
++    } else if (unsupport_bitmask_str[c] != '0') {
++      LOG_ERROR(LOG_TAG, "invalid characters in bitmask; skipping %c", unsupport_bitmask_str[c]);
++      goto out;
++    }
++  }
++
++
++  for (c = 0; c < ((int)sizeof(bt_device_features_t)); c++)
++    feature_pages[*page_number_ptr].as_array[c] &= unsupport_bitmask[c];
++  LOG_DEBUG(LOG_TAG, "generated bitmask 0x%x%x%x%x%x%x%x%x from prop persist.sys.bt.unsupport.features", unsupport_bitmask[0], unsupport_bitmask[1], unsupport_bitmask[2], unsupport_bitmask[3], unsupport_bitmask[4], unsupport_bitmask[5], unsupport_bitmask[6], unsupport_bitmask[7]);
++out:
++  for (ijk = 0; ijk < ((int)sizeof(bt_device_features_t)); ijk++) LOG_ERROR(LOG_TAG, "supported feature 0x%x is 0x%x", ijk, feature_pages[*page_number_ptr].as_array[ijk]);
++  LOG_DEBUG(LOG_TAG, "supported_features array done");
++
+   buffer_allocator->free(response);
+ }
+ 
+@@ -170,6 +199,32 @@ static void parse_ble_read_supported_states_response(
+   CHECK(stream != NULL);
+   STREAM_TO_ARRAY(supported_states, stream, (int)supported_states_size);
+ 
++  int ijk;
++  for (ijk = 0; ijk < ((int)supported_states_size); ijk++) LOG_DEBUG(LOG_TAG, "supported state 0x%x is 0x%x", ijk, supported_states[ijk]);
++
++  char unsupport_bitmask_str[PROPERTY_VALUE_MAX];
++  property_get("persist.sys.bt.unsupport.states", unsupport_bitmask_str, "0");
++
++  unsigned int len = strlen(unsupport_bitmask_str);
++  uint8_t unsupport_bitmask[8] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
++  unsigned int c;
++
++  for (c = 0; c < len; c++) {
++    if (unsupport_bitmask_str[c] == '1') {
++      unsupport_bitmask[c/8] = ~ ( (1 << c%8) | ~ unsupport_bitmask[c/8] ); // The logic here is hard to represent in C(++), basically we do a bitwise AND for the bit we are on now. But C(++) pads with 0s so we end up 0ing too much.
++    } else if (unsupport_bitmask_str[c] != '0') {
++      LOG_ERROR(LOG_TAG, "invalid characters in bitmask; skipping %c", unsupport_bitmask_str[c]);
++      goto out;
++    }
++  }
++
++
++  for (c = 0; c < supported_states_size; c++)
++    supported_states[c] &= unsupport_bitmask[c];
++  LOG_DEBUG(LOG_TAG, "generated bitmask 0x%x%x%x%x%x%x%x%x from prop persist.sys.bt.unsupport.states", unsupport_bitmask[0], unsupport_bitmask[1], unsupport_bitmask[2], unsupport_bitmask[3], unsupport_bitmask[4], unsupport_bitmask[5], unsupport_bitmask[6], unsupport_bitmask[7]);
++out:
++  for (ijk = 0; ijk < ((int)supported_states_size); ijk++) LOG_ERROR(LOG_TAG, "supported state 0x%x is 0x%x", ijk, supported_states[ijk]);
++  LOG_DEBUG(LOG_TAG, "supported_states array done");
+   buffer_allocator->free(response);
+ }
+ 
+-- 
+2.17.1
+