diff --git a/main/application.cc b/main/application.cc
index 6a6fbd8..446ac57 100644
--- a/main/application.cc
+++ b/main/application.cc
@@ -1208,6 +1208,34 @@ void Application::Start() {
                     }
                 });
             }
+        } else if (strcmp(type->valuestring, "subtitle") == 0) {
+            // 火山 RTC 字幕消息：data 数组中包含 text、userId、definite
+            auto data_arr = cJSON_GetObjectItem(root, "data");
+            if (data_arr && cJSON_IsArray(data_arr)) {
+                for (int i = 0; i < cJSON_GetArraySize(data_arr); ++i) {
+                    auto item = cJSON_GetArrayItem(data_arr, i);
+                    auto text = cJSON_GetObjectItem(item, "text");
+                    auto user_id = cJSON_GetObjectItem(item, "userId");
+                    auto definite = cJSON_GetObjectItem(item, "definite");
+                    if (!text || !cJSON_IsString(text) || !text->valuestring[0]) continue;
+
+                    bool is_final = definite && cJSON_IsTrue(definite);
+                    // 通过 userId 判断是用户说的还是 AI 回复
+                    // device_name 对应本设备 UID，匹配则为用户语音识别
+                    bool is_user = false;
+                    if (user_id && cJSON_IsString(user_id)) {
+                        const char* dev_name = CONFIG_VOLC_DEVICE_NAME;
+                        is_user = (strcmp(user_id->valuestring, dev_name) == 0);
+                    }
+
+                    std::string msg = text->valuestring;
+                    const char* role = is_user ? "user" : "assistant";
+                    ESP_LOGI(TAG, "%s %s: %s", is_final ? ">>" : "..", role, msg.c_str());
+                    Schedule([this, display, msg, role_str = std::string(role)]() {
+                        display->SetChatMessage(role_str.c_str(), msg.c_str());
+                    });
+                }
+            }
         } else if (strcmp(type->valuestring, "iot") == 0) {
             auto commands = cJSON_GetObjectItem(root, "commands");
             if (commands != NULL) {
diff --git a/main/protocols/volc_rtc_protocol.cc b/main/protocols/volc_rtc_protocol.cc
index fa4b871..82f77e4 100644
--- a/main/protocols/volc_rtc_protocol.cc
+++ b/main/protocols/volc_rtc_protocol.cc
@@ -591,12 +591,18 @@ void VolcRtcProtocol::DataCallback(void* context, const void* data, size_t len,
                         bool is_ctrl = (memcmp(buf, "ctrl", 4) == 0);
                         bool is_conv = (memcmp(buf, "conv", 4) == 0);
                         bool is_tool = (memcmp(buf, "tool", 4) == 0);
-                        if (is_ctrl || is_conv || is_tool) {
+                        bool is_subv = (memcmp(buf, "subv", 4) == 0);
+                        if (is_ctrl || is_conv || is_tool || is_subv) {
                             uint32_t json_len = (uint32_t)((buf[4] << 24) | (buf[5] << 16) | (buf[6] << 8) | (buf[7]));
                             if (json_len > 0 && (size_t)(8 + json_len) <= len) {
                                 json_text.assign(reinterpret_cast<const char*>(buf + 8), json_len);
                                 if (!protocol->suppress_incoming_message_log_) {
-                                    ESP_LOGI(TAG, "接收下行二进制消息(%s): %.*s", is_ctrl ? "ctrl" : (is_conv ? "conv" : "tool"), (int)json_text.size(), json_text.c_str());
+                                    if (is_subv) {
+                                        ESP_LOGI(TAG, "接收下行二进制消息(字幕)");
+                                    } else {
+                                        const char* prefix = is_ctrl ? "ctrl" : (is_conv ? "conv" : "tool");
+                                        ESP_LOGI(TAG, "接收下行二进制消息(%s): %.*s", prefix, (int)json_text.size(), json_text.c_str());
+                                    }
                                 }
                             }
                         }
diff --git a/sdkconfig b/sdkconfig
index bf13569..8e31f65 100644
--- a/sdkconfig
+++ b/sdkconfig
@@ -14,7 +14,6 @@ CONFIG_SOC_GDMA_SUPPORTED=y
 CONFIG_SOC_AHB_GDMA_SUPPORTED=y
 CONFIG_SOC_GPTIMER_SUPPORTED=y
 CONFIG_SOC_LCDCAM_SUPPORTED=y
-CONFIG_SOC_LCDCAM_CAM_SUPPORTED=y
 CONFIG_SOC_LCDCAM_I80_LCD_SUPPORTED=y
 CONFIG_SOC_LCDCAM_RGB_LCD_SUPPORTED=y
 CONFIG_SOC_MCPWM_SUPPORTED=y
@@ -102,7 +101,7 @@ CONFIG_SOC_CPU_HAS_FPU=y
 CONFIG_SOC_HP_CPU_HAS_MULTIPLE_CORES=y
 CONFIG_SOC_CPU_BREAKPOINTS_NUM=2
 CONFIG_SOC_CPU_WATCHPOINTS_NUM=2
-CONFIG_SOC_CPU_WATCHPOINT_MAX_REGION_SIZE=0x40
+CONFIG_SOC_CPU_WATCHPOINT_MAX_REGION_SIZE=64
 CONFIG_SOC_SIMD_PREFERRED_DATA_ALIGNMENT=16
 CONFIG_SOC_DS_SIGNATURE_MAX_BIT_LEN=4096
 CONFIG_SOC_DS_KEY_PARAM_MD_IV_LENGTH=16
@@ -209,7 +208,7 @@ CONFIG_SOC_RTCIO_INPUT_OUTPUT_SUPPORTED=y
 CONFIG_SOC_RTCIO_HOLD_SUPPORTED=y
 CONFIG_SOC_RTCIO_WAKE_SUPPORTED=y
 CONFIG_SOC_LP_IO_CLOCK_IS_INDEPENDENT=y
-CONFIG_SOC_SDM_GROUPS=1
+CONFIG_SOC_SDM_GROUPS=y
 CONFIG_SOC_SDM_CHANNELS_PER_GROUP=8
 CONFIG_SOC_SDM_CLK_SUPPORT_APB=y
 CONFIG_SOC_SPI_PERIPH_NUM=3
@@ -370,9 +369,6 @@ CONFIG_SOC_BLE_DEVICE_PRIVACY_SUPPORTED=y
 CONFIG_SOC_BLUFI_SUPPORTED=y
 CONFIG_SOC_ULP_HAS_ADC=y
 CONFIG_SOC_PHY_COMBO_MODULE=y
-CONFIG_SOC_LCDCAM_CAM_SUPPORT_RGB_YUV_CONV=y
-CONFIG_SOC_LCDCAM_CAM_PERIPH_NUM=1
-CONFIG_SOC_LCDCAM_CAM_DATA_WIDTH_MAX=16
 CONFIG_IDF_CMAKE=y
 CONFIG_IDF_TOOLCHAIN="gcc"
 CONFIG_IDF_TOOLCHAIN_GCC=y
@@ -1035,7 +1031,6 @@ CONFIG_BT_BLE_42_FEATURES_SUPPORTED=y
 CONFIG_BT_BLE_42_DTM_TEST_EN=y
 CONFIG_BT_BLE_42_ADV_EN=y
 CONFIG_BT_BLE_42_SCAN_EN=y
-CONFIG_BT_BLE_VENDOR_HCI_EN=y
 # CONFIG_BT_BLE_HIGH_DUTY_ADV_INTERVAL is not set
 # CONFIG_BT_ABORT_WHEN_ALLOCATION_FAILS is not set
 # end of Bluedroid Options
@@ -1257,7 +1252,6 @@ CONFIG_ESP_TLS_USE_DS_PERIPHERAL=y
 # CONFIG_ESP_TLS_SERVER_MIN_AUTH_MODE_OPTIONAL is not set
 # CONFIG_ESP_TLS_PSK_VERIFICATION is not set
 # CONFIG_ESP_TLS_INSECURE is not set
-CONFIG_ESP_TLS_DYN_BUF_STRATEGY_SUPPORTED=y
 # end of ESP-TLS
 
 #
@@ -1285,12 +1279,6 @@ CONFIG_ESP_ERR_TO_NAME_LOOKUP=y
 CONFIG_ESP_ALLOW_BSS_SEG_EXTERNAL_MEMORY=y
 # end of Common ESP-related
 
-#
-# ESP-Driver:Camera Controller Configurations
-#
-# CONFIG_CAM_CTLR_DVP_CAM_ISR_CACHE_SAFE is not set
-# end of ESP-Driver:Camera Controller Configurations
-
 #
 # ESP-Driver:GPIO Configurations
 #
@@ -1608,11 +1596,8 @@ CONFIG_ESP_PHY_RF_CAL_PARTIAL=y
 # CONFIG_ESP_PHY_RF_CAL_NONE is not set
 # CONFIG_ESP_PHY_RF_CAL_FULL is not set
 CONFIG_ESP_PHY_CALIBRATION_MODE=0
-CONFIG_ESP_PHY_PLL_TRACK_PERIOD_MS=1000
 # CONFIG_ESP_PHY_PLL_TRACK_DEBUG is not set
 # CONFIG_ESP_PHY_RECORD_USED_TIME is not set
-CONFIG_ESP_PHY_IRAM_OPT=y
-# CONFIG_ESP_PHY_DEBUG is not set
 # end of PHY
 
 #
@@ -2283,7 +2268,6 @@ CONFIG_MBEDTLS_DYNAMIC_BUFFER=y
 # CONFIG_MBEDTLS_X509_TRUSTED_CERT_CALLBACK is not set
 # CONFIG_MBEDTLS_SSL_CONTEXT_SERIALIZATION is not set
 # CONFIG_MBEDTLS_SSL_KEEP_PEER_CERTIFICATE is not set
-# CONFIG_MBEDTLS_SSL_KEYING_MATERIAL_EXPORT is not set
 CONFIG_MBEDTLS_PKCS7_C=y
 # end of mbedTLS v3.x related
 
@@ -3314,7 +3298,6 @@ CONFIG_BT_NIMBLE_COEX_PHY_CODED_TX_RX_TLIM_DIS=y
 CONFIG_SW_COEXIST_ENABLE=y
 CONFIG_ESP32_WIFI_SW_COEXIST_ENABLE=y
 CONFIG_ESP_WIFI_SW_COEXIST_ENABLE=y
-# CONFIG_CAM_CTLR_DVP_CAM_ISR_IRAM_SAFE is not set
 # CONFIG_MCPWM_ISR_IN_IRAM is not set
 # CONFIG_EVENT_LOOP_PROFILING is not set
 CONFIG_POST_EVENTS_FROM_ISR=y