diff --git a/docs/ble-autostart-ota.md b/docs/ble-autostart-ota.md
new file mode 100644
index 0000000..d041950
--- /dev/null
+++ b/docs/ble-autostart-ota.md
@@ -0,0 +1,71 @@
+# BLE 自启与 OTA 说明
+
+## 开机自启
+
+电脑端只需要一个常驻进程：`tools/pc-metrics/push-metrics-ble.py`。
+
+安装开机自启：
+
+```powershell
+& "D:\AI Code\ESP-32\tools\pc-metrics\install-ble-autostart.ps1"
+```
+
+卸载开机自启：
+
+```powershell
+& "D:\AI Code\ESP-32\tools\pc-metrics\uninstall-ble-autostart.ps1"
+```
+
+计划任务名称是 `RLCD Metrics BLE`，触发条件是当前 Windows 用户登录后启动。
+
+## BLE 状态回传
+
+板子会通过 BLE notify 回传 `STA2` 状态：
+
+```text
+STA2,1,<battery_percent>,<battery_mv>,<temperature_c10>,<humidity_percent>,<ble_write_count>,<uptime_seconds>,<internal_heap_kb>,<psram_free_kb>
+```
+
+电脑端日志会显示成更易读的形式：
+
+```text
+BLE board: bat=98% 4095mV env=29.3C/57% writes=12 up=50s heap=140K psram=7581K
+```
+
+## BLE OTA
+
+当前固件分区已经改成 `ota_0 / ota_1` 双应用槽。首次启用 OTA 必须先通过 USB 烧录一次新分区表和底座固件，之后可以用 BLE 发送新固件。
+
+发送当前构建产物：
+
+```powershell
+& "D:\AI Code\ESP-32\tools\pc-metrics\send-ble-ota.ps1"
+```
+
+发送指定固件：
+
+```powershell
+& "D:\AI Code\ESP-32\tools\pc-metrics\send-ble-ota.ps1" -Firmware "D:\AI Code\ESP-32\build\rlcd_clock.bin"
+```
+
+OTA 期间需要先停止实时推送进程，避免同一时间抢 BLE 连接：
+
+```powershell
+& "D:\AI Code\ESP-32\tools\pc-metrics\stop-ble-metrics.ps1"
+```
+
+OTA 成功后板子会回传 `OTA,DONE,<bytes>` 并自动重启。重启后重新启动实时推送：
+
+```powershell
+& "D:\AI Code\ESP-32\tools\pc-metrics\start-ble-metrics.ps1"
+```
+
+## 电量口径
+
+电量百分比按微雪官方 ADC 示例口径换算：
+
+- 低于 `3.0V` 显示 `0%`
+- 高于 `4.12V` 显示 `100%`
+- 中间按线性百分比显示
+
+USB 充电时看到的电压通常会受充电状态影响，所以百分比仍然是估算值，不是库仑计精度。
diff --git a/main/CMakeLists.txt b/main/CMakeLists.txt
index 7ad48e8..33db5ce 100644
--- a/main/CMakeLists.txt
+++ b/main/CMakeLists.txt
@@ -20,6 +20,7 @@ idf_component_register(
         esp_driver_usb_serial_jtag
         esp_driver_i2c
         esp_adc
+        app_update
         bt
         nvs_flash
 )
diff --git a/main/battery_monitor.c b/main/battery_monitor.c
index 20d1467..60103c9 100644
--- a/main/battery_monitor.c
+++ b/main/battery_monitor.c
@@ -18,8 +18,8 @@ static const char *TAG = "battery";
 #define BATTERY_ADC_CHANNEL ADC_CHANNEL_3
 #define BATTERY_ADC_ATTEN ADC_ATTEN_DB_12
 #define BATTERY_DIVIDER 3
-#define BATTERY_EMPTY_MV 2500
-#define BATTERY_FULL_MV 4200
+#define BATTERY_EMPTY_MV 3000
+#define BATTERY_FULL_MV 4120
 
 static adc_oneshot_unit_handle_t s_adc_handle;
 static adc_cali_handle_t s_cali_handle;
diff --git a/main/main.c b/main/main.c
index 598b163..26918bd 100644
--- a/main/main.c
+++ b/main/main.c
@@ -3,6 +3,7 @@
 #include "esp_err.h"
 #include "esp_heap_caps.h"
 #include "esp_log.h"
+#include "esp_system.h"
 #include "freertos/FreeRTOS.h"
 #include "freertos/task.h"
 #include "lvgl.h"
@@ -122,8 +123,18 @@ void app_main(void)
         TickType_t now_tick = xTaskGetTickCount();
         if ((now_tick - last_status_notify_tick) >= pdMS_TO_TICKS(5000)) {
             last_status_notify_tick = now_tick;
+            uint32_t uptime_seconds = (uint32_t)(now_tick / configTICK_RATE_HZ);
+            uint32_t internal_free_kb = (uint32_t)(heap_caps_get_free_size(MALLOC_CAP_INTERNAL) / 1024);
+            uint32_t psram_free_kb = (uint32_t)(heap_caps_get_free_size(MALLOC_CAP_SPIRAM) / 1024);
             metrics_ble_notify_status(latest_battery_percent, latest_battery_mv,
-                                      latest_temperature_c10, latest_humidity_percent);
+                                      latest_temperature_c10, latest_humidity_percent,
+                                      uptime_seconds, internal_free_kb, psram_free_kb);
+        }
+
+        if (metrics_ble_take_ota_restart_request()) {
+            ESP_LOGW(TAG, "BLE OTA complete, restarting.");
+            vTaskDelay(pdMS_TO_TICKS(2000));
+            esp_restart();
         }
 
         lv_lock();
diff --git a/main/metrics_ble.c b/main/metrics_ble.c
index ec2d179..48306aa 100644
--- a/main/metrics_ble.c
+++ b/main/metrics_ble.c
@@ -2,8 +2,10 @@
 
 #include <assert.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 
+#include "esp_ota_ops.h"
 #include "esp_err.h"
 #include "esp_log.h"
 #include "freertos/FreeRTOS.h"
@@ -27,6 +29,8 @@ static const char *DEVICE_NAME = "RLCD-Metrics";
 // Service: 9f4af548-1a14-4fc1-8f5a-4b9f00000001
 // Write char: 9f4af548-1a14-4fc1-8f5a-4b9f00000002
 // Status notify char: 9f4af548-1a14-4fc1-8f5a-4b9f00000003
+// OTA control char: 9f4af548-1a14-4fc1-8f5a-4b9f00000004
+// OTA data char: 9f4af548-1a14-4fc1-8f5a-4b9f00000005
 static const ble_uuid128_t metrics_svc_uuid =
     BLE_UUID128_INIT(0x01, 0x00, 0x00, 0x00, 0x9f, 0x4b, 0x5a, 0x8f,
                      0xc1, 0x4f, 0x14, 0x1a, 0x48, 0xf5, 0x4a, 0x9f);
@@ -36,19 +40,57 @@ static const ble_uuid128_t metrics_chr_uuid =
 static const ble_uuid128_t status_chr_uuid =
     BLE_UUID128_INIT(0x03, 0x00, 0x00, 0x00, 0x9f, 0x4b, 0x5a, 0x8f,
                      0xc1, 0x4f, 0x14, 0x1a, 0x48, 0xf5, 0x4a, 0x9f);
+static const ble_uuid128_t ota_control_chr_uuid =
+    BLE_UUID128_INIT(0x04, 0x00, 0x00, 0x00, 0x9f, 0x4b, 0x5a, 0x8f,
+                     0xc1, 0x4f, 0x14, 0x1a, 0x48, 0xf5, 0x4a, 0x9f);
+static const ble_uuid128_t ota_data_chr_uuid =
+    BLE_UUID128_INIT(0x05, 0x00, 0x00, 0x00, 0x9f, 0x4b, 0x5a, 0x8f,
+                     0xc1, 0x4f, 0x14, 0x1a, 0x48, 0xf5, 0x4a, 0x9f);
 
 static uint8_t own_addr_type;
 static uint16_t metrics_chr_val_handle;
 static uint16_t status_chr_val_handle;
+static uint16_t ota_control_chr_val_handle;
+static uint16_t ota_data_chr_val_handle;
 static uint16_t s_conn_handle;
 static bool s_status_notify_enabled;
 static QueueHandle_t s_metrics_queue;
 static uint32_t s_ble_write_count;
+static bool s_ota_restart_requested;
+
+typedef struct {
+    bool active;
+    esp_ota_handle_t handle;
+    const esp_partition_t *partition;
+    uint32_t expected_size;
+    uint32_t written;
+} ble_ota_state_t;
+
+static ble_ota_state_t s_ota;
 
 void ble_store_config_init(void);
 
 static int metrics_gap_event(struct ble_gap_event *event, void *arg);
 
+static bool metrics_notify_text(const char *line)
+{
+    if (!s_status_notify_enabled || s_conn_handle == 0 || status_chr_val_handle == 0 || line == NULL) {
+        return false;
+    }
+
+    struct os_mbuf *om = ble_hs_mbuf_from_flat(line, strlen(line));
+    if (om == NULL) {
+        return false;
+    }
+
+    int rc = ble_gatts_notify_custom(s_conn_handle, status_chr_val_handle, om);
+    if (rc != 0) {
+        ESP_LOGW(TAG, "status notify failed: %d", rc);
+        return false;
+    }
+    return true;
+}
+
 static const char *metrics_phy_name(uint8_t phy)
 {
     switch (phy) {
@@ -82,10 +124,51 @@ static int metrics_gatt_access(uint16_t conn_handle, uint16_t attr_handle,
     (void)conn_handle;
     (void)arg;
 
-    if (ctxt->op != BLE_GATT_ACCESS_OP_WRITE_CHR || attr_handle != metrics_chr_val_handle) {
+    if (ctxt->op != BLE_GATT_ACCESS_OP_WRITE_CHR) {
         return BLE_ATT_ERR_UNLIKELY;
     }
 
+    if (attr_handle == ota_data_chr_val_handle) {
+        if (!s_ota.active || s_ota.handle == 0) {
+            metrics_notify_text("OTA,ERR,NO_BEGIN");
+            return BLE_ATT_ERR_UNLIKELY;
+        }
+
+        uint16_t len = OS_MBUF_PKTLEN(ctxt->om);
+        if (len == 0) {
+            return 0;
+        }
+
+        uint8_t data[256];
+        if (len > sizeof(data)) {
+            metrics_notify_text("OTA,ERR,CHUNK_TOO_BIG");
+            return BLE_ATT_ERR_INVALID_ATTR_VALUE_LEN;
+        }
+
+        uint16_t copied = 0;
+        int rc = ble_hs_mbuf_to_flat(ctxt->om, data, sizeof(data), &copied);
+        if (rc != 0 || copied != len) {
+            metrics_notify_text("OTA,ERR,BAD_CHUNK");
+            return BLE_ATT_ERR_UNLIKELY;
+        }
+
+        esp_err_t ret = esp_ota_write(s_ota.handle, data, copied);
+        if (ret != ESP_OK) {
+            ESP_LOGE(TAG, "OTA write failed: %s", esp_err_to_name(ret));
+            metrics_notify_text("OTA,ERR,WRITE");
+            return BLE_ATT_ERR_UNLIKELY;
+        }
+
+        s_ota.written += copied;
+        if ((s_ota.written % (64 * 1024)) < copied) {
+            char status[48];
+            snprintf(status, sizeof(status), "OTA,PROG,%lu,%lu",
+                     (unsigned long)s_ota.written, (unsigned long)s_ota.expected_size);
+            metrics_notify_text(status);
+        }
+        return 0;
+    }
+
     char line[512] = {0};
     uint16_t len = 0;
     int rc = ble_hs_mbuf_to_flat(ctxt->om, line, sizeof(line) - 1, &len);
@@ -94,6 +177,93 @@ static int metrics_gatt_access(uint16_t conn_handle, uint16_t attr_handle,
     }
     line[len] = '\0';
 
+    if (attr_handle == ota_control_chr_val_handle) {
+        if (strncmp(line, "BEGIN,", 6) == 0) {
+            uint32_t expected_size = (uint32_t)strtoul(line + 6, NULL, 10);
+            if (expected_size == 0) {
+                metrics_notify_text("OTA,ERR,BAD_SIZE");
+                return BLE_ATT_ERR_INVALID_ATTR_VALUE_LEN;
+            }
+
+            if (s_ota.active && s_ota.handle != 0) {
+                esp_ota_abort(s_ota.handle);
+            }
+            memset(&s_ota, 0, sizeof(s_ota));
+            s_ota.partition = esp_ota_get_next_update_partition(NULL);
+            if (s_ota.partition == NULL) {
+                metrics_notify_text("OTA,ERR,NO_PARTITION");
+                return BLE_ATT_ERR_UNLIKELY;
+            }
+
+            esp_err_t ret = esp_ota_begin(s_ota.partition, OTA_SIZE_UNKNOWN, &s_ota.handle);
+            if (ret != ESP_OK) {
+                ESP_LOGE(TAG, "OTA begin failed: %s", esp_err_to_name(ret));
+                metrics_notify_text("OTA,ERR,BEGIN");
+                return BLE_ATT_ERR_UNLIKELY;
+            }
+
+            s_ota.active = true;
+            s_ota.expected_size = expected_size;
+            s_ota.written = 0;
+            metrics_notify_text("OTA,BEGIN");
+            return 0;
+        }
+
+        if (strcmp(line, "END") == 0) {
+            if (!s_ota.active || s_ota.handle == 0) {
+                metrics_notify_text("OTA,ERR,NO_BEGIN");
+                return BLE_ATT_ERR_UNLIKELY;
+            }
+            if (s_ota.expected_size > 0 && s_ota.written != s_ota.expected_size) {
+                ESP_LOGW(TAG, "OTA size mismatch: written=%lu expected=%lu",
+                         (unsigned long)s_ota.written, (unsigned long)s_ota.expected_size);
+                esp_ota_abort(s_ota.handle);
+                memset(&s_ota, 0, sizeof(s_ota));
+                metrics_notify_text("OTA,ERR,SIZE");
+                return BLE_ATT_ERR_INVALID_ATTR_VALUE_LEN;
+            }
+
+            esp_err_t ret = esp_ota_end(s_ota.handle);
+            if (ret != ESP_OK) {
+                ESP_LOGE(TAG, "OTA end failed: %s", esp_err_to_name(ret));
+                memset(&s_ota, 0, sizeof(s_ota));
+                metrics_notify_text("OTA,ERR,END");
+                return BLE_ATT_ERR_UNLIKELY;
+            }
+
+            ret = esp_ota_set_boot_partition(s_ota.partition);
+            if (ret != ESP_OK) {
+                ESP_LOGE(TAG, "OTA set boot failed: %s", esp_err_to_name(ret));
+                memset(&s_ota, 0, sizeof(s_ota));
+                metrics_notify_text("OTA,ERR,BOOT");
+                return BLE_ATT_ERR_UNLIKELY;
+            }
+
+            char status[48];
+            snprintf(status, sizeof(status), "OTA,DONE,%lu", (unsigned long)s_ota.written);
+            memset(&s_ota, 0, sizeof(s_ota));
+            s_ota_restart_requested = true;
+            metrics_notify_text(status);
+            return 0;
+        }
+
+        if (strcmp(line, "ABORT") == 0) {
+            if (s_ota.active && s_ota.handle != 0) {
+                esp_ota_abort(s_ota.handle);
+            }
+            memset(&s_ota, 0, sizeof(s_ota));
+            metrics_notify_text("OTA,ABORT");
+            return 0;
+        }
+
+        metrics_notify_text("OTA,ERR,BAD_CMD");
+        return BLE_ATT_ERR_INVALID_ATTR_VALUE_LEN;
+    }
+
+    if (attr_handle != metrics_chr_val_handle) {
+        return BLE_ATT_ERR_UNLIKELY;
+    }
+
     ui_metrics_t metrics;
     if (!metrics_parse_line(line, &metrics)) {
         ESP_LOGW(TAG, "bad BLE metrics: %s", line);
@@ -129,6 +299,18 @@ static const struct ble_gatt_svc_def metrics_gatt_svcs[] = {
                 .flags = BLE_GATT_CHR_F_NOTIFY,
                 .val_handle = &status_chr_val_handle,
             },
+            {
+                .uuid = &ota_control_chr_uuid.u,
+                .access_cb = metrics_gatt_access,
+                .flags = BLE_GATT_CHR_F_WRITE,
+                .val_handle = &ota_control_chr_val_handle,
+            },
+            {
+                .uuid = &ota_data_chr_uuid.u,
+                .access_cb = metrics_gatt_access,
+                .flags = BLE_GATT_CHR_F_WRITE | BLE_GATT_CHR_F_WRITE_NO_RSP,
+                .val_handle = &ota_data_chr_val_handle,
+            },
             {0},
         },
     },
@@ -299,29 +481,27 @@ bool metrics_ble_take_latest(ui_metrics_t *metrics)
 }
 
 bool metrics_ble_notify_status(int battery_percent, int battery_mv,
-                               int temperature_c10, int humidity_percent)
+                               int temperature_c10, int humidity_percent,
+                               uint32_t uptime_seconds, uint32_t internal_free_kb,
+                               uint32_t psram_free_kb)
 {
-    if (!s_status_notify_enabled || s_conn_handle == 0 || status_chr_val_handle == 0) {
-        return false;
-    }
-
-    char line[96];
-    int len = snprintf(line, sizeof(line), "STA,%d,%d,%d,%d,%lu",
+    char line[128];
+    int len = snprintf(line, sizeof(line), "STA2,1,%d,%d,%d,%d,%lu,%lu,%lu,%lu",
                        battery_percent, battery_mv, temperature_c10, humidity_percent,
-                       (unsigned long)s_ble_write_count);
+                       (unsigned long)s_ble_write_count, (unsigned long)uptime_seconds,
+                       (unsigned long)internal_free_kb, (unsigned long)psram_free_kb);
     if (len <= 0 || len >= (int)sizeof(line)) {
         return false;
     }
 
-    struct os_mbuf *om = ble_hs_mbuf_from_flat(line, len);
-    if (om == NULL) {
-        return false;
-    }
+    return metrics_notify_text(line);
+}
 
-    int rc = ble_gatts_notify_custom(s_conn_handle, status_chr_val_handle, om);
-    if (rc != 0) {
-        ESP_LOGW(TAG, "status notify failed: %d", rc);
+bool metrics_ble_take_ota_restart_request(void)
+{
+    if (!s_ota_restart_requested) {
         return false;
     }
+    s_ota_restart_requested = false;
     return true;
 }
diff --git a/main/metrics_ble.h b/main/metrics_ble.h
index e00d168..2dd8c73 100644
--- a/main/metrics_ble.h
+++ b/main/metrics_ble.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include <stdbool.h>
+#include <stdint.h>
 
 #include "ui_screen.h"
 
@@ -11,7 +12,10 @@ extern "C" {
 void metrics_ble_start(void);
 bool metrics_ble_take_latest(ui_metrics_t *metrics);
 bool metrics_ble_notify_status(int battery_percent, int battery_mv,
-                               int temperature_c10, int humidity_percent);
+                               int temperature_c10, int humidity_percent,
+                               uint32_t uptime_seconds, uint32_t internal_free_kb,
+                               uint32_t psram_free_kb);
+bool metrics_ble_take_ota_restart_request(void);
 
 #ifdef __cplusplus
 }
diff --git a/partitions.csv b/partitions.csv
index 163e311..a25eee7 100644
--- a/partitions.csv
+++ b/partitions.csv
@@ -1,4 +1,6 @@
-# Name,   Type, SubType, Offset,  Size,   Flags
-nvs,      data, nvs,     0x9000,  0x6000,
+# Name,   Type, SubType, Offset,  Size,     Flags
+nvs,      data, nvs,     0x9000,  0x4000,
+otadata,  data, ota,     0xd000,  0x2000,
 phy_init, data, phy,     0xf000,  0x1000,
-factory,  app,  factory, 0x10000, 0x400000,
+ota_0,    app,  ota_0,   0x20000, 0x3f0000,
+ota_1,    app,  ota_1,   ,        0x3f0000,
diff --git a/tools/pc-metrics/ble-ota.py b/tools/pc-metrics/ble-ota.py
new file mode 100644
index 0000000..d549916
--- /dev/null
+++ b/tools/pc-metrics/ble-ota.py
@@ -0,0 +1,134 @@
+from __future__ import annotations
+
+import argparse
+import asyncio
+import os
+import sys
+from pathlib import Path
+
+from bleak import BleakClient, BleakScanner
+
+
+DEFAULT_DEVICE_NAME = "RLCD-Metrics"
+DEFAULT_STATUS_CHAR_UUID = "9f4af548-1a14-4fc1-8f5a-4b9f00000003"
+DEFAULT_OTA_CONTROL_CHAR_UUID = "9f4af548-1a14-4fc1-8f5a-4b9f00000004"
+DEFAULT_OTA_DATA_CHAR_UUID = "9f4af548-1a14-4fc1-8f5a-4b9f00000005"
+
+
+async def find_device(name: str, address: str | None, timeout: float):
+    devices = await BleakScanner.discover(timeout=timeout)
+    for device in devices:
+        if address and device.address.lower() == address.lower():
+            return device
+        if device.name == name:
+            return device
+    return None
+
+
+def status_callback(_sender, data: bytearray):
+    text = bytes(data).decode("ascii", errors="replace").strip()
+    if text:
+        print(text, flush=True)
+
+
+async def send_ota(args) -> int:
+    firmware = Path(args.firmware).resolve()
+    if not firmware.is_file():
+        print(f"Firmware not found: {firmware}", file=sys.stderr)
+        return 2
+
+    size = firmware.stat().st_size
+    if size <= 0:
+        print(f"Firmware is empty: {firmware}", file=sys.stderr)
+        return 2
+
+    print(f"Scanning for {args.name}...", flush=True)
+    device = await find_device(args.name, args.address, args.scan_timeout)
+    if device is None:
+        print(f"Device not found: {args.name}", file=sys.stderr)
+        return 1
+
+    print(f"Connecting to {device.name} ({device.address})...", flush=True)
+    async with BleakClient(device, timeout=args.connect_timeout) as client:
+        await client.start_notify(args.status_char_uuid, status_callback)
+        print(f"Sending OTA image: {firmware} ({size} bytes)", flush=True)
+
+        try:
+            await asyncio.wait_for(
+                client.write_gatt_char(
+                    args.ota_control_char_uuid,
+                    f"BEGIN,{size}".encode("ascii"),
+                    response=True,
+                ),
+                timeout=args.write_timeout,
+            )
+            await asyncio.sleep(0.5)
+
+            sent = 0
+            last_percent = -1
+            with firmware.open("rb") as handle:
+                while True:
+                    chunk = handle.read(args.chunk_size)
+                    if not chunk:
+                        break
+                    await asyncio.wait_for(
+                        client.write_gatt_char(
+                            args.ota_data_char_uuid,
+                            chunk,
+                            response=args.write_with_response,
+                        ),
+                        timeout=args.write_timeout,
+                    )
+                    sent += len(chunk)
+                    percent = int(sent * 100 / size)
+                    if percent != last_percent and (percent % 5 == 0 or percent == 100):
+                        print(f"OTA progress: {percent}% ({sent}/{size})", flush=True)
+                        last_percent = percent
+                    if args.chunk_delay > 0:
+                        await asyncio.sleep(args.chunk_delay)
+
+            await asyncio.wait_for(
+                client.write_gatt_char(args.ota_control_char_uuid, b"END", response=True),
+                timeout=args.write_timeout,
+            )
+        except Exception:
+            try:
+                await client.write_gatt_char(args.ota_control_char_uuid, b"ABORT", response=True)
+            except Exception:
+                pass
+            raise
+
+        print("OTA image sent. Waiting for board reboot notice...", flush=True)
+        await asyncio.sleep(args.finish_wait)
+
+    return 0
+
+
+def parse_args():
+    default_firmware = Path(__file__).resolve().parents[2] / "build" / "rlcd_clock.bin"
+    parser = argparse.ArgumentParser(description="Send RLCD firmware over BLE OTA.")
+    parser.add_argument("--firmware", default=str(default_firmware))
+    parser.add_argument("--name", default=DEFAULT_DEVICE_NAME)
+    parser.add_argument("--address", default=None)
+    parser.add_argument("--status-char-uuid", default=DEFAULT_STATUS_CHAR_UUID)
+    parser.add_argument("--ota-control-char-uuid", default=DEFAULT_OTA_CONTROL_CHAR_UUID)
+    parser.add_argument("--ota-data-char-uuid", default=DEFAULT_OTA_DATA_CHAR_UUID)
+    parser.add_argument("--chunk-size", type=int, default=180)
+    parser.add_argument("--chunk-delay", type=float, default=0.01)
+    parser.add_argument("--write-timeout", type=float, default=10.0)
+    parser.add_argument("--write-with-response", action="store_true")
+    parser.add_argument("--scan-timeout", type=float, default=20.0)
+    parser.add_argument("--connect-timeout", type=float, default=20.0)
+    parser.add_argument("--finish-wait", type=float, default=8.0)
+    return parser.parse_args()
+
+
+def main() -> int:
+    if os.name != "nt":
+        print("This helper is tuned for the current Windows BLE setup.", file=sys.stderr)
+    args = parse_args()
+    return asyncio.run(send_ota(args))
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())
diff --git a/tools/pc-metrics/install-ble-autostart.ps1 b/tools/pc-metrics/install-ble-autostart.ps1
new file mode 100644
index 0000000..f167cf6
--- /dev/null
+++ b/tools/pc-metrics/install-ble-autostart.ps1
@@ -0,0 +1,51 @@
+param(
+    [string]$TaskName = "RLCD Metrics BLE",
+    [double]$IntervalSeconds = 1,
+    [int]$StartupDelaySeconds = 20
+)
+
+$ErrorActionPreference = "Stop"
+
+$scriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path
+$startScript = Join-Path $scriptDir "start-ble-metrics.ps1"
+
+if (-not (Test-Path $startScript)) {
+    throw "Cannot find start script: $startScript"
+}
+
+$currentUser = [System.Security.Principal.WindowsIdentity]::GetCurrent().Name
+$powershellExe = Join-Path $env:SystemRoot "System32\WindowsPowerShell\v1.0\powershell.exe"
+$quotedStartScript = '"' + $startScript + '"'
+$actionArgs = "-NoProfile -ExecutionPolicy Bypass -File $quotedStartScript -IntervalSeconds $IntervalSeconds"
+
+$action = New-ScheduledTaskAction -Execute $powershellExe -Argument $actionArgs
+$trigger = New-ScheduledTaskTrigger -AtLogOn -User $currentUser
+if ($StartupDelaySeconds -gt 0) {
+    $trigger.Delay = "PT${StartupDelaySeconds}S"
+}
+
+$settings = New-ScheduledTaskSettingsSet `
+    -AllowStartIfOnBatteries `
+    -DontStopIfGoingOnBatteries `
+    -StartWhenAvailable `
+    -MultipleInstances IgnoreNew
+
+$principal = New-ScheduledTaskPrincipal `
+    -UserId $currentUser `
+    -LogonType Interactive `
+    -RunLevel Limited
+
+Register-ScheduledTask `
+    -TaskName $TaskName `
+    -Action $action `
+    -Trigger $trigger `
+    -Settings $settings `
+    -Principal $principal `
+    -Description "Start the RLCD BLE metrics bridge when the current Windows user logs on." `
+    -Force | Out-Null
+
+Start-ScheduledTask -TaskName $TaskName
+
+Write-Host "Installed scheduled task: $TaskName"
+Write-Host "User: $currentUser"
+Write-Host "Start script: $startScript"
diff --git a/tools/pc-metrics/push-metrics-ble.py b/tools/pc-metrics/push-metrics-ble.py
index 3ede5da..7389fbc 100644
--- a/tools/pc-metrics/push-metrics-ble.py
+++ b/tools/pc-metrics/push-metrics-ble.py
@@ -1059,8 +1059,34 @@ async def push_loop(args) -> int:
 
     def status_callback(_sender, data: bytearray):
         text = bytes(data).decode("ascii", errors="replace").strip()
-        if text:
-            print(f"BLE status: {text}", flush=True)
+        if not text:
+            return
+
+        if text.startswith("STA2,"):
+            parts = text.split(",")
+            if len(parts) >= 10:
+                try:
+                    battery = int(parts[2])
+                    battery_mv = int(parts[3])
+                    temperature_c10 = int(parts[4])
+                    humidity = int(parts[5])
+                    writes = int(parts[6])
+                    uptime = int(parts[7])
+                    internal_heap_kb = int(parts[8])
+                    psram_kb = int(parts[9])
+                    print(
+                        "BLE board: "
+                        f"bat={battery}% {battery_mv}mV "
+                        f"env={temperature_c10 / 10:.1f}C/{humidity}% "
+                        f"writes={writes} up={uptime}s "
+                        f"heap={internal_heap_kb}K psram={psram_kb}K",
+                        flush=True,
+                    )
+                    return
+                except ValueError:
+                    pass
+
+        print(f"BLE status: {text}", flush=True)
 
     while True:
         print(f"Scanning for {args.name}...", flush=True)
diff --git a/tools/pc-metrics/send-ble-ota.ps1 b/tools/pc-metrics/send-ble-ota.ps1
new file mode 100644
index 0000000..7d8d243
--- /dev/null
+++ b/tools/pc-metrics/send-ble-ota.ps1
@@ -0,0 +1,40 @@
+param(
+    [string]$Firmware = "",
+    [string]$Name = "RLCD-Metrics",
+    [int]$ChunkSize = 180,
+    [double]$ChunkDelay = 0.01,
+    [switch]$WriteWithResponse
+)
+
+$ErrorActionPreference = "Stop"
+
+$scriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path
+$venvDir = Join-Path $scriptDir ".venv-ble"
+$venvPythonExe = Join-Path $venvDir "Scripts\python.exe"
+$requirements = Join-Path $scriptDir "requirements-ble.txt"
+$otaScript = Join-Path $scriptDir "ble-ota.py"
+
+if (-not $Firmware) {
+    $Firmware = Join-Path (Split-Path -Parent (Split-Path -Parent $scriptDir)) "build\rlcd_clock.bin"
+}
+
+if (-not (Test-Path $venvPythonExe)) {
+    python -m venv $venvDir
+    & $venvPythonExe -m pip install --upgrade pip
+    & $venvPythonExe -m pip install -r $requirements
+}
+
+$args = @(
+    "-u",
+    $otaScript,
+    "--firmware", $Firmware,
+    "--name", $Name,
+    "--chunk-size", $ChunkSize,
+    "--chunk-delay", $ChunkDelay
+)
+
+if ($WriteWithResponse) {
+    $args += "--write-with-response"
+}
+
+& $venvPythonExe @args
diff --git a/tools/pc-metrics/uninstall-ble-autostart.ps1 b/tools/pc-metrics/uninstall-ble-autostart.ps1
new file mode 100644
index 0000000..d9b1dca
--- /dev/null
+++ b/tools/pc-metrics/uninstall-ble-autostart.ps1
@@ -0,0 +1,14 @@
+param(
+    [string]$TaskName = "RLCD Metrics BLE"
+)
+
+$ErrorActionPreference = "Stop"
+
+$task = Get-ScheduledTask -TaskName $TaskName -ErrorAction SilentlyContinue
+if ($null -eq $task) {
+    Write-Host "Scheduled task is not installed: $TaskName"
+    exit 0
+}
+
+Unregister-ScheduledTask -TaskName $TaskName -Confirm:$false
+Write-Host "Removed scheduled task: $TaskName"