diff --git a/APP/app_log.c b/APP/app_log.c
index 050c742..656e071 100644
--- a/APP/app_log.c
+++ b/APP/app_log.c
@@ -578,6 +578,85 @@ uint8_t app_log_try_command(const char *cmd)
         app_tm1617_inject_key((uint8_t)key);
         return 1U;
     }
+    /* 测试注入：midi on <note> [vel] / midi off <note>
+     * 直通 Dream（与硅胶弦同一 SendNoteOn/Off 路径），供麦测音高校准 */
+    if (strncmp(cmd, "midi on ", 8) == 0 && cmd[8] != '\0') {
+        char *endp = NULL;
+        unsigned note = (unsigned)strtoul(cmd + 8, &endp, 10);
+        unsigned vel = 100;
+        char line[48];
+        if (endp == cmd + 8 || note > 127U) {
+            SEGGER_RTT_WriteString(APP_LOG_RTT_CHANNEL, "MIDI_ON_BAD\n");
+            return 1U;
+        }
+        while (*endp == ' ')
+            endp++;
+        if (*endp != '\0') {
+            vel = (unsigned)strtoul(endp, NULL, 10);
+            if (vel > 127U)
+                vel = 127U;
+        }
+        SendNoteOnMidiEvent((uint8_t)note, (uint8_t)vel);
+        snprintf(line, sizeof(line), "MIDI_ON_OK note=%u vel=%u\n", note, vel);
+        SEGGER_RTT_WriteString(APP_LOG_RTT_CHANNEL, line);
+        return 1U;
+    }
+    if (strncmp(cmd, "midi off ", 9) == 0 && cmd[9] != '\0') {
+        unsigned note = (unsigned)strtoul(cmd + 9, NULL, 10);
+        char line[40];
+        if (note > 127U) {
+            SEGGER_RTT_WriteString(APP_LOG_RTT_CHANNEL, "MIDI_OFF_BAD\n");
+            return 1U;
+        }
+        SendNoteOffMidiEvent((uint8_t)note, 0);
+        snprintf(line, sizeof(line), "MIDI_OFF_OK note=%u\n", note);
+        SEGGER_RTT_WriteString(APP_LOG_RTT_CHANNEL, line);
+        return 1U;
+    }
+    /* 测试注入：拨弦 string <1..6> [vel|off]
+     * 按当前 USE_MIDI 发与硅胶 N 弦相同的 NoteOn/Off（须先 chord key 装载） */
+    if (strncmp(cmd, "string ", 7) == 0 && cmd[7] != '\0') {
+        char *endp = NULL;
+        unsigned s = (unsigned)strtoul(cmd + 7, &endp, 10);
+        unsigned vel = 100;
+        uint8_t note = 0;
+        char line[56];
+        int do_off = 0;
+
+        if (endp == cmd + 7 || s < 1U || s > 6U) {
+            SEGGER_RTT_WriteString(APP_LOG_RTT_CHANNEL, "STRING_BAD\n");
+            return 1U;
+        }
+        while (*endp == ' ')
+            endp++;
+        if (*endp != '\0') {
+            if (endp[0] == 'o' || endp[0] == 'O')
+                do_off = 1;
+            else {
+                vel = (unsigned)strtoul(endp, NULL, 10);
+                if (vel > 127U)
+                    vel = 127U;
+            }
+        }
+        switch (s) {
+            case 1: note = USE_MIDI.Midi_1; break;
+            case 2: note = USE_MIDI.Midi_2; break;
+            case 3: note = USE_MIDI.Midi_3; break;
+            case 4: note = USE_MIDI.Midi_4; break;
+            case 5: note = USE_MIDI.Midi_5; break;
+            default: note = USE_MIDI.Midi_6; break;
+        }
+        if (do_off) {
+            SendNoteOffMidiEvent(note, 0);
+            snprintf(line, sizeof(line), "STRING_OFF_OK s=%u note=%u\n", s, (unsigned)note);
+        } else {
+            SendNoteOnMidiEvent(note, (uint8_t)vel);
+            snprintf(line, sizeof(line),
+                     "STRING_OK s=%u note=%u vel=%u\n", s, (unsigned)note, vel);
+        }
+        SEGGER_RTT_WriteString(APP_LOG_RTT_CHANNEL, line);
+        return 1U;
+    }
     /* 测试注入：adc key N on|off（0~3；1=独立尾奏键，与万能第4键同路径） */
     if (strncmp(cmd, "adc key ", 8) == 0 && cmd[8] != '\0') {
         unsigned idx = (unsigned)strtoul(cmd + 8, NULL, 10);
diff --git a/Global/Global.c b/Global/Global.c
index c25f1da..8431341 100644
--- a/Global/Global.c
+++ b/Global/Global.c
@@ -101,7 +101,7 @@ int16_t MIC_VOL_MAP[11]= {-9000,-7000,-5000,-3000,-1000,1000,3000,5000,7000,9000
 
 uint8_t TOUCH_AREA_NUM = (sizeof(Touch_Areas)/sizeof(Touch_AreaTypeDef));
 
-const uint8_t Version[3] = {0,2,16}; /* major.minor.patch — 0.2.16: stop accomp on mode/song switch; restore green LEDs; default I chord on boot/preamble */
+const uint8_t Version[3] = {0,2,17}; /* major.minor.patch — 0.2.17: Type-C charge battery icon; BLE timbre/style UI sync via UI task; RTT midi/string inject */
 uint8_t Led = 8;
 bool PressFlag = 0;
 
diff --git a/tools/publish_k1_release.py b/tools/publish_k1_release.py
index 3fda3d5..5dd9677 100644
--- a/tools/publish_k1_release.py
+++ b/tools/publish_k1_release.py
@@ -38,7 +38,7 @@ TONE_HDR = PROJ / "project" / "inc" / "ExtFlash_Tone_Addr.h"
 IAP_DIR = REPO / "升级" / "MCU主控升级"
 OUT_ROOT = REPO / "tools" / "out"
 
-FW_VER = "0.2.16"
+FW_VER = "0.2.17"
 UI0902_RES_BASE = 0x00100000
 BOOT_FLASH_ADDR = 0x08000000
 APP_FLASH_ADDR = 0x08008000