diff --git a/firmware/cyd/VERSION.txt b/firmware/cyd/VERSION.txt
index c881c19..4b72310 100644
--- a/firmware/cyd/VERSION.txt
+++ b/firmware/cyd/VERSION.txt
@@ -1,5 +1,5 @@
 name: CYD TF card + touch speaker (cyd)
-git: 01c5266
+git: 8a29196
 date: 2026-10-17
 board: ESP32-2432S028R (ILI9341)
 features: TF/SD info, SoftSPI touch, GPIO26 speaker
@@ -12,5 +12,5 @@ offsets:
 sha256:
   bootloader.bin  3D234A7471F67B013686DABD4DEE7C1FA915C9928463616A94BC9297ACF1ABF8
   boot_app0.bin   F94C5D786A7A8FAB06AC5D10E33BF37711A6697636DC037559EA19CC410A17F0
-  firmware.bin    94A0C3011B584646E8D4F4D29531252E97B488BBE47827DEDD2CDB21FD1FA76F
+  firmware.bin    71D6F25E57435D8D3EAE086122BD459C0ECEFA6CBEB78065C653F580EC787545
   partitions.bin  148B959CBFF1C38AA8E1D5C0BA9D612C54997B945E56A63F41223EEF650653A1
diff --git a/firmware/cyd/firmware.bin b/firmware/cyd/firmware.bin
index 46805af..a0e38be 100644
Binary files a/firmware/cyd/firmware.bin and b/firmware/cyd/firmware.bin differ
diff --git a/src/touch.cpp b/src/touch.cpp
index 7e8b8e8..0140ab4 100644
--- a/src/touch.cpp
+++ b/src/touch.cpp
@@ -4,21 +4,13 @@
 #include <Arduino.h>
 
 /**
- * SoftSPI XPT2046 — 对齐 Sunton 官方板级（esp32-2432S028R.json / smartdisplay）：
- *   TOUCH_SWAP_XY=false, TOUCH_MIRROR_X=true, TOUCH_MIRROR_Y=false
- *   x_max=240, y_max=320
- *   X 通道 CMD=0xD1, Y 通道 CMD=0x91（与 PaulStoffregen 命名相反）
- *   线性：coord = adc * max / 4096，再 mirror_x
- * 显示仍用 create(240,320)+LV_DISPLAY_ROTATION_270（横屏，勿改 320x240）
- *
- * 用户日志：红点在手指左下方 → UI 需向右上修正（见 TOUCH_UI_DX/DY）
- * https://github.com/rzeldent/platformio-espressif32-sunton/blob/main/esp32-2432S028R.json
+ * SoftSPI XPT2046 — Sunton esp32-2432S028R 官方通道 + 线性映射
+ *   X CMD=0xD1, Y CMD=0x91, scale /4096 → 240x320
+ * SoftSPI 与官方 HW SPI 极性不同：不做 MIRROR_X（日志证明 mirror 会把 UI Y 压到顶部）
+ * 显示：240x320 + LV_DISPLAY_ROTATION_270；触点直接喂物理坐标，由 LVGL 旋转
+ * 板级：https://github.com/rzeldent/platformio-espressif32-sunton
  */
 
-// 红点相对手指的补偿（像素，横屏 UI）：左偏→+X，下偏→-Y
-static constexpr int16_t TOUCH_UI_DX = 45;
-static constexpr int16_t TOUCH_UI_DY = -45;
-
 int16_t g_dbg_phys_x = -1;
 int16_t g_dbg_phys_y = -1;
 int16_t g_dbg_logic_x = -1;
@@ -67,12 +59,10 @@ void touch_init() {
   pinMode(CYD_TOUCH_IRQ, INPUT);
   digitalWrite(CYD_TOUCH_CS, HIGH);
   digitalWrite(CYD_TOUCH_CLK, LOW);
-  Serial.printf("Touch: Sunton official mirror_x + UI corr(%d,%d)\n",
-                (int)TOUCH_UI_DX, (int)TOUCH_UI_DY);
+  Serial.println("Touch: Sunton 0xD1/0x91 linear, SoftSPI no-mirror");
 }
 
 void touch_read_cb(lv_indev_t * /*indev*/, lv_indev_data_t *data) {
-  // 官方驱动：X=0xD1, Y=0x91（先丢弃一次噪声读）
   (void)xpt_read(0xD1);
   uint16_t adc_x = xpt_read(0xD1);
   uint16_t adc_y = xpt_read(0x91);
@@ -89,13 +79,9 @@ void touch_read_cb(lv_indev_t * /*indev*/, lv_indev_data_t *data) {
     return;
   }
 
-  // esp_touch_xpt2046: (adc>>3 等价 12bit) * max / 4096
   int16_t px = (int16_t)(((uint32_t)adc_x * SCREEN_WIDTH) / 4096);
   int16_t py = (int16_t)(((uint32_t)adc_y * SCREEN_HEIGHT) / 4096);
 
-  // TOUCH_MIRROR_X=true
-  px = (int16_t)((SCREEN_WIDTH - 1) - px);
-
   if (px < 0) {
     px = 0;
   }
@@ -109,26 +95,9 @@ void touch_read_cb(lv_indev_t * /*indev*/, lv_indev_data_t *data) {
     py = SCREEN_HEIGHT - 1;
   }
 
-  // LVGL ROTATION_270 后 UI：(py, 239-px)；再按日志把红点挪向手指
-  int16_t ui_x = (int16_t)(py + TOUCH_UI_DX);
-  int16_t ui_y = (int16_t)(((SCREEN_WIDTH - 1) - px) + TOUCH_UI_DY);
-
-  if (ui_x < 0) {
-    ui_x = 0;
-  }
-  if (ui_y < 0) {
-    ui_y = 0;
-  }
-  if (ui_x >= UI_HOR_RES) {
-    ui_x = UI_HOR_RES - 1;
-  }
-  if (ui_y >= UI_VER_RES) {
-    ui_y = UI_VER_RES - 1;
-  }
-
-  // 反变换喂给 LVGL，使其变换后落到 (ui_x, ui_y)
-  const int16_t feed_x = (int16_t)((SCREEN_WIDTH - 1) - ui_y);
-  const int16_t feed_y = ui_x;
+  // LVGL 270 后预估 UI（红点）；触点仍喂物理坐标
+  const int16_t ui_x = py;
+  const int16_t ui_y = (int16_t)((SCREEN_WIDTH - 1) - px);
 
   g_dbg_phys_x = px;
   g_dbg_phys_y = py;
@@ -139,11 +108,11 @@ void touch_read_cb(lv_indev_t * /*indev*/, lv_indev_data_t *data) {
   static uint32_t last_log = 0;
   if (millis() - last_log > 100) {
     last_log = millis();
-    Serial.printf("Touch adc(%u,%u) phys(%d,%d) UI(%d,%d) feed(%d,%d)\n", adc_x,
-                  adc_y, px, py, ui_x, ui_y, feed_x, feed_y);
+    Serial.printf("Touch adc(%u,%u) phys(%d,%d) UI~(%d,%d)\n", adc_x, adc_y, px,
+                  py, ui_x, ui_y);
   }
 
-  data->point.x = feed_x;
-  data->point.y = feed_y;
+  data->point.x = px;
+  data->point.y = py;
   data->state = LV_INDEV_STATE_PRESSED;
 }