diff --git a/target/ast10x0/BOARDS.md b/target/ast10x0/BOARDS.md
index 38c3035aa..4f1fd3510 100644
--- a/target/ast10x0/BOARDS.md
+++ b/target/ast10x0/BOARDS.md
@@ -34,9 +34,9 @@ GPIO connections should be as follows:
 
 | Raspberry Pi Pin | Target Device | Target Pin     |
 |------------------|---------------|----------------|
-| 23               | A             | SRST (PIN1)    |
+| 27               | A             | SRST (PIN1)    |
 | 18               | A             | FWSPICK (PIN2) |
-| 25               | B             | SRST (PIN1)    |
+| 17               | B             | SRST (PIN1)    |
 | 24               | B             | FWSPICK (PIN2) |
 
 For I2C communication, connect pins 1 and 2 of J15. This links I2C2 between the devices.
diff --git a/target/ast10x0/harness/evb_config.toml b/target/ast10x0/harness/evb_config.toml
index c169c6044..bf155e7d1 100644
--- a/target/ast10x0/harness/evb_config.toml
+++ b/target/ast10x0/harness/evb_config.toml
@@ -2,7 +2,7 @@
 # SPDX-License-Identifier: Apache-2.0
 
 [gpio]
-srst_pin = 23
+srst_pin = 27
 fwspick_pin = 18
 
 [uart]
@@ -10,6 +10,6 @@ serial_port = "/dev/ttyUSB0"
 baudrate = 115200
 
 [device_b]
-srst_pin = 25
+srst_pin = 17
 fwspick_pin = 24
 serial_port = "/dev/ttyUSB1"
diff --git a/target/ast10x0/harness/pi_test_runner.py b/target/ast10x0/harness/pi_test_runner.py
index 9f418f9f4..13290ed88 100644
--- a/target/ast10x0/harness/pi_test_runner.py
+++ b/target/ast10x0/harness/pi_test_runner.py
@@ -32,6 +32,10 @@ def _gpio_set(pin: int, state: str) -> None:
     subprocess.run(["pinctrl", "set", str(pin), "op"] + state.split(), check=True)
 
 
+def _gpio_set_input(pin: int, pull: str) -> None:
+    subprocess.run(["pinctrl", "set", str(pin), "ip", pull], check=True)
+
+
 def _sequence_to_fwspick_mode(
     srst_pin: int, fwspick_pin: int, port: serial.Serial
 ) -> None:
@@ -41,7 +45,7 @@ def _sequence_to_fwspick_mode(
     port.read(4096)
     _gpio_set(fwspick_pin, "pn dh")
     time.sleep(1)
-    _gpio_set(srst_pin, "dh")
+    _gpio_set_input(srst_pin, "pn")
     time.sleep(1)
 
 
diff --git a/target/ast10x0/harness/uart_test_exec.py b/target/ast10x0/harness/uart_test_exec.py
index df4030920..7bcecabdb 100644
--- a/target/ast10x0/harness/uart_test_exec.py
+++ b/target/ast10x0/harness/uart_test_exec.py
@@ -116,10 +116,28 @@ def gpio_set(self, pin: int, state: str):
         except Exception as e:
             raise RuntimeError(f"Failed to set GPIO {pin} to {state}: {e}")
 
+    def gpio_set_input(self, pin: int, pull: str):
+        """Set GPIO pin to input with the given pull using pinctrl."""
+        cmd = ["pinctrl", "set", str(pin), "ip", pull]
+        self.log(f"GPIO {pin}: input ({pull})")
+
+        if self.args.dry_run:
+            self.log(f"DRY RUN: {' '.join(cmd)}")
+            return
+
+        try:
+            self.run_command(cmd)
+        except Exception as e:
+            raise RuntimeError(f"Failed to set GPIO {pin} to input ({pull}): {e}")
+
     def toggle_srst(self, state: str):
-        """Toggle SRST pin (dl=low, dh=high)."""
+        """Drive SRST pin low (state='dl')."""
         self.gpio_set(self.args.srst_pin, state)
 
+    def release_srst(self):
+        """Release SRST pin to input, floating (no pull)."""
+        self.gpio_set_input(self.args.srst_pin, "pn")
+
     def toggle_fwspick(self, state: str):
         """Toggle FWSPICK pin (dh=high, dl=low)."""
         if state == "dh":
@@ -148,7 +166,7 @@ def sequence_to_fwspick_mode(self):
         time.sleep(0.1)
         self.toggle_fwspick("dh")  # FWSPICK high
         time.sleep(1)
-        self.toggle_srst("dh")  # SRST high
+        self.release_srst()
         time.sleep(1)
         self.log("FWSPICK mode sequence complete")
 
@@ -159,7 +177,7 @@ def sequence_to_normal_mode(self):
         time.sleep(0.1)
         self.toggle_srst("dl")  # SRST low
         time.sleep(0.5)
-        self.toggle_srst("dh")  # SRST high
+        self.release_srst()
         time.sleep(2)
         self.log("Normal boot mode sequence complete")
 
@@ -439,7 +457,7 @@ def main():
 
     # GPIO control
     parser.add_argument(
-        "--srst-pin", type=int, default=23, help="SRST GPIO pin number (default: 23)"
+        "--srst-pin", type=int, default=27, help="SRST GPIO pin number (default: 27)"
     )
     parser.add_argument(
         "--fwspick-pin",
@@ -551,8 +569,10 @@ def main():
     try:
         # Handle manual GPIO operations
         if args.manual_srst:
-            state = "dl" if args.manual_srst in ["low", "dl"] else "dh"
-            executor.toggle_srst(state)
+            if args.manual_srst in ["low", "dl"]:
+                executor.toggle_srst("dl")
+            else:
+                executor.release_srst()
             return 0
 
         if args.manual_fwspick:
diff --git a/target/ast10x0/tests/mctp/server/README.md b/target/ast10x0/tests/mctp/server/README.md
index 248d84070..23371c26e 100644
--- a/target/ast10x0/tests/mctp/server/README.md
+++ b/target/ast10x0/tests/mctp/server/README.md
@@ -150,7 +150,7 @@ GPIO pin assignments and serial port paths are defined in
 
 ```toml
 [gpio]
-srst_pin = 23       # BCM pin connected to board A SRST
+srst_pin = 27       # BCM pin connected to board A SRST
 fwspick_pin = 18    # BCM pin connected to board A FWSPICK
 
 [uart]
@@ -158,7 +158,7 @@ serial_port = "/dev/ttyUSB0"   # Board A serial port
 baudrate = 115200
 
 [device_b]
-srst_pin = 25       # BCM pin connected to board B SRST
+srst_pin = 17       # BCM pin connected to board B SRST
 fwspick_pin = 24    # BCM pin connected to board B FWSPICK
 serial_port = "/dev/ttyUSB1"   # Board B serial port
 ```