diff --git a/boards/esp32_solo1_4M.json b/boards/esp32_solo1_4M.json
index dfc2b039e9..12c667921c 100644
--- a/boards/esp32_solo1_4M.json
+++ b/boards/esp32_solo1_4M.json
@@ -1,9 +1,5 @@
 {
   "build": {
-    "arduino":{
-      "ldscript": "esp32_out.ld",
-      "memory_type": "dio_qspi"
-    },
     "core": "esp32",
     "extra_flags": "-DARDUINO_TASMOTA -DARDUINO_ESP32_DEV -DARDUINO_USB_CDC_ON_BOOT=0 -DESP32_4M -DCORE32SOLO1  -DESP32_CLASSIC",
     "f_cpu": "160000000L",
diff --git a/docs/source/Reference/GPIO.rst b/docs/source/Reference/GPIO.rst
index 101d622646..fd2fd282f4 100644
--- a/docs/source/Reference/GPIO.rst
+++ b/docs/source/Reference/GPIO.rst
@@ -366,9 +366,14 @@ ESP32-C3 SPI flash pins
 
 Pins connected to flash or PSRAM should not be used for anything else.
 
+On boards with embedded flash, these pins cannot be used:
+
 * GPIO-11: Flash voltage selector
 * GPIO-12 ... -17: Connected to flash
 
+On boards with external flash, GPIO-11, GPIO-12 and GPIO-13 can be selected.
+However special care should be taken as some boards can still have these pins wired to the flash chip.
+
 .. note:: By default VDD_SPI is the power supply pin for embedded flash or external flash.  It can only be used as GPIO-11 only when the chip is connected to an external flash, and this flash is powered by an external power supply.
 
 
diff --git a/platformio_core_defs.ini b/platformio_core_defs.ini
index 5f9865833b..52d1bd8ae3 100644
--- a/platformio_core_defs.ini
+++ b/platformio_core_defs.ini
@@ -167,7 +167,7 @@ extra_scripts             = ${esp82xx_common.extra_scripts}
 ; IDF 4.4 = platform-espressif32 3.4.x = espressif/arduino-esp32 tag 2.0.4
 ; Just for those who lost track of the extremely confusing numbering schema.
 ; For MUSTFIX_CLIENT_TIMEOUT_IN_SECONDS See: https://github.com/espressif/arduino-esp32/pull/6676
-[core_esp32_IDF5_1_4__3_0_5_SPIFFS]
+[core_esp32_IDF5_1_4__3_1_0_SPIFFS]
 platform                    = https://github.com/tasmota/platform-espressif32/releases/download/2024.09.10/platform-espressif32.zip
 platform_packages           = framework-arduinoespressif32 @ https://github.com/Jason2866/esp32-arduino-lib-builder/releases/download/3202/framework-arduinoespressif32-all-release_v5.1-41a885b.zip
 build_flags                 = -DESP32_STAGE
@@ -196,9 +196,8 @@ lib_extra_dirs            =
 
 
 ; ESP_IDF 5.3.1
-[core_esp32_IDF5_3_1__3_0_5_LittleFS]
-platform = https://github.com/Jason2866/platform-espressif32.git#Arduino/IDF53
-;platform                  = https://github.com/tasmota/platform-espressif32/releases/download/2024.10.31/platform-espressif32.zip
+[core_esp32_IDF5_3_2__3_1_0_LittleFS]
+platform                    = https://github.com/Jason2866/platform-espressif32.git#Arduino/IDF53
 platform_packages           = framework-arduinoespressif32 @ https://github.com/Jason2866/esp32-arduino-lib-builder/releases/download/3203/framework-arduinoespressif32-all-release_v5.3-ddc10306.zip
 build_flags                 = -DESP32_STAGE
                               -DESP_IDF_VERSION_MAJOR=5
@@ -219,7 +218,7 @@ build_flags                 = -DESP32_STAGE
                               -include "ESPEasy_config.h"
                               -include "esp32x_fixes.h"
                               -Wnull-dereference
-lib_ignore = 
+lib_ignore                = 
 lib_extra_dirs            =
                             lib/lib_ssl
 
diff --git a/platformio_esp32_envs.ini b/platformio_esp32_envs.ini
index 00f2ecd9cc..9c1cf76937 100644
--- a/platformio_esp32_envs.ini
+++ b/platformio_esp32_envs.ini
@@ -6,7 +6,7 @@
 
 
 [esp32_base]
-extends                   = common, core_esp32_IDF5_1_4__3_0_5_SPIFFS
+extends                   = common, core_esp32_IDF5_1_4__3_1_0_SPIFFS
 upload_speed              = 460800
 upload_before_reset       = default_reset
 upload_after_reset        = hard_reset
@@ -19,7 +19,7 @@ extra_scripts             = post:tools/pio/post_esp32.py
 ;                            pre:tools/pio/apply_patches.py
 build_unflags             = -Wall
                             -fno-lto
-build_flags               = ${core_esp32_IDF5_1_4__3_0_5_SPIFFS.build_flags}
+build_flags               = ${core_esp32_IDF5_1_4__3_1_0_SPIFFS.build_flags}
 ;                            ${mqtt_flags.build_flags}
                             -DMQTT_MAX_PACKET_SIZE=2048
                             -DCONFIG_FREERTOS_ASSERT_DISABLE
@@ -30,11 +30,11 @@ build_flags               = ${core_esp32_IDF5_1_4__3_0_5_SPIFFS.build_flags}
                             -DCORE_DEBUG_LEVEL=ARDUHAL_LOG_LEVEL_NONE
 monitor_filters           = esp32_exception_decoder
 lib_ignore                = 
-                            ${core_esp32_IDF5_1_4__3_0_5_SPIFFS.lib_ignore}
+                            ${core_esp32_IDF5_1_4__3_1_0_SPIFFS.lib_ignore}
 
 
 [esp32_base_idf5]
-extends                   = common, core_esp32_IDF5_3_1__3_0_5_LittleFS
+extends                   = common, core_esp32_IDF5_3_2__3_1_0_LittleFS
 upload_speed              = 460800
 upload_before_reset       = default_reset
 upload_after_reset        = hard_reset
@@ -51,7 +51,7 @@ extra_scripts             = post:tools/pio/post_esp32.py
 ; However LTO cannot optimize builds with text section literals and thus will result in quite a lot larger builds (80k - 140k larger)
 build_unflags             = -Wall
                             -fno-lto
-build_flags               = ${core_esp32_IDF5_3_1__3_0_5_LittleFS.build_flags}
+build_flags               = ${core_esp32_IDF5_3_2__3_1_0_LittleFS.build_flags}
 ;                            ${mqtt_flags.build_flags}
                             -DMQTT_MAX_PACKET_SIZE=2048
                             -DCONFIG_FREERTOS_ASSERT_DISABLE
@@ -65,7 +65,7 @@ build_flags               = ${core_esp32_IDF5_3_1__3_0_5_LittleFS.build_flags}
                             -DLWIP_IPV6=1
 monitor_filters           = esp32_exception_decoder
 lib_ignore                = 
-                            ${core_esp32_IDF5_3_1__3_0_5_LittleFS.lib_ignore}
+                            ${core_esp32_IDF5_3_2__3_1_0_LittleFS.lib_ignore}
 
 
 ; -flto cannot be used for ESP32 C3!
@@ -116,7 +116,7 @@ board_build.filesystem    = littlefs
 lib_ignore                = ${esp32_always.lib_ignore}
                             ESP32_ping
                             ESP32 BLE Arduino
-                            ${core_esp32_IDF5_3_1__3_0_5_LittleFS.lib_ignore}
+                            ${core_esp32_IDF5_3_2__3_1_0_LittleFS.lib_ignore}
 
 
 [esp32_IRExt]
diff --git a/platformio_esp32_solo1.ini b/platformio_esp32_solo1.ini
index bb6fbe3ba1..388bcb6eab 100644
--- a/platformio_esp32_solo1.ini
+++ b/platformio_esp32_solo1.ini
@@ -2,12 +2,12 @@
 ; IDF 5.3.1
 [esp32_solo1_common_LittleFS]
 extends                   = esp32_base_idf5
-platform = https://github.com/Jason2866/platform-espressif32.git#Arduino/IDF53
-;platform                  = https://github.com/tasmota/platform-espressif32/releases/download/2024.12.30/platform-espressif32.zip
-platform_packages = framework-arduino-solo1 @ https://github.com/Jason2866/esp32-arduino-lib-builder/releases/download/3204/framework-arduinoespressif32-solo1-release_v5.3-ddc10306.zip
+platform                  = https://github.com/Jason2866/platform-espressif32.git#Arduino/IDF53
+platform_packages         = framework-arduino-solo1 @ https://github.com/Jason2866/esp32-arduino-lib-builder/releases/download/3204/framework-arduinoespressif32-solo1-release_v5.3-ddc10306.zip
 build_flags               = ${esp32_base_idf5.build_flags}
                             -DFEATURE_ARDUINO_OTA=1
                             -DUSE_LITTLEFS
+                            -DCORE32SOLO1
 extra_scripts             = ${esp32_base_idf5.extra_scripts}
 build_unflags             = ${esp32_base_idf5.build_unflags}
                             -fexceptions
diff --git a/src/src/ESPEasyCore/ESPEasy_setup.cpp b/src/src/ESPEasyCore/ESPEasy_setup.cpp
index c825dec171..f328c0756a 100644
--- a/src/src/ESPEasyCore/ESPEasy_setup.cpp
+++ b/src/src/ESPEasyCore/ESPEasy_setup.cpp
@@ -162,8 +162,8 @@ void ESPEasy_setup()
 
     if (pkg_version <= 7) { // D0WD, S0WD, D2WD
 #ifdef CORE32SOLO1
-      gpio_num_t PSRAM_CLK = GPIO_NUM_17;
-      gpio_num_t PSRAM_CS  = GPIO_NUM_16;
+      gpio_num_t PSRAM_CLK = GPIO_NUM_NC; //GPIO_NUM_17;
+      gpio_num_t PSRAM_CS  = GPIO_NUM_NC; //GPIO_NUM_16;
 #else
       gpio_num_t PSRAM_CLK = static_cast<gpio_num_t>(CONFIG_D0WD_PSRAM_CLK_IO);
       gpio_num_t PSRAM_CS  = static_cast<gpio_num_t>(CONFIG_D0WD_PSRAM_CS_IO);
@@ -187,14 +187,18 @@ void ESPEasy_setup()
       if (PSRAM_CLK != GPIO_NUM_NC) {
         esp_gpio_revoke(BIT64(PSRAM_CLK) | BIT64(PSRAM_CS));
       } else {
-        esp_gpio_revoke(BIT64(PSRAM_CS));
+        if (PSRAM_CS != GPIO_NUM_NC) {
+          esp_gpio_revoke(BIT64(PSRAM_CS));
+        }
       }
 #  endif // if ESP_IDF_VERSION > ESP_IDF_VERSION_VAL(5, 2, 0)
 
       if (PSRAM_CLK != GPIO_NUM_NC) {
         gpio_reset_pin(PSRAM_CLK);
       }
-      gpio_reset_pin(PSRAM_CS);
+      if (PSRAM_CS != GPIO_NUM_NC) {
+        gpio_reset_pin(PSRAM_CS);
+      }
     }
   }
 # endif  // if CONFIG_IDF_TARGET_ESP32
@@ -359,6 +363,7 @@ void ESPEasy_setup()
   #endif // ifndef BUILD_NO_RAM_TRACKER
 
 #ifdef ESP32
+#ifndef CORE32SOLO1
 
   // Configure dynamic frequency scaling:
   // maximum and minimum frequencies are set in sdkconfig,
@@ -373,6 +378,7 @@ void ESPEasy_setup()
 # endif // if CONFIG_FREERTOS_USE_TICKLESS_IDLE
   };
   esp_pm_configure(&pm_config);
+#endif
 #endif // ifdef ESP32
 
 
diff --git a/src/src/Helpers/Hardware_GPIO.cpp b/src/src/Helpers/Hardware_GPIO.cpp
index e170d212dc..e1a9412c72 100644
--- a/src/src/Helpers/Hardware_GPIO.cpp
+++ b/src/src/Helpers/Hardware_GPIO.cpp
@@ -168,17 +168,35 @@ bool getGpioInfo(int gpio, int& pinnr, bool& input, bool& output, bool& warning)
   }
 
   if (gpio == 11) {
-    // By default VDD_SPI is the power supply pin for embedded flash or external flash. It can only be used as GPIO11
-    // only when the chip is connected to an external flash, and this flash is powered by an external power supply
-    input   = false;
-    output  = false;
+    if (getChipFeatures().embeddedFlash) {
+      // See: https://www.letscontrolit.com/forum/viewtopic.php?p=71880#p71874
+      //
+      // By default VDD_SPI is the power supply pin for embedded flash or external flash. 
+      // It can only be used as GPIO11 only when the chip is connected to an 
+      // external flash, and this flash is powered by an external power supply
+      input   = false;
+      output  = false;
+    }
     warning = true;
   }
 
   if (isFlashInterfacePin_ESPEasy(gpio)) {
-    // Connected to the integrated SPI flash.
-    input   = false;
-    output  = false;
+    if (getChipFeatures().embeddedFlash) {
+      // Connected to the integrated SPI flash.
+      input   = false;
+      output  = false;
+    } else {
+      // See: https://www.letscontrolit.com/forum/viewtopic.php?p=71880#p71874
+      if (gpio == 12 || gpio == 13) {
+        // SPIHD/GPIO12
+        // SPIWP/GPIO13
+        if (ESP.getFlashChipMode() != FM_DOUT && 
+            ESP.getFlashChipMode() != FM_DIO) {
+          input   = false;
+          output  = false;
+        }
+      }
+    }
     warning = true;
   }