diff --git a/boards.txt b/boards.txt
index ceb0dc63d02..34c35044ca5 100644
--- a/boards.txt
+++ b/boards.txt
@@ -40993,7 +40993,7 @@ sensebox_mcu_esp32s2.menu.PartitionScheme.tinyuf2=TinyUF2 4MB (1.3MB APP/960KB F
 sensebox_mcu_esp32s2.menu.PartitionScheme.tinyuf2.build.custom_bootloader=bootloader-tinyuf2
 sensebox_mcu_esp32s2.menu.PartitionScheme.tinyuf2.build.custom_partitions=partitions-4MB-tinyuf2
 sensebox_mcu_esp32s2.menu.PartitionScheme.tinyuf2.upload.maximum_size=1441792
-sensebox_mcu_esp32s2.menu.PartitionScheme.tinyuf2.upload.extra_flags=0x2d0000 "{runtime.platform.path}/variants/{build.variant}/tinyuf2.bin"
+sensebox_mcu_esp32s2.menu.PartitionScheme.tinyuf2.upload.extra_flags=0x2d0000 "{runtime.platform.path}/variants/{build.variant}/tinyuf2.bin" 0x170000 "{runtime.platform.path}/variants/{build.variant}/APOTA.bin"
 sensebox_mcu_esp32s2.menu.PartitionScheme.default=Default 4MB with spiffs (1.2MB APP/1.5MB SPIFFS)
 sensebox_mcu_esp32s2.menu.PartitionScheme.default.build.partitions=default
 sensebox_mcu_esp32s2.menu.PartitionScheme.defaultffat=Default 4MB with ffat (1.2MB APP/1.5MB FATFS)
diff --git a/variants/sensebox_mcu_esp32s2/APOTA.bin b/variants/sensebox_mcu_esp32s2/APOTA.bin
new file mode 100644
index 00000000000..0ea39335dce
Binary files /dev/null and b/variants/sensebox_mcu_esp32s2/APOTA.bin differ
diff --git a/variants/sensebox_mcu_esp32s2/APOTA.ino b/variants/sensebox_mcu_esp32s2/APOTA.ino
new file mode 100644
index 00000000000..5f683752abc
--- /dev/null
+++ b/variants/sensebox_mcu_esp32s2/APOTA.ino
@@ -0,0 +1,283 @@
+#define DISPLAY_ENABLED
+
+#include <WiFi.h>
+#include <WebServer.h>
+#include <ESPmDNS.h>
+#include <WiFiAP.h>
+#include <Update.h>
+#include <Wire.h>
+#ifdef DISPLAY_ENABLED
+#define SCREEN_WIDTH  128
+#define SCREEN_HEIGHT 64
+#define OLED_RESET    -1
+#include <Adafruit_GFX.h>
+#include <Adafruit_SSD1306.h>
+Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
+#include <Adafruit_NeoPixel.h>
+Adafruit_NeoPixel rgb_led_1 = Adafruit_NeoPixel(1, 1, NEO_GRB + NEO_KHZ800);
+
+#endif
+#include "esp_partition.h"
+#include "esp_ota_ops.h"
+#include "esp_system.h"
+
+String ssid;
+uint8_t mac[6];
+
+// Create an instance of the server
+WebServer server(80);
+bool displayEnabled;
+
+const int BUTTON_PIN = 0;                       // GPIO for the button
+volatile unsigned long lastPressTime = 0;       // Time of last button press
+volatile bool doublePressDetected = false;      // Flag for double press
+const unsigned long doublePressInterval = 500;  // Max. time (in ms) between two presses for double press
+volatile int pressCount = 0;                    // Counts the button presses
+
+const unsigned char epd_bitmap_wifi[] PROGMEM = {
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x1f, 0x80, 0x00, 0x00, 0x00, 0x01, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x07, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x1f, 0xe0, 0xff, 0x00, 0x00,
+  0x00, 0x3f, 0x00, 0x0f, 0x80, 0x00, 0x00, 0x7c, 0x00, 0x03, 0xe0, 0x00, 0x00, 0xf0, 0x00, 0x01, 0xf0, 0x00, 0x01, 0xe0, 0x00, 0x00, 0x78, 0x00,
+  0x03, 0xc0, 0x00, 0x00, 0x38, 0x00, 0x07, 0x80, 0x00, 0x00, 0x1c, 0x00, 0x0f, 0x00, 0x06, 0x00, 0x0e, 0x00, 0x0e, 0x00, 0x7f, 0xe0, 0x0e, 0x00,
+  0x0c, 0x01, 0xff, 0xf0, 0x06, 0x00, 0x00, 0x07, 0xff, 0xfc, 0x02, 0x00, 0x00, 0x0f, 0x80, 0x3e, 0x00, 0x00, 0x00, 0x1f, 0x00, 0x0f, 0x00, 0x00,
+  0x00, 0x1c, 0x00, 0x07, 0x80, 0x00, 0x00, 0x38, 0x00, 0x03, 0xc0, 0x00, 0x00, 0x70, 0x00, 0x01, 0xc0, 0x00, 0x00, 0x70, 0x00, 0x00, 0xc0, 0x00,
+  0x00, 0x20, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x1f, 0x80, 0x00, 0x00, 0x00, 0x00, 0x7f, 0xc0, 0x00, 0x00, 0x00, 0x00, 0xff, 0xe0, 0x00, 0x00,
+  0x00, 0x01, 0xe0, 0xf0, 0x00, 0x00, 0x00, 0x01, 0xc0, 0x78, 0x00, 0x00, 0x00, 0x03, 0x80, 0x38, 0x00, 0x00, 0x00, 0x01, 0x00, 0x10, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+
+// 'checkmark', 44x44px
+const unsigned char epd_bitmap_checkmark[] PROGMEM = {
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x01, 0x80, 0x00, 0x00, 0x00, 0x00, 0x03, 0x80, 0x00, 0x00, 0x00, 0x00, 0x07, 0x80, 0x00, 0x00, 0x00, 0x00, 0x0f, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x78, 0x00, 0x00, 0x00, 0x0e, 0x00, 0xf0, 0x00, 0x00,
+  0x00, 0x0f, 0x01, 0xe0, 0x00, 0x00, 0x00, 0x0f, 0x83, 0xc0, 0x00, 0x00, 0x00, 0x07, 0xc7, 0x80, 0x00, 0x00, 0x00, 0x03, 0xef, 0x00, 0x00, 0x00,
+  0x00, 0x01, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x78, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+
+void IRAM_ATTR handleButtonPress() {
+  unsigned long currentTime = millis();  // Get current time
+
+  // Debounce: If the current press is too close to the last one, ignore it
+  if (currentTime - lastPressTime > 50) {
+    pressCount++;  // Count the button press
+
+    // Check if this is the second press within the double-press interval
+    if (pressCount == 2 && (currentTime - lastPressTime <= doublePressInterval)) {
+      doublePressDetected = true;  // Double press detected
+      pressCount = 0;              // Reset counter
+    }
+
+    lastPressTime = currentTime;  // Update the time of the last press
+  }
+}
+
+// Function to switch the boot partition to OTA1
+void setBootPartitionToOTA0() {
+  const esp_partition_t *ota0_partition = esp_partition_find_first(ESP_PARTITION_TYPE_APP, ESP_PARTITION_SUBTYPE_APP_OTA_0, NULL);
+
+  if (ota0_partition) {
+    // Set OTA1 as new boot partition
+    esp_ota_set_boot_partition(ota0_partition);
+    Serial.println("Boot partition changed to OTA0. Restarting...");
+
+    // Restart to boot from the new partition
+    esp_restart();
+  } else {
+    Serial.println("OTA1 partition not found!");
+  }
+}
+
+void setupDisplay() {
+  displayEnabled = display.begin(SSD1306_SWITCHCAPVCC, 0x3D);
+  if (displayEnabled) {
+    display.display();
+    delay(100);
+    display.clearDisplay();
+  }
+}
+
+void displayStatusBar(int progress) {
+  display.clearDisplay();
+  display.setCursor(24, 8);
+  display.println("Sketch wird");
+  display.setCursor(22, 22);
+  display.println("hochgeladen!");
+
+  display.fillRect(0, SCREEN_HEIGHT - 24, SCREEN_WIDTH - 4, 8, BLACK);  // Clear status bar area
+  display.drawRect(0, SCREEN_HEIGHT - 24, SCREEN_WIDTH - 4, 8, WHITE);  // Draw border
+  int filledWidth = (progress * SCREEN_WIDTH - 4) / 100;                // Calculate progress width
+  display.fillRect(1, SCREEN_HEIGHT - 23, filledWidth - 4, 6, WHITE);   // Fill progress bar
+
+  display.setCursor((SCREEN_WIDTH / 2) - 12, SCREEN_HEIGHT - 10);
+  display.setTextSize(1);
+  display.setTextColor(WHITE, BLACK);
+  display.print(progress);
+  display.println(" %");
+  display.display();
+}
+
+void displayWelcomeScreen() {
+  display.clearDisplay();
+
+  // Draw WiFi symbol
+  display.drawBitmap(0, 12, epd_bitmap_wifi, 44, 44, WHITE);
+
+  // Display SSID text
+  display.setCursor(40, 13);
+  display.setTextSize(1);
+  display.setTextColor(WHITE, BLACK);
+  display.println("Verbinde dich");  // "Connect"
+  display.setCursor(60, 27);
+  display.println("mit:");  // "with"
+
+  // Display SSID
+  display.setCursor(40, 43);
+  display.setTextSize(1);  // Larger text for SSID
+  display.print(ssid);
+
+  display.display();
+}
+
+void displaySuccessScreen() {
+  display.clearDisplay();
+
+  // Draw WiFi symbol
+  display.drawBitmap(0, 12, epd_bitmap_checkmark, 44, 44, WHITE);
+
+  // Display SSID text
+  display.setCursor(48, 22);
+  display.setTextSize(1);
+  display.setTextColor(WHITE, BLACK);
+  display.println("Erfolgreich");  // "Successfully"
+  display.setCursor(48, 36);
+  display.println("hochgeladen!");  // "uploaded!"
+
+  display.display();
+}
+
+void wipeDisplay() {
+  display.clearDisplay();
+  display.println("");
+  display.display();
+}
+
+void setupWiFi() {
+  WiFi.macAddress(mac);
+  char macLastFour[5];
+  snprintf(macLastFour, sizeof(macLastFour), "%02X%02X", mac[4], mac[5]);
+  ssid = "senseBox:" + String(macLastFour);
+
+  // Define the IP address, gateway, and subnet mask
+  IPAddress local_IP(192, 168, 1, 1);  // The new IP address
+  IPAddress gateway(192, 168, 1, 1);   // Gateway address (can be the same as the AP's IP)
+  IPAddress subnet(255, 255, 255, 0);  // Subnet mask
+
+  // Set the IP address, gateway, and subnet mask of the access point
+  WiFi.softAPConfig(local_IP, gateway, subnet);
+
+  // Start the access point
+  WiFi.softAP(ssid.c_str());
+}
+
+void setupOTA() {
+  // Handle updating process
+  server.on(
+    "/sketch", HTTP_POST,
+    []() {
+      server.sendHeader("Connection", "close");
+      server.send(200, "text/plain", (Update.hasError()) ? "FAIL" : "OK");
+      ESP.restart();
+    },
+    []() {
+      HTTPUpload &upload = server.upload();
+
+      if (upload.status == UPLOAD_FILE_START) {
+        Serial.setDebugOutput(true);
+        size_t fsize = UPDATE_SIZE_UNKNOWN;
+        if (server.clientContentLength() > 0) {
+          fsize = server.clientContentLength();
+        }
+        Serial.printf("Receiving Update: %s, Size: %d\n", upload.filename.c_str(), fsize);
+
+        Serial.printf("Update: %s\n", upload.filename.c_str());
+        if (!Update.begin(fsize)) {  //start with max available size
+          Update.printError(Serial);
+        }
+      } else if (upload.status == UPLOAD_FILE_WRITE) {
+        /* flashing firmware to ESP*/
+        if (Update.write(upload.buf, upload.currentSize) != upload.currentSize) {
+          Update.printError(Serial);
+        } else {
+          int progress = (Update.progress() * 100) / Update.size();
+          displayStatusBar(progress);  // Update progress on status bar
+        }
+      } else if (upload.status == UPLOAD_FILE_END) {
+        if (Update.end(true)) {  //true to set the size to the current progress
+          displaySuccessScreen();
+          delay(3000);
+          wipeDisplay();
+        } else {
+          Update.printError(Serial);
+        }
+        Serial.setDebugOutput(false);
+      }
+      yield();
+    }
+  );
+}
+
+void setup() {
+  // Start Serial communication
+  Serial.begin(115200);
+  rgb_led_1.begin();
+  rgb_led_1.setBrightness(30);
+  rgb_led_1.setPixelColor(0, rgb_led_1.Color(51, 51, 255));
+  rgb_led_1.show();
+
+  // Configure button pin as input
+  pinMode(BUTTON_PIN, INPUT_PULLUP);
+
+  // Interrupt for the button
+  attachInterrupt(digitalPinToInterrupt(BUTTON_PIN), handleButtonPress, FALLING);
+
+#ifdef DISPLAY_ENABLED
+  setupDisplay();
+#endif
+  setupWiFi();
+  // Set the ESP32 as an access point
+  setupOTA();
+  server.begin();
+}
+
+void loop() {
+  // Handle client requests
+  server.handleClient();
+
+#ifdef DISPLAY_ENABLED
+  displayWelcomeScreen();
+#endif
+
+  if (doublePressDetected) {
+    Serial.println("Doppeldruck erkannt!");  // "Double press detected!"
+    setBootPartitionToOTA0();
+#ifdef DISPLAY_ENABLED
+    display.setCursor(0, 0);
+    display.setTextSize(1);
+    display.setTextColor(WHITE, BLACK);
+    display.println("");
+    display.display();
+    delay(50);
+#endif
+    // Restart to boot from the new partition
+    esp_restart();
+  }
+}
diff --git a/variants/sensebox_mcu_esp32s2/variant.cpp b/variants/sensebox_mcu_esp32s2/variant.cpp
index 0c58ef2cbe2..aa1eb3dc7c5 100644
--- a/variants/sensebox_mcu_esp32s2/variant.cpp
+++ b/variants/sensebox_mcu_esp32s2/variant.cpp
@@ -1,29 +1,10 @@
-/*
- * The MIT License (MIT)
- *
- * Copyright (c) 2021 Ha Thach (tinyusb.org) for Adafruit Industries
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
 #include "esp32-hal-gpio.h"
 #include "pins_arduino.h"
+#include "esp_partition.h"
+#include "esp_system.h"
+#include "esp_ota_ops.h"
+#include "esp_log.h"
+#include <esp_chip_info.h>
 
 extern "C" {
 
@@ -41,12 +22,51 @@ void initVariant(void) {
   pinMode(PIN_XB1_ENABLE, OUTPUT);
   digitalWrite(PIN_XB1_ENABLE, LOW);
 
-  //enable UART by default
-  pinMode(PIN_UART_ENABLE, OUTPUT);
-  digitalWrite(PIN_UART_ENABLE, LOW);
+  //enable UART only for chip without PSRAM
+  esp_chip_info_t chip_info;
+  esp_chip_info(&chip_info);
+  if (chip_info.revision <= 0) {
+    pinMode(PIN_UART_ENABLE, OUTPUT);
+    digitalWrite(PIN_UART_ENABLE, LOW);
+  }
 
   //enable PD-Sensor by default
   pinMode(PD_ENABLE, OUTPUT);
   digitalWrite(PD_ENABLE, HIGH);
+
+  // define button pin
+  const int PIN_BUTTON = 0;
+  pinMode(PIN_BUTTON, INPUT_PULLUP);
+
+  // keep button pressed
+  unsigned long pressStartTime = 0;
+  bool buttonPressed = false;
+
+  // Wait 5 seconds for the button to be pressed
+  unsigned long startTime = millis();
+
+  // Check if button is pressed
+  while (millis() - startTime < 5000) {
+    if (digitalRead(PIN_BUTTON) == LOW) {
+      if (!buttonPressed) {
+        // The button was pressed
+        buttonPressed = true;
+      }
+    } else if (buttonPressed) {
+      // When the button is pressed and then released, boot into the OTA1 partition
+      const esp_partition_t *ota1_partition = esp_partition_find_first(ESP_PARTITION_TYPE_APP, ESP_PARTITION_SUBTYPE_APP_OTA_1, NULL);
+
+      if (ota1_partition) {
+        esp_err_t err = esp_ota_set_boot_partition(ota1_partition);
+        if (err == ESP_OK) {
+          esp_restart();  // restart, to boot OTA1 partition
+        } else {
+          ESP_LOGE("OTA", "Error setting OTA1 partition: %s", esp_err_to_name(err));
+        }
+      }
+      // Abort after releasing the button
+      break;
+    }
+  }
 }
 }