diff --git a/esphome/components/ota/ota_backend_arduino_esp32.cpp b/esphome/components/ota/ota_backend_arduino_esp32.cpp
index 62c6a72388..15dfc98a6c 100644
--- a/esphome/components/ota/ota_backend_arduino_esp32.cpp
+++ b/esphome/components/ota/ota_backend_arduino_esp32.cpp
@@ -1,14 +1,17 @@
 #ifdef USE_ESP32_FRAMEWORK_ARDUINO
 #include "esphome/core/defines.h"
+#include "esphome/core/log.h"
 
-#include "ota_backend_arduino_esp32.h"
 #include "ota_backend.h"
+#include "ota_backend_arduino_esp32.h"
 
 #include <Update.h>
 
 namespace esphome {
 namespace ota {
 
+static const char *const TAG = "ota.arduino_esp32";
+
 std::unique_ptr<ota::OTABackend> make_ota_backend() { return make_unique<ota::ArduinoESP32OTABackend>(); }
 
 OTAResponseTypes ArduinoESP32OTABackend::begin(size_t image_size) {
@@ -20,6 +23,9 @@ OTAResponseTypes ArduinoESP32OTABackend::begin(size_t image_size) {
   uint8_t error = Update.getError();
   if (error == UPDATE_ERROR_SIZE)
     return OTA_RESPONSE_ERROR_ESP32_NOT_ENOUGH_SPACE;
+
+  ESP_LOGE(TAG, "Begin error: %d", error);
+
   return OTA_RESPONSE_ERROR_UNKNOWN;
 }
 
@@ -27,16 +33,25 @@ void ArduinoESP32OTABackend::set_update_md5(const char *md5) { Update.setMD5(md5
 
 OTAResponseTypes ArduinoESP32OTABackend::write(uint8_t *data, size_t len) {
   size_t written = Update.write(data, len);
-  if (written != len) {
-    return OTA_RESPONSE_ERROR_WRITING_FLASH;
+  if (written == len) {
+    return OTA_RESPONSE_OK;
   }
-  return OTA_RESPONSE_OK;
+
+  uint8_t error = Update.getError();
+  ESP_LOGE(TAG, "Write error: %d", error);
+
+  return OTA_RESPONSE_ERROR_WRITING_FLASH;
 }
 
 OTAResponseTypes ArduinoESP32OTABackend::end() {
-  if (!Update.end())
-    return OTA_RESPONSE_ERROR_UPDATE_END;
-  return OTA_RESPONSE_OK;
+  if (Update.end()) {
+    return OTA_RESPONSE_OK;
+  }
+
+  uint8_t error = Update.getError();
+  ESP_LOGE(TAG, "End error: %d", error);
+
+  return OTA_RESPONSE_ERROR_UPDATE_END;
 }
 
 void ArduinoESP32OTABackend::abort() { Update.abort(); }
diff --git a/esphome/components/ota/ota_backend_arduino_esp8266.cpp b/esphome/components/ota/ota_backend_arduino_esp8266.cpp
index b317075bd0..42edbf5d2b 100644
--- a/esphome/components/ota/ota_backend_arduino_esp8266.cpp
+++ b/esphome/components/ota/ota_backend_arduino_esp8266.cpp
@@ -1,16 +1,19 @@
 #ifdef USE_ARDUINO
 #ifdef USE_ESP8266
-#include "ota_backend.h"
 #include "ota_backend_arduino_esp8266.h"
+#include "ota_backend.h"
 
-#include "esphome/core/defines.h"
 #include "esphome/components/esp8266/preferences.h"
+#include "esphome/core/defines.h"
+#include "esphome/core/log.h"
 
 #include <Updater.h>
 
 namespace esphome {
 namespace ota {
 
+static const char *const TAG = "ota.arduino_esp8266";
+
 std::unique_ptr<ota::OTABackend> make_ota_backend() { return make_unique<ota::ArduinoESP8266OTABackend>(); }
 
 OTAResponseTypes ArduinoESP8266OTABackend::begin(size_t image_size) {
@@ -29,6 +32,9 @@ OTAResponseTypes ArduinoESP8266OTABackend::begin(size_t image_size) {
     return OTA_RESPONSE_ERROR_WRONG_CURRENT_FLASH_CONFIG;
   if (error == UPDATE_ERROR_SPACE)
     return OTA_RESPONSE_ERROR_ESP8266_NOT_ENOUGH_SPACE;
+
+  ESP_LOGE(TAG, "Begin error: %d", error);
+
   return OTA_RESPONSE_ERROR_UNKNOWN;
 }
 
@@ -36,16 +42,25 @@ void ArduinoESP8266OTABackend::set_update_md5(const char *md5) { Update.setMD5(m
 
 OTAResponseTypes ArduinoESP8266OTABackend::write(uint8_t *data, size_t len) {
   size_t written = Update.write(data, len);
-  if (written != len) {
-    return OTA_RESPONSE_ERROR_WRITING_FLASH;
+  if (written == len) {
+    return OTA_RESPONSE_OK;
   }
-  return OTA_RESPONSE_OK;
+
+  uint8_t error = Update.getError();
+  ESP_LOGE(TAG, "Write error: %d", error);
+
+  return OTA_RESPONSE_ERROR_WRITING_FLASH;
 }
 
 OTAResponseTypes ArduinoESP8266OTABackend::end() {
-  if (!Update.end())
-    return OTA_RESPONSE_ERROR_UPDATE_END;
-  return OTA_RESPONSE_OK;
+  if (Update.end()) {
+    return OTA_RESPONSE_OK;
+  }
+
+  uint8_t error = Update.getError();
+  ESP_LOGE(TAG, "End error: %d", error);
+
+  return OTA_RESPONSE_ERROR_UPDATE_END;
 }
 
 void ArduinoESP8266OTABackend::abort() {
diff --git a/esphome/components/ota/ota_backend_arduino_libretiny.cpp b/esphome/components/ota/ota_backend_arduino_libretiny.cpp
index df4e774ebc..6b2cf80684 100644
--- a/esphome/components/ota/ota_backend_arduino_libretiny.cpp
+++ b/esphome/components/ota/ota_backend_arduino_libretiny.cpp
@@ -1,14 +1,17 @@
 #ifdef USE_LIBRETINY
-#include "ota_backend.h"
 #include "ota_backend_arduino_libretiny.h"
+#include "ota_backend.h"
 
 #include "esphome/core/defines.h"
+#include "esphome/core/log.h"
 
 #include <Update.h>
 
 namespace esphome {
 namespace ota {
 
+static const char *const TAG = "ota.arduino_libretiny";
+
 std::unique_ptr<ota::OTABackend> make_ota_backend() { return make_unique<ota::ArduinoLibreTinyOTABackend>(); }
 
 OTAResponseTypes ArduinoLibreTinyOTABackend::begin(size_t image_size) {
@@ -20,6 +23,9 @@ OTAResponseTypes ArduinoLibreTinyOTABackend::begin(size_t image_size) {
   uint8_t error = Update.getError();
   if (error == UPDATE_ERROR_SIZE)
     return OTA_RESPONSE_ERROR_ESP32_NOT_ENOUGH_SPACE;
+
+  ESP_LOGE(TAG, "Begin error: %d", error);
+
   return OTA_RESPONSE_ERROR_UNKNOWN;
 }
 
@@ -27,16 +33,25 @@ void ArduinoLibreTinyOTABackend::set_update_md5(const char *md5) { Update.setMD5
 
 OTAResponseTypes ArduinoLibreTinyOTABackend::write(uint8_t *data, size_t len) {
   size_t written = Update.write(data, len);
-  if (written != len) {
-    return OTA_RESPONSE_ERROR_WRITING_FLASH;
+  if (written == len) {
+    return OTA_RESPONSE_OK;
   }
-  return OTA_RESPONSE_OK;
+
+  uint8_t error = Update.getError();
+  ESP_LOGE(TAG, "Write error: %d", error);
+
+  return OTA_RESPONSE_ERROR_WRITING_FLASH;
 }
 
 OTAResponseTypes ArduinoLibreTinyOTABackend::end() {
-  if (!Update.end())
-    return OTA_RESPONSE_ERROR_UPDATE_END;
-  return OTA_RESPONSE_OK;
+  if (Update.end()) {
+    return OTA_RESPONSE_OK;
+  }
+
+  uint8_t error = Update.getError();
+  ESP_LOGE(TAG, "End error: %d", error);
+
+  return OTA_RESPONSE_ERROR_UPDATE_END;
 }
 
 void ArduinoLibreTinyOTABackend::abort() { Update.abort(); }
diff --git a/esphome/components/ota/ota_backend_arduino_rp2040.cpp b/esphome/components/ota/ota_backend_arduino_rp2040.cpp
index 4448b0c95e..ffeab2e93f 100644
--- a/esphome/components/ota/ota_backend_arduino_rp2040.cpp
+++ b/esphome/components/ota/ota_backend_arduino_rp2040.cpp
@@ -1,16 +1,19 @@
 #ifdef USE_ARDUINO
 #ifdef USE_RP2040
-#include "ota_backend.h"
 #include "ota_backend_arduino_rp2040.h"
+#include "ota_backend.h"
 
 #include "esphome/components/rp2040/preferences.h"
 #include "esphome/core/defines.h"
+#include "esphome/core/log.h"
 
 #include <Updater.h>
 
 namespace esphome {
 namespace ota {
 
+static const char *const TAG = "ota.arduino_rp2040";
+
 std::unique_ptr<ota::OTABackend> make_ota_backend() { return make_unique<ota::ArduinoRP2040OTABackend>(); }
 
 OTAResponseTypes ArduinoRP2040OTABackend::begin(size_t image_size) {
@@ -29,6 +32,9 @@ OTAResponseTypes ArduinoRP2040OTABackend::begin(size_t image_size) {
     return OTA_RESPONSE_ERROR_WRONG_CURRENT_FLASH_CONFIG;
   if (error == UPDATE_ERROR_SPACE)
     return OTA_RESPONSE_ERROR_RP2040_NOT_ENOUGH_SPACE;
+
+  ESP_LOGE(TAG, "Begin error: %d", error);
+
   return OTA_RESPONSE_ERROR_UNKNOWN;
 }
 
@@ -36,16 +42,25 @@ void ArduinoRP2040OTABackend::set_update_md5(const char *md5) { Update.setMD5(md
 
 OTAResponseTypes ArduinoRP2040OTABackend::write(uint8_t *data, size_t len) {
   size_t written = Update.write(data, len);
-  if (written != len) {
-    return OTA_RESPONSE_ERROR_WRITING_FLASH;
+  if (written == len) {
+    return OTA_RESPONSE_OK;
   }
-  return OTA_RESPONSE_OK;
+
+  uint8_t error = Update.getError();
+  ESP_LOGE(TAG, "Write error: %d", error);
+
+  return OTA_RESPONSE_ERROR_WRITING_FLASH;
 }
 
 OTAResponseTypes ArduinoRP2040OTABackend::end() {
-  if (!Update.end())
-    return OTA_RESPONSE_ERROR_UPDATE_END;
-  return OTA_RESPONSE_OK;
+  if (Update.end()) {
+    return OTA_RESPONSE_OK;
+  }
+
+  uint8_t error = Update.getError();
+  ESP_LOGE(TAG, "End error: %d", error);
+
+  return OTA_RESPONSE_ERROR_UPDATE_END;
 }
 
 void ArduinoRP2040OTABackend::abort() {
diff --git a/esphome/const.py b/esphome/const.py
index dacd839eab..b59a2e9517 100644
--- a/esphome/const.py
+++ b/esphome/const.py
@@ -1,6 +1,6 @@
 """Constants used by esphome."""
 
-__version__ = "2024.7.0b3"
+__version__ = "2024.7.0b4"
 
 ALLOWED_NAME_CHARS = "abcdefghijklmnopqrstuvwxyz0123456789-_"
 VALID_SUBSTITUTIONS_CHARACTERS = (