diff --git a/README.md b/README.md
index 80f2d960..9f8acbd7 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 ESPurna ("spark" in Catalan) is a custom firmware for ESP8285/ESP8266 based smart switches, lights and sensors.
 It uses the Arduino Core for ESP8266 framework and a number of 3rd party libraries.
 
-[![version](https://img.shields.io/badge/version-1.12.5a-brightgreen.svg)](CHANGELOG.md)
+[![version](https://img.shields.io/badge/version-1.12.5b-brightgreen.svg)](CHANGELOG.md)
 ![branch](https://img.shields.io/badge/branch-dev-orange.svg)
 [![travis](https://travis-ci.org/xoseperez/espurna.svg?branch=dev)](https://travis-ci.org/xoseperez/espurna)
 [![codacy](https://img.shields.io/codacy/grade/c9496e25cf07434cba786b462cb15f49/dev.svg)](https://www.codacy.com/app/xoseperez/espurna/dashboard)
diff --git a/code/espurna/config/prototypes.h b/code/espurna/config/prototypes.h
index 27c6c773..e044642f 100644
--- a/code/espurna/config/prototypes.h
+++ b/code/espurna/config/prototypes.h
@@ -74,13 +74,12 @@ bool i2cGetLock(unsigned char address);
 bool i2cReleaseLock(unsigned char address);
 unsigned char i2cFindAndLock(size_t size, unsigned char * addresses);
 
-void i2c_write_buffer(uint8_t address, uint8_t * buffer, size_t len);
-uint8_t i2c_write_buffer_ret(uint8_t address, uint8_t * buffer, size_t len);
-void i2c_write_uint8(uint8_t address, uint8_t value);
-void i2c_write_uint8(uint8_t address, uint8_t reg, uint8_t value);
-uint8_t i2c_write_uint8(uint8_t address, uint8_t reg, uint8_t value, uint8_t value2);
-void i2c_write_uint16(uint8_t address, uint16_t value);
-void i2c_write_uint16(uint8_t address, uint8_t reg, uint16_t value);
+uint8_t i2c_write_buffer(uint8_t address, uint8_t * buffer, size_t len);
+uint8_t i2c_write_uint8(uint8_t address, uint8_t value);
+uint8_t i2c_write_uint8(uint8_t address, uint8_t reg, uint8_t value);
+uint8_t i2c_write_uint8(uint8_t address, uint8_t reg, uint8_t value1, uint8_t value2);
+uint8_t i2c_write_uint16(uint8_t address, uint16_t value);
+uint8_t i2c_write_uint16(uint8_t address, uint8_t reg, uint16_t value);
 uint8_t i2c_read_uint8(uint8_t address);
 uint8_t i2c_read_uint8(uint8_t address, uint8_t reg);
 uint16_t i2c_read_uint16(uint8_t address);
diff --git a/code/espurna/config/version.h b/code/espurna/config/version.h
index bd6bf6ab..43682c59 100644
--- a/code/espurna/config/version.h
+++ b/code/espurna/config/version.h
@@ -1,5 +1,5 @@
 #define APP_NAME                "ESPURNA"
-#define APP_VERSION             "1.12.5a"
+#define APP_VERSION             "1.12.5b"
 #define APP_AUTHOR              "xose.perez@gmail.com"
 #define APP_WEBSITE             "http://tinkerman.cat"
 #define CFG_VERSION             3
diff --git a/code/espurna/i2c.ino b/code/espurna/i2c.ino
index b828754b..8300929a 100644
--- a/code/espurna/i2c.ino
+++ b/code/espurna/i2c.ino
@@ -110,29 +110,22 @@ int _i2cClearbus(int sda, int scl) {
 
 #if I2C_USE_BRZO
 
-// simple i2c device wakeup
 void i2c_wakeup(uint8_t address) {
     brzo_i2c_start_transaction(_address, _i2c_scl_frequency);
     brzo_i2c_end_transaction();
 }
 
-uint8_t i2c_write_buffer_ret(uint8_t address, uint8_t * buffer, size_t len) {
+uint8_t i2c_write_uint8(uint8_t address, uint8_t value) {
+    uint8_t buffer[1] = {value};
     brzo_i2c_start_transaction(_address, _i2c_scl_frequency);
-    brzo_i2c_write_uint8(buffer, len, false);
+    brzo_i2c_write_uint8(buffer, 1, false);
     return brzo_i2c_end_transaction();
 }
 
-void i2c_write_buffer(uint8_t address, uint8_t * buffer, size_t len) {
+uint8_t i2c_write_buffer(uint8_t address, uint8_t * buffer, size_t len) {
     brzo_i2c_start_transaction(_address, _i2c_scl_frequency);
     brzo_i2c_write_uint8(buffer, len, false);
-    brzo_i2c_end_transaction();
-}
-
-void i2c_write_uint8(uint8_t address, uint8_t value) {
-    uint8_t buffer[1] = {value};
-    brzo_i2c_start_transaction(_address, _i2c_scl_frequency);
-    brzo_i2c_write_uint8(buffer, 1, false);
-    brzo_i2c_end_transaction();
+    return brzo_i2c_end_transaction();
 }
 
 uint8_t i2c_read_uint8(uint8_t address) {
@@ -177,28 +170,21 @@ void i2c_read_buffer(uint8_t address, uint8_t * buffer, size_t len) {
 
 #else // not I2C_USE_BRZO
 
-// simple i2c device wakeup
 void i2c_wakeup(uint8_t address) {
     Wire.beginTransmission((uint8_t) address);
     Wire.endTransmission();
 }
 
-uint8_t i2c_write_buffer_ret(uint8_t address, uint8_t * buffer, size_t len) {
+uint8_t i2c_write_uint8(uint8_t address, uint8_t value) {
     Wire.beginTransmission((uint8_t) address);
-    Wire.write(buffer, len);
+    Wire.write((uint8_t) value);
     return Wire.endTransmission();
 }
 
-void i2c_write_buffer(uint8_t address, uint8_t * buffer, size_t len) {
+uint8_t i2c_write_buffer(uint8_t address, uint8_t * buffer, size_t len) {
     Wire.beginTransmission((uint8_t) address);
     Wire.write(buffer, len);
-    Wire.endTransmission();
-}
-
-void i2c_write_uint8(uint8_t address, uint8_t value) {
-    Wire.beginTransmission((uint8_t) address);
-    Wire.write((uint8_t) value);
-    Wire.endTransmission();
+    return Wire.endTransmission();
 }
 
 uint8_t i2c_read_uint8(uint8_t address) {
@@ -250,32 +236,29 @@ void i2c_read_buffer(uint8_t address, uint8_t * buffer, size_t len) {
 
 #endif // I2C_USE_BRZO
 
-void i2c_write_uint8(uint8_t address, uint8_t reg, uint8_t value) {
+uint8_t i2c_write_uint8(uint8_t address, uint8_t reg, uint8_t value) {
     uint8_t buffer[2] = {reg, value};
-    i2c_write_buffer(address, buffer, 2);
+    return i2c_write_buffer(address, buffer, 2);
 }
 
-uint8_t i2c_write_uint8(uint8_t address, uint8_t reg, uint8_t value, uint8_t value2) {
-    uint8_t buffer[3];
-    buffer[0] = reg;
-    buffer[1] = value;
-    buffer[2] = value2;
-    return i2c_write_buffer_ret(address, buffer, 3);
+uint8_t i2c_write_uint8(uint8_t address, uint8_t reg, uint8_t value1, uint8_t value2) {
+    uint8_t buffer[3] = {reg, value1, value2};
+    return i2c_write_buffer(address, buffer, 3);
 }
 
-void i2c_write_uint16(uint8_t address, uint8_t reg, uint16_t value) {
+uint8_t i2c_write_uint16(uint8_t address, uint8_t reg, uint16_t value) {
     uint8_t buffer[3];
     buffer[0] = reg;
     buffer[1] = (value >> 8) & 0xFF;
     buffer[2] = (value >> 0) & 0xFF;
-    i2c_write_buffer(address, buffer, 3);
+    return i2c_write_buffer(address, buffer, 3);
 }
 
-void i2c_write_uint16(uint8_t address, uint16_t value) {
+uint8_t i2c_write_uint16(uint8_t address, uint16_t value) {
     uint8_t buffer[2];
     buffer[0] = (value >> 8) & 0xFF;
     buffer[1] = (value >> 0) & 0xFF;
-    i2c_write_buffer(address, buffer, 2);
+    return i2c_write_buffer(address, buffer, 2);
 }
 
 uint16_t i2c_read_uint16_le(uint8_t address, uint8_t reg) {
diff --git a/code/espurna/system.ino b/code/espurna/system.ino
index 866f03f3..46b5fa71 100644
--- a/code/espurna/system.ino
+++ b/code/espurna/system.ino
@@ -70,6 +70,11 @@ unsigned long systemLoopDelay() {
     return _loop_delay;
 }
 
+
+unsigned long systemLoadAverage() {
+    return _load_average;
+}
+
 void systemLoop() {
 
     // -------------------------------------------------------------------------
@@ -160,7 +165,3 @@ void systemSetup() {
     espurnaRegisterLoop(systemLoop);
 
 }
-
-unsigned long getLoadAverage() {
-    return _load_average;
-}
diff --git a/code/espurna/utils.ino b/code/espurna/utils.ino
index 11524bc4..74ece067 100644
--- a/code/espurna/utils.ino
+++ b/code/espurna/utils.ino
@@ -184,7 +184,7 @@ void heartbeat() {
                 mqttSend(MQTT_TOPIC_STATUS, MQTT_STATUS_ONLINE, true);
             #endif
             #if (LOADAVG_REPORT)
-                mqttSend(MQTT_TOPIC_LOADAVG, String(getLoadAverage()).c_str());
+                mqttSend(MQTT_TOPIC_LOADAVG, String(systemLoadAverage()).c_str());
             #endif
         }
     #endif
@@ -349,6 +349,9 @@ void info() {
         DEBUG_MSG_P(PSTR("\n"));
         DEBUG_MSG_P(PSTR("[INIT] SENSORS:"));
 
+        #if AM2320_SUPPORT
+            DEBUG_MSG_P(PSTR(" AM2320_I2C"));
+        #endif
         #if ANALOG_SUPPORT
             DEBUG_MSG_P(PSTR(" ANALOG"));
         #endif
@@ -379,6 +382,9 @@ void info() {
         #if EVENTS_SUPPORT
             DEBUG_MSG_P(PSTR(" EVENTS"));
         #endif
+        #if GUVAS12SD_SUPPORT
+            DEBUG_MSG_P(PSTR(" GUVAS12SD"));
+        #endif
         #if HLW8012_SUPPORT
             DEBUG_MSG_P(PSTR(" HLW8012"));
         #endif
@@ -400,12 +406,6 @@ void info() {
         #if V9261F_SUPPORT
             DEBUG_MSG_P(PSTR(" V9261F"));
         #endif
-        #if AM2320_SUPPORT
-            DEBUG_MSG_P(PSTR(" AM2320_I2C"));
-        #endif
-        #if GUVAS12SD_SUPPORT
-            DEBUG_MSG_P(PSTR(" GUVAS12SD"));
-        #endif
 
     #endif // SENSOR_SUPPORT
 
diff --git a/code/espurna/ws.ino b/code/espurna/ws.ino
index 35d99db7..67dc5399 100644
--- a/code/espurna/ws.ino
+++ b/code/espurna/ws.ino
@@ -220,7 +220,7 @@ void _wsUpdate(JsonObject& root) {
     root["heap"] = getFreeHeap();
     root["uptime"] = getUptime();
     root["rssi"] = WiFi.RSSI();
-    root["loadaverage"] = getLoadAverage();
+    root["loadaverage"] = systemLoadAverage();
     root["vcc"] = ESP.getVcc();
     #if NTP_SUPPORT
         if (ntpSynced()) root["now"] = now();
@@ -272,7 +272,6 @@ void _wsOnStart(JsonObject& root) {
 
         root["btnDelay"] = getSetting("btnDelay", BUTTON_DBLCLICK_DELAY).toInt();
         root["webPort"] = getSetting("webPort", WEB_PORT).toInt();
-
         root["wsAuth"] = getSetting("wsAuth", WS_AUTHENTICATION).toInt() == 1;
 
     }