diff --git a/lib/MycilaAppInfo/MycilaAppInfo.cpp b/lib/MycilaAppInfo/MycilaAppInfo.cpp
index 92ff3bb..1ba9c28 100644
--- a/lib/MycilaAppInfo/MycilaAppInfo.cpp
+++ b/lib/MycilaAppInfo/MycilaAppInfo.cpp
@@ -33,7 +33,7 @@ extern const char* __COMPILED_BUILD_HASH__;
 extern const char* __COMPILED_BUILD_NAME__;
 extern const char* __COMPILED_BUILD_TIMESTAMP__;
 
-Mycila::AppInfoClass::AppInfoClass() : id(Mycila::System.getEspID()),
+Mycila::AppInfoClass::AppInfoClass() : id(Mycila::System::getChipIDStr()),
                                        name(APP_NAME),
                                        model(APP_MODEL),
                                        version(__COMPILED_APP_VERSION__),
diff --git a/platformio.ini b/platformio.ini
index fca9aa4..26df165 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -72,7 +72,7 @@ lib_deps =
   mathieucarbou/MycilaPulseAnalyzer @ 1.0.2
   mathieucarbou/MycilaPZEM004Tv3 @ 4.0.7
   mathieucarbou/MycilaRelay @ 4.0.1
-  mathieucarbou/MycilaSystem @ 2.0.8
+  mathieucarbou/MycilaSystem @ 3.0.1
   mathieucarbou/MycilaTaskManager @ 3.1.2
   mathieucarbou/MycilaTaskMonitor @ 3.0.1
   mathieucarbou/MycilaTrafficLight @ 1.0.0
diff --git a/src/Website.cpp b/src/Website.cpp
index f01902c..17d34a5 100644
--- a/src/Website.cpp
+++ b/src/Website.cpp
@@ -454,7 +454,7 @@ void YaSolR::WebsiteClass::initCards() {
   _appModel.set((Mycila::AppInfo.model.c_str()));
   _appName.set((Mycila::AppInfo.name.c_str()));
   _appVersion.set(Mycila::AppInfo.version.c_str());
-  _deviceBootCount.set(String(Mycila::System.getBootCount()).c_str());
+  _deviceBootCount.set(String(Mycila::System::getBootCount()).c_str());
   _deviceCores.set(String(ESP.getChipCores()).c_str());
   _deviceModel.set(ESP.getChipModel());
   _deviceRev.set(String(ESP.getChipRevision()).c_str());
@@ -778,7 +778,8 @@ void YaSolR::WebsiteClass::updateCards() {
   }
 
   // stats
-  Mycila::SystemMemory memory = Mycila::System.getMemory();
+  Mycila::System::Memory memory;
+  Mycila::System::getMemory(memory);
   Mycila::ESPConnect::Mode mode = espConnect.getMode();
   _output1RelaySwitchCount.set(String(bypassRelayO1.getSwitchCount()).c_str());
   _output2RelaySwitchCount.set(String(bypassRelayO2.getSwitchCount()).c_str());
@@ -800,7 +801,7 @@ void YaSolR::WebsiteClass::updateCards() {
   _zcdPulsePeriod.set((String(pulseAnalyzer.getPeriod()) + " us").c_str());
   _zcdPulseLength.set((String(pulseAnalyzer.getLength()) + " us").c_str());
   _time.set(Mycila::Time::getLocalStr().c_str());
-  _uptime.set(Mycila::Time::toDHHMMSS(Mycila::System.getUptime()).c_str());
+  _uptime.set(Mycila::Time::toDHHMMSS(Mycila::System::getUptime()).c_str());
 #ifdef APP_MODEL_TRIAL
   _trialRemainingTime.set(Mycila::Time::toDHHMMSS(Mycila::Trial.getRemaining()).c_str());
 #endif
diff --git a/src/init/Boot.cpp b/src/init/Boot.cpp
index 287707b..41d3ac7 100644
--- a/src/init/Boot.cpp
+++ b/src/init/Boot.cpp
@@ -19,7 +19,7 @@ Mycila::Task bootTask("Boot", [](void* params) {
   logger.warn(TAG, "Booting %s", Mycila::AppInfo.nameModelVersion.c_str());
 
   // system
-  Mycila::System.begin(true, "fs");
+  Mycila::System::init(true, "fs");
 
   // trial
 #ifdef APP_MODEL_TRIAL
diff --git a/src/init/REST.cpp b/src/init/REST.cpp
index 6196aac..3dad9bc 100644
--- a/src/init/REST.cpp
+++ b/src/init/REST.cpp
@@ -10,14 +10,15 @@
 #include <map>
 
 static void systemInfoToJson(JsonObject& root) {
-  Mycila::SystemMemory memory = Mycila::System.getMemory();
+  Mycila::System::Memory memory;
+  Mycila::System::getMemory(memory);
 
   root["app"]["manufacturer"] = Mycila::AppInfo.manufacturer;
   root["app"]["model"] = Mycila::AppInfo.model;
   root["app"]["name"] = Mycila::AppInfo.name;
   root["app"]["version"] = Mycila::AppInfo.version;
 
-  root["device"]["boots"] = Mycila::System.getBootCount();
+  root["device"]["boots"] = Mycila::System::getBootCount();
   root["device"]["cores"] = ESP.getChipCores();
   root["device"]["cpu_freq"] = ESP.getCpuFreqMHz();
   root["device"]["heap"]["total"] = memory.total;
@@ -26,7 +27,7 @@ static void systemInfoToJson(JsonObject& root) {
   root["device"]["id"] = Mycila::AppInfo.id;
   root["device"]["model"] = ESP.getChipModel();
   root["device"]["revision"] = ESP.getChipRevision();
-  root["device"]["uptime"] = Mycila::System.getUptime();
+  root["device"]["uptime"] = Mycila::System::getUptime();
 
   root["firmware"]["build"]["branch"] = Mycila::AppInfo.buildBranch;
   root["firmware"]["build"]["hash"] = Mycila::AppInfo.buildHash;
diff --git a/src/tasks/Display.cpp b/src/tasks/Display.cpp
index 689cfc7..314f70a 100644
--- a/src/tasks/Display.cpp
+++ b/src/tasks/Display.cpp
@@ -151,8 +151,8 @@ Mycila::Task displayTask("Display", [](void* params) {
 
     default: {
       struct tm timeInfo;
-      display.home.printf("Restarts: %11" PRIu32 "\n", Mycila::System.getBootCount());
-      display.home.printf("Uptime: %13.13s\n", Mycila::Time::toDHHMMSS(Mycila::System.getUptime()).c_str());
+      display.home.printf("Restarts: %11" PRIu32 "\n", Mycila::System::getBootCount());
+      display.home.printf("Uptime: %13.13s\n", Mycila::Time::toDHHMMSS(Mycila::System::getUptime()).c_str());
       if (Mycila::NTP.isSynced() && getLocalTime(&timeInfo, 5))
         display.home.printf("NTP Time:       %02u:%02u\n", timeInfo.tm_hour, timeInfo.tm_min);
       else
diff --git a/src/tasks/MQTT.cpp b/src/tasks/MQTT.cpp
index 70001c5..bdae745 100644
--- a/src/tasks/MQTT.cpp
+++ b/src/tasks/MQTT.cpp
@@ -55,7 +55,7 @@ Mycila::Task mqttPublishStaticTask("MQTT Static", Mycila::TaskType::ONCE, [](voi
   mqtt.publish(baseTopic + "/system/app/version", Mycila::AppInfo.version, true);
   yield();
 
-  mqtt.publish(baseTopic + "/system/device/boots", String(Mycila::System.getBootCount()), true);
+  mqtt.publish(baseTopic + "/system/device/boots", String(Mycila::System::getBootCount()), true);
   mqtt.publish(baseTopic + "/system/device/cores", String(ESP.getChipCores()), true);
   mqtt.publish(baseTopic + "/system/device/cpu_freq", String(ESP.getCpuFreqMHz()), true);
   mqtt.publish(baseTopic + "/system/device/heap/total", String(ESP.getHeapSize()), true);
@@ -91,10 +91,12 @@ Mycila::Task mqttPublishConfigTask("MQTT Config", Mycila::TaskType::ONCE, [](voi
 Mycila::Task mqttPublishTask("MQTT", [](void* params) {
   const String baseTopic = config.get(KEY_MQTT_TOPIC);
 
-  Mycila::SystemMemory memory = Mycila::System.getMemory();
+  Mycila::System::Memory memory;
+  Mycila::System::getMemory(memory);
+
   mqtt.publish(baseTopic + "/system/device/heap/usage", String(memory.usage));
   mqtt.publish(baseTopic + "/system/device/heap/used", String(memory.used));
-  mqtt.publish(baseTopic + "/system/device/uptime", String(Mycila::System.getUptime()));
+  mqtt.publish(baseTopic + "/system/device/uptime", String(Mycila::System::getUptime()));
   yield();
 
   mqtt.publish(baseTopic + "/system/network/eth/ip_address", espConnect.getIPAddress(Mycila::ESPConnect::Mode::ETH).toString());
diff --git a/src/tasks/Reset.cpp b/src/tasks/Reset.cpp
index 89a30ce..97b483c 100644
--- a/src/tasks/Reset.cpp
+++ b/src/tasks/Reset.cpp
@@ -7,5 +7,5 @@
 Mycila::Task resetTask("Reset", Mycila::TaskType::ONCE, [](void* params) {
   logger.warn("YaSolR", "Resetting %s", Mycila::AppInfo.nameModelVersion.c_str());
   config.clear();
-  Mycila::System.restart(500);
+  Mycila::System::restart(500);
 });
diff --git a/src/tasks/Restart.cpp b/src/tasks/Restart.cpp
index b966e1f..c1536f6 100644
--- a/src/tasks/Restart.cpp
+++ b/src/tasks/Restart.cpp
@@ -6,5 +6,5 @@
 
 Mycila::Task restartTask("Restart", Mycila::TaskType::ONCE, [](void* params) {
   logger.warn("YaSolR", "Restarting %s", Mycila::AppInfo.nameModelVersion.c_str());
-  Mycila::System.restart(500);
+  Mycila::System::restart(500);
 });
diff --git a/src/tasks/SafeBoot.cpp b/src/tasks/SafeBoot.cpp
index dfe4f32..3365b1d 100644
--- a/src/tasks/SafeBoot.cpp
+++ b/src/tasks/SafeBoot.cpp
@@ -20,5 +20,5 @@ Mycila::Task safeBootTask("SafeBoot", Mycila::TaskType::ONCE, [](void* params) {
 #ifdef APP_MODEL_TRIAL
   Mycila::Trial.end();
 #endif
-  Mycila::System.restartFactory("safeboot");
+  Mycila::System::restartFactory("safeboot");
 });