diff --git a/README.md b/README.md
index e6a7fce..f01346f 100755
--- a/README.md
+++ b/README.md
@@ -534,16 +534,19 @@ void loop() {
 
 ⚠️ **Note**: Software timer mode provides less accurate timing than hardware interrupts.
 
-## Migration Guide (v1.x → v2.0)
+## Migration Guide (v1.x → v2.3)
 
 ### Breaking Changes
 
-| Old API (v1.x) | New API (v2.0+) |
+| Old API (v1.x) | New API (v2.3+) |
 |----------------|-----------------|
 | `setClock96PPQNOutput()` | `setOnOutputPPQN()` |
 | `setClock16PPQNOutput()` | `setOnStep()` |
 | `setOnClockStartOutput()` | `setOnClockStart()` |
 | `setOnClockStopOutput()` | `setOnClockStop()` |
+| `setOnSync24()` | `setOnSync(uClock.PPQN_24, onSync24)` |
+| `setOnSync48()` | `setOnSync(uClock.PPQN_48, onSync48)` |
+| `setOnSyncXX()` | `setOnSync(uClock.PPQN_XX, onSyncXX)` |
 
 ### Resolution Changes
 
diff --git a/src/platforms/esp32-nofrertos.h b/src/platforms/esp32-nofrertos.h
index 70d2720..23efa77 100644
--- a/src/platforms/esp32-nofrertos.h
+++ b/src/platforms/esp32-nofrertos.h
@@ -17,7 +17,7 @@ void ARDUINO_ISR_ATTR handlerISR(void)
 
 void initTimer(uint32_t init_clock)
 {
-    _uclockTimer = timerBegin(init_clock);
+    _uclockTimer = timerBegin(1000000);
 
     // attach to generic uclock ISR
     timerAttachInterrupt(_uclockTimer, &handlerISR);
@@ -29,4 +29,4 @@ void initTimer(uint32_t init_clock)
 void setTimer(uint32_t us_interval)
 {
     timerAlarmWrite(_uclockTimer, us_interval, true); 
-}
\ No newline at end of file
+}
diff --git a/src/platforms/esp32.h b/src/platforms/esp32.h
index f0ef639..fb5b3b9 100644
--- a/src/platforms/esp32.h
+++ b/src/platforms/esp32.h
@@ -43,7 +43,7 @@ void initTimer(uint32_t init_clock)
     // create the clockTask
     xTaskCreate(clockTask, "clockTask", CLOCK_STACK_SIZE, NULL, 1, &taskHandle);
 
-    _uclockTimer = timerBegin(init_clock);
+    _uclockTimer = timerBegin(1000000);
 
     // attach to generic uclock ISR
     timerAttachInterrupt(_uclockTimer, &handlerISR);
@@ -55,4 +55,4 @@ void initTimer(uint32_t init_clock)
 void setTimer(uint32_t us_interval)
 {
     timerAlarm(_uclockTimer, us_interval, true, 0); 
-}
\ No newline at end of file
+}