diff --git a/CHANGELOG.md b/CHANGELOG.md
index 371ee15a9..6733ad555 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,14 +3,24 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased] - Development
 
-## [13.1.0.1]
+## [13.1.0.2]
+### Added
+
+### Breaking Changed
+
+### Changed
+
+### Fixed
+- PCF8574 mode 1 with base relays exception 3/28 regression from v12.4.0.4 (#19408)
+
+### Removed
+
+## [13.1.0.1] 20230831
 ### Added
 - Commands to allow setting of timeprop parameters (#19310)
 - Variables ``%power<1..28>%`` and  ``%switch<1..28>%`` to rules (#19331)
 - Experimental support for ESP32-C2 and ESP32-C6 using Arduino core v3.0 
 
-### Breaking Changed
-
 ### Changed
 - Display invert setting after tasmota start in uDisplay driver (#19337)
 
@@ -19,9 +29,6 @@ All notable changes to this project will be documented in this file.
 - Teleinfo power (#19381)
 - Exception 3 in IRHVAC (#19389)
 
-### Removed
-
-
 ## [Released] - Development
 
 ## [13.1.0] 20230815
diff --git a/RELEASENOTES.md b/RELEASENOTES.md
index c1305fccc..8b43f5373 100644
--- a/RELEASENOTES.md
+++ b/RELEASENOTES.md
@@ -110,7 +110,7 @@ The latter links can be used for OTA upgrades too like ``OtaUrl https://ota.tasm
 
 [Complete list](BUILDS.md) of available feature and sensors.
 
-## Changelog v13.1.0.1
+## Changelog v13.1.0.2
 ### Added
 - Experimental support for ESP32-C2 and ESP32-C6 using Arduino core v3.0 
 - Commands to allow setting of timeprop parameters [#19310](https://github.com/arendst/Tasmota/issues/19310)
@@ -125,5 +125,6 @@ The latter links can be used for OTA upgrades too like ``OtaUrl https://ota.tasm
 - Shutter invert [#19341](https://github.com/arendst/Tasmota/issues/19341) and [#19374](https://github.com/arendst/Tasmota/issues/19374)
 - Teleinfo power [#19381](https://github.com/arendst/Tasmota/issues/19381)
 - Exception 3 in IRHVAC [#19389](https://github.com/arendst/Tasmota/issues/19389)
+- PCF8574 mode 1 with base relays exception 3/28 regression from v12.4.0.4 [#19408](https://github.com/arendst/Tasmota/issues/19408)
 
 ### Removed
diff --git a/tasmota/include/tasmota_version.h b/tasmota/include/tasmota_version.h
index a5793dc77..ce381aebb 100644
--- a/tasmota/include/tasmota_version.h
+++ b/tasmota/include/tasmota_version.h
@@ -20,6 +20,6 @@
 #ifndef _TASMOTA_VERSION_H_
 #define _TASMOTA_VERSION_H_
 
-const uint32_t VERSION = 0x0D010001;   // 13.1.0.1
+const uint32_t VERSION = 0x0D010002;   // 13.1.0.2
 
 #endif  // _TASMOTA_VERSION_H_
diff --git a/tasmota/tasmota_xdrv_driver/xdrv_28_pcf8574_v2.ino b/tasmota/tasmota_xdrv_driver/xdrv_28_pcf8574_v2.ino
index a8454c713..6fb855bb4 100644
--- a/tasmota/tasmota_xdrv_driver/xdrv_28_pcf8574_v2.ino
+++ b/tasmota/tasmota_xdrv_driver/xdrv_28_pcf8574_v2.ino
@@ -425,14 +425,15 @@ bool Pcf8574AddSwitch(void) {
 \*********************************************************************************************/
 
 void Pcf8574SwitchRelay(void) {
-  for (uint32_t i = 0; i < TasmotaGlobal.devices_present; i++) {
-    uint8_t relay_state = bitRead(XdrvMailbox.index, i);
+  uint32_t devices_present = TasmotaGlobal.devices_present - Pcf8574.relay_offset;
+  for (uint32_t i = 0; i < devices_present; i++) {
+    uint8_t relay_state = bitRead(XdrvMailbox.index, Pcf8574.relay_offset + i);
 
     if (Pcf8574.max_devices > 0 && Pcf8574_pin[i] < 99) {
       uint8_t board = Pcf8574_pin[i]>>3;
       uint8_t pin = Pcf8574_pin[i]&0x7;
       uint8_t oldpinmask = Pcf8574.pin_mask[board];
-      uint8_t _val = bitRead(TasmotaGlobal.rel_inverted, i) ? !relay_state : relay_state;
+      uint8_t _val = bitRead(TasmotaGlobal.rel_inverted, Pcf8574.relay_offset + i) ? !relay_state : relay_state;
 
       //AddLog(LOG_LEVEL_DEBUG, PSTR("PCF: SwitchRelay %d=%d => PCF-%d.D%d=%d"), i, relay_state, board +1, pin, _val);
       bitWrite(Pcf8574.pin_mask[board], pin, _val);
@@ -485,9 +486,10 @@ void Pcf8574ModuleInitMode1(void) {
 
     for (uint32_t i = 0; i < 8; i++, gpio>>=1) {
       uint8_t _result = Settings->pcf8574_config[idx] >> i &1;
-      //AddLog(LOG_LEVEL_DEBUG, PSTR("PCF: I2C shift i %d: %d. Powerstate: %d, TasmotaGlobal.devices_present: %d"), i,_result, Settings->power>>i&1, TasmotaGlobal.devices_present);
+      uint32_t devices_present = TasmotaGlobal.devices_present - Pcf8574.relay_offset;
+      //AddLog(LOG_LEVEL_DEBUG, PSTR("PCF: I2C shift i %d: %d. Powerstate: %d, devices_present: %d"), i,_result, Settings->power>>i&1, devices_present);
       if (_result > 0) {
-        Pcf8574_pin[TasmotaGlobal.devices_present] = i + 8 * idx;
+        Pcf8574_pin[devices_present] = i + 8 * idx;
         bitWrite(TasmotaGlobal.rel_inverted, TasmotaGlobal.devices_present, Settings->flag3.pcf8574_ports_inverted);  // SetOption81 - Invert all ports on PCF8574 devices
         if (!Settings->flag.save_state && !Settings->flag3.no_power_feedback) {  // SetOption63 - Don't scan relay power state at restart - #5594 and #5663
           //AddLog(LOG_LEVEL_DEBUG, PSTR("PCF: Set power from from chip state"));
@@ -575,7 +577,8 @@ void Pcf8574SaveSettings(void) {
       n = n&(n-1);
       count++;
     }
-    if (count <= TasmotaGlobal.devices_present) {
+    uint32_t devices_present = TasmotaGlobal.devices_present - Pcf8574.relay_offset;
+    if (count <= devices_present) {
       UpdateDevicesPresent(-count);
     }
     for (byte i = 0; i < 8; i++) {
@@ -662,12 +665,12 @@ void Pcf8574ModuleInit(void) {
   if (Pcf8574.mode) {
     Pcf8574_pin = (uint16_t*)malloc(Pcf8574.max_connected_ports * sizeof(uint16_t));
     if (Pcf8574_pin) {
+      Pcf8574.relay_offset = TasmotaGlobal.devices_present;
 #ifdef USE_PCF8574_MODE2
       if (Pcf8574LoadTemplate()) {
         Pcf8574.mode = 2;
         Pcf8574.button_offset = -1;
         Pcf8574.switch_offset = -1;
-        Pcf8574.relay_offset = TasmotaGlobal.devices_present;
         Pcf8574.relay_max -= UpdateDevicesPresent(Pcf8574.relay_max);
       } else
 #endif  // USE_PCF8574_MODE2