diff --git a/arduino/beken-72xx/cores/arduino/LibreTuyaAPI.cpp b/arduino/beken-72xx/cores/arduino/LibreTuyaAPI.cpp
index 0ef7477..d3927a0 100644
--- a/arduino/beken-72xx/cores/arduino/LibreTuyaAPI.cpp
+++ b/arduino/beken-72xx/cores/arduino/LibreTuyaAPI.cpp
@@ -13,11 +13,16 @@
 #define FLASH_OP_RDID		 20
 
 extern "C" {
+
 #include <flash_pub.h>
+#include <param_config.h>
 #include <sys_ctrl.h>
 #include <sys_rtos.h>
 #include <wlan_ui_pub.h>
-}
+
+extern uint8_t system_mac[];
+
+} // extern "C"
 
 void LibreTuya::restart() {
 	bk_reboot();
@@ -35,10 +40,9 @@ const char *LibreTuya::getChipModel() {
 }
 
 uint32_t LibreTuya::getChipId() {
-	// TODO determine if this really is unique
-	uint32_t chipId = REG_READ(SCTRL_DEVICE_ID);
-	chipId &= 0xFFFFFF;
-	return chipId;
+	uint8_t mac[6];
+	cfg_load_mac(mac); // force loading MAC from TLV (ignore user-set WiFi MAC)
+	return (mac[3]) | (mac[4] << 8) | (mac[5] << 16);
 }
 
 uint8_t LibreTuya::getChipCores() {
diff --git a/arduino/libretuya/core/ChipType.h b/arduino/libretuya/core/ChipType.h
index e9fde00..205bd01 100644
--- a/arduino/libretuya/core/ChipType.h
+++ b/arduino/libretuya/core/ChipType.h
@@ -26,4 +26,7 @@ enum ChipType {
 	RTL8710L0 = CHIP_TYPE(F_RTL8710B, 0xFB), // CHIPID_8710BN_L0 / QFN32
 	RTL8711BN = CHIP_TYPE(F_RTL8710B, 0xFD), // CHIPID_8711BN / QFN48
 	RTL8711BU = CHIP_TYPE(F_RTL8710B, 0xFC), // CHIPID_8711BG / QFN68
+	// Beken 72XX
+	BK7231T = CHIP_TYPE(F_BK7231T, 0x1A), // *SCTRL_CHIP_ID = 0x7231a
+	BK7231N = CHIP_TYPE(F_BK7231N, 0x1C), // *SCTRL_CHIP_ID = 0x7231c
 };
diff --git a/tools/soc/uf2_bk72xx.py b/tools/soc/uf2_bk72xx.py
index 925ef16..cfef700 100644
--- a/tools/soc/uf2_bk72xx.py
+++ b/tools/soc/uf2_bk72xx.py
@@ -47,6 +47,8 @@ def upload_uart(
         except ValueError as e:
             print(prefix, f"Writing failed: {e.args[0]}")
             return False
+    # reboot the chip
+    bk.reboot_chip()
     return True