diff --git a/MicroPython_BUILD/.gitignore b/MicroPython_BUILD/.gitignore
index ab24ac9..872a37c 100644
--- a/MicroPython_BUILD/.gitignore
+++ b/MicroPython_BUILD/.gitignore
@@ -22,6 +22,7 @@ build/
 
 patches/
 
+partitions_mpy.csv
 sdkconfig
 sdkconfig.old
 _sdkconfig.saved
diff --git a/MicroPython_BUILD/components/micropython/extmod/utime_mphal.c b/MicroPython_BUILD/components/micropython/extmod/utime_mphal.c
index 51dd835..9f97feb 100644
--- a/MicroPython_BUILD/components/micropython/extmod/utime_mphal.c
+++ b/MicroPython_BUILD/components/micropython/extmod/utime_mphal.c
@@ -36,24 +36,34 @@
 #include "py/runtime.h"
 #include "extmod/utime_mphal.h"
 
-//----------------------------------------------
-STATIC mp_obj_t time_sleep(mp_obj_t seconds_o) {
+//------------------------------------------------------------------
+STATIC mp_obj_t time_sleep(mp_uint_t n_args, const mp_obj_t *args) {
     #if MICROPY_PY_BUILTINS_FLOAT
-    uint32_t t = mp_hal_delay_ms((mp_uint_t)(1000 * mp_obj_get_float(seconds_o)));
+    uint32_t t = mp_hal_delay_ms((mp_uint_t)(1000 * mp_obj_get_float(args[0])));
     #else
-    uint32_t t = mp_hal_delay_ms(1000 * mp_obj_get_int(seconds_o));
+    uint32_t t = mp_hal_delay_ms(1000 * mp_obj_get_int(args[0]));
     #endif
-    return MP_OBJ_NEW_SMALL_INT(t);
+    if ((n_args > 1) && (mp_obj_is_true(args[1]))) {
+		#if MICROPY_PY_BUILTINS_FLOAT
+        return mp_obj_new_float((float)t / 1000.0);
+		#else
+    	return MP_OBJ_NEW_SMALL_INT(t);
+		#endif
+    }
+    return mp_const_none;
 }
-MP_DEFINE_CONST_FUN_OBJ_1(mp_utime_sleep_obj, time_sleep);
+MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_utime_sleep_obj, 1, 2, time_sleep);
 
-//-------------------------------------------
-STATIC mp_obj_t time_sleep_ms(mp_obj_t arg) {
-    mp_int_t ms = mp_obj_get_int(arg);
+//---------------------------------------------------------------------
+STATIC mp_obj_t time_sleep_ms(mp_uint_t n_args, const mp_obj_t *args) {
+    mp_int_t ms = mp_obj_get_int(args[0]);
    	uint32_t t = mp_hal_delay_ms(ms);
-    return MP_OBJ_NEW_SMALL_INT(t);
+    if ((n_args > 1) && (mp_obj_is_true(args[1]))) {
+    	return MP_OBJ_NEW_SMALL_INT(t);
+    }
+    return mp_const_none;
 }
-MP_DEFINE_CONST_FUN_OBJ_1(mp_utime_sleep_ms_obj, time_sleep_ms);
+MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_utime_sleep_ms_obj, 1, 2, time_sleep_ms);
 
 //-------------------------------------------
 STATIC mp_obj_t time_sleep_us(mp_obj_t arg) {
diff --git a/MicroPython_BUILD/components/micropython/extmod/utime_mphal.h b/MicroPython_BUILD/components/micropython/extmod/utime_mphal.h
index 087a52b..bc517e9 100644
--- a/MicroPython_BUILD/components/micropython/extmod/utime_mphal.h
+++ b/MicroPython_BUILD/components/micropython/extmod/utime_mphal.h
@@ -29,8 +29,8 @@
 
 #include "py/obj.h"
 
-MP_DECLARE_CONST_FUN_OBJ_1(mp_utime_sleep_obj);
-MP_DECLARE_CONST_FUN_OBJ_1(mp_utime_sleep_ms_obj);
+MP_DECLARE_CONST_FUN_OBJ_VAR_BETWEEN(mp_utime_sleep_obj);
+MP_DECLARE_CONST_FUN_OBJ_VAR_BETWEEN(mp_utime_sleep_ms_obj);
 MP_DECLARE_CONST_FUN_OBJ_1(mp_utime_sleep_us_obj);
 MP_DECLARE_CONST_FUN_OBJ_0(mp_utime_ticks_ms_obj);
 MP_DECLARE_CONST_FUN_OBJ_0(mp_utime_ticks_us_obj);
diff --git a/MicroPython_BUILD/firmware/MicroPython_LoBo_Firmwares.zip b/MicroPython_BUILD/firmware/MicroPython_LoBo_Firmwares.zip
index 49e3e64..20327c9 100644
Binary files a/MicroPython_BUILD/firmware/MicroPython_LoBo_Firmwares.zip and b/MicroPython_BUILD/firmware/MicroPython_LoBo_Firmwares.zip differ
diff --git a/MicroPython_BUILD/firmware/esp32/MicroPython.bin b/MicroPython_BUILD/firmware/esp32/MicroPython.bin
index ff3fb38..b21926c 100644
Binary files a/MicroPython_BUILD/firmware/esp32/MicroPython.bin and b/MicroPython_BUILD/firmware/esp32/MicroPython.bin differ
diff --git a/MicroPython_BUILD/firmware/esp32/bootloader/bootloader.bin b/MicroPython_BUILD/firmware/esp32/bootloader/bootloader.bin
index 1ca4a0c..3d208e0 100644
Binary files a/MicroPython_BUILD/firmware/esp32/bootloader/bootloader.bin and b/MicroPython_BUILD/firmware/esp32/bootloader/bootloader.bin differ
diff --git a/MicroPython_BUILD/firmware/esp32/flash.sh b/MicroPython_BUILD/firmware/esp32/flash.sh
index f691430..39e917a 100755
--- a/MicroPython_BUILD/firmware/esp32/flash.sh
+++ b/MicroPython_BUILD/firmware/esp32/flash.sh
@@ -1,2 +1,2 @@
 #!/bin/bash
-esptool.py --chip esp32 --port /dev/ttyUSB1 --baud 921600 --before default_reset --after no_reset write_flash -z --flash_mode dio --flash_freq 40m --flash_size detect 0x1000 bootloader/bootloader.bin 0xf000 phy_init_data.bin 0x10000 MicroPython.bin 0x8000 partitions_mpy.bin
+esptool.py --chip esp32 --port /dev/ttyUSB0 --baud 921600 --before default_reset --after no_reset write_flash -z --flash_mode dio --flash_freq 40m --flash_size detect 0x1000 bootloader/bootloader.bin 0xf000 phy_init_data.bin 0x10000 MicroPython.bin 0x8000 partitions_mpy.bin
diff --git a/MicroPython_BUILD/firmware/esp32_ota/MicroPython.bin b/MicroPython_BUILD/firmware/esp32_ota/MicroPython.bin
index cb06014..bfbe393 100644
Binary files a/MicroPython_BUILD/firmware/esp32_ota/MicroPython.bin and b/MicroPython_BUILD/firmware/esp32_ota/MicroPython.bin differ
diff --git a/MicroPython_BUILD/firmware/esp32_ota/bootloader/bootloader.bin b/MicroPython_BUILD/firmware/esp32_ota/bootloader/bootloader.bin
index bddf2b3..68f786d 100644
Binary files a/MicroPython_BUILD/firmware/esp32_ota/bootloader/bootloader.bin and b/MicroPython_BUILD/firmware/esp32_ota/bootloader/bootloader.bin differ
diff --git a/MicroPython_BUILD/firmware/esp32_ota/flash.sh b/MicroPython_BUILD/firmware/esp32_ota/flash.sh
index f691430..39e917a 100755
--- a/MicroPython_BUILD/firmware/esp32_ota/flash.sh
+++ b/MicroPython_BUILD/firmware/esp32_ota/flash.sh
@@ -1,2 +1,2 @@
 #!/bin/bash
-esptool.py --chip esp32 --port /dev/ttyUSB1 --baud 921600 --before default_reset --after no_reset write_flash -z --flash_mode dio --flash_freq 40m --flash_size detect 0x1000 bootloader/bootloader.bin 0xf000 phy_init_data.bin 0x10000 MicroPython.bin 0x8000 partitions_mpy.bin
+esptool.py --chip esp32 --port /dev/ttyUSB0 --baud 921600 --before default_reset --after no_reset write_flash -z --flash_mode dio --flash_freq 40m --flash_size detect 0x1000 bootloader/bootloader.bin 0xf000 phy_init_data.bin 0x10000 MicroPython.bin 0x8000 partitions_mpy.bin
diff --git a/MicroPython_BUILD/firmware/esp32_psram/MicroPython.bin b/MicroPython_BUILD/firmware/esp32_psram/MicroPython.bin
index ab26745..024a8cf 100644
Binary files a/MicroPython_BUILD/firmware/esp32_psram/MicroPython.bin and b/MicroPython_BUILD/firmware/esp32_psram/MicroPython.bin differ
diff --git a/MicroPython_BUILD/firmware/esp32_psram/bootloader/bootloader.bin b/MicroPython_BUILD/firmware/esp32_psram/bootloader/bootloader.bin
index 6b9112b..f44475e 100644
Binary files a/MicroPython_BUILD/firmware/esp32_psram/bootloader/bootloader.bin and b/MicroPython_BUILD/firmware/esp32_psram/bootloader/bootloader.bin differ
diff --git a/MicroPython_BUILD/firmware/esp32_psram/flash.sh b/MicroPython_BUILD/firmware/esp32_psram/flash.sh
index f691430..39e917a 100755
--- a/MicroPython_BUILD/firmware/esp32_psram/flash.sh
+++ b/MicroPython_BUILD/firmware/esp32_psram/flash.sh
@@ -1,2 +1,2 @@
 #!/bin/bash
-esptool.py --chip esp32 --port /dev/ttyUSB1 --baud 921600 --before default_reset --after no_reset write_flash -z --flash_mode dio --flash_freq 40m --flash_size detect 0x1000 bootloader/bootloader.bin 0xf000 phy_init_data.bin 0x10000 MicroPython.bin 0x8000 partitions_mpy.bin
+esptool.py --chip esp32 --port /dev/ttyUSB0 --baud 921600 --before default_reset --after no_reset write_flash -z --flash_mode dio --flash_freq 40m --flash_size detect 0x1000 bootloader/bootloader.bin 0xf000 phy_init_data.bin 0x10000 MicroPython.bin 0x8000 partitions_mpy.bin
diff --git a/MicroPython_BUILD/firmware/esp32_psram_all/MicroPython.bin b/MicroPython_BUILD/firmware/esp32_psram_all/MicroPython.bin
index 5c29ab0..4f370ff 100644
Binary files a/MicroPython_BUILD/firmware/esp32_psram_all/MicroPython.bin and b/MicroPython_BUILD/firmware/esp32_psram_all/MicroPython.bin differ
diff --git a/MicroPython_BUILD/firmware/esp32_psram_all/bootloader/bootloader.bin b/MicroPython_BUILD/firmware/esp32_psram_all/bootloader/bootloader.bin
index 02497ba..22f09ce 100644
Binary files a/MicroPython_BUILD/firmware/esp32_psram_all/bootloader/bootloader.bin and b/MicroPython_BUILD/firmware/esp32_psram_all/bootloader/bootloader.bin differ
diff --git a/MicroPython_BUILD/firmware/esp32_psram_all/flash.sh b/MicroPython_BUILD/firmware/esp32_psram_all/flash.sh
index f691430..39e917a 100755
--- a/MicroPython_BUILD/firmware/esp32_psram_all/flash.sh
+++ b/MicroPython_BUILD/firmware/esp32_psram_all/flash.sh
@@ -1,2 +1,2 @@
 #!/bin/bash
-esptool.py --chip esp32 --port /dev/ttyUSB1 --baud 921600 --before default_reset --after no_reset write_flash -z --flash_mode dio --flash_freq 40m --flash_size detect 0x1000 bootloader/bootloader.bin 0xf000 phy_init_data.bin 0x10000 MicroPython.bin 0x8000 partitions_mpy.bin
+esptool.py --chip esp32 --port /dev/ttyUSB0 --baud 921600 --before default_reset --after no_reset write_flash -z --flash_mode dio --flash_freq 40m --flash_size detect 0x1000 bootloader/bootloader.bin 0xf000 phy_init_data.bin 0x10000 MicroPython.bin 0x8000 partitions_mpy.bin
diff --git a/MicroPython_BUILD/firmware/esp32_psram_ota/MicroPython.bin b/MicroPython_BUILD/firmware/esp32_psram_ota/MicroPython.bin
index a17fbb3..fc77ac0 100644
Binary files a/MicroPython_BUILD/firmware/esp32_psram_ota/MicroPython.bin and b/MicroPython_BUILD/firmware/esp32_psram_ota/MicroPython.bin differ
diff --git a/MicroPython_BUILD/firmware/esp32_psram_ota/bootloader/bootloader.bin b/MicroPython_BUILD/firmware/esp32_psram_ota/bootloader/bootloader.bin
index 67f69a8..23e71ae 100644
Binary files a/MicroPython_BUILD/firmware/esp32_psram_ota/bootloader/bootloader.bin and b/MicroPython_BUILD/firmware/esp32_psram_ota/bootloader/bootloader.bin differ
diff --git a/MicroPython_BUILD/firmware/esp32_psram_ota/flash.sh b/MicroPython_BUILD/firmware/esp32_psram_ota/flash.sh
index f691430..39e917a 100755
--- a/MicroPython_BUILD/firmware/esp32_psram_ota/flash.sh
+++ b/MicroPython_BUILD/firmware/esp32_psram_ota/flash.sh
@@ -1,2 +1,2 @@
 #!/bin/bash
-esptool.py --chip esp32 --port /dev/ttyUSB1 --baud 921600 --before default_reset --after no_reset write_flash -z --flash_mode dio --flash_freq 40m --flash_size detect 0x1000 bootloader/bootloader.bin 0xf000 phy_init_data.bin 0x10000 MicroPython.bin 0x8000 partitions_mpy.bin
+esptool.py --chip esp32 --port /dev/ttyUSB0 --baud 921600 --before default_reset --after no_reset write_flash -z --flash_mode dio --flash_freq 40m --flash_size detect 0x1000 bootloader/bootloader.bin 0xf000 phy_init_data.bin 0x10000 MicroPython.bin 0x8000 partitions_mpy.bin
diff --git a/MicroPython_BUILD/partitions_mpy.csv b/MicroPython_BUILD/partitions_mpy.csv
deleted file mode 100644
index 44b67dd..0000000
--- a/MicroPython_BUILD/partitions_mpy.csv
+++ /dev/null
@@ -1,9 +0,0 @@
-# -------------------------------------------------------
-# -    Partition layout generaded by BUILD.sh script    -
-# -------------------------------------------------------
-# Name,         Type, SubType, Offset,  Size,       Flags
-# -------------------------------------------------------
-nvs,            data, nvs,     0x9000,  24K,
-phy_init,       data, phy,     0xf000,  4K,
-MicroPython,    app,  factory, 0x10000, 1920K,
-internalfs,     data, spiffs,  ,        1024K,
diff --git a/MicroPython_BUILD/sdkconfig.fw_psram_all b/MicroPython_BUILD/sdkconfig.fw_psram_all
index 1ef8aff..935b42a 100644
--- a/MicroPython_BUILD/sdkconfig.fw_psram_all
+++ b/MicroPython_BUILD/sdkconfig.fw_psram_all
@@ -31,7 +31,7 @@ CONFIG_FLASH_ENCRYPTION_ENABLED=
 #
 # Serial flasher config
 #
-CONFIG_ESPTOOLPY_PORT="/dev/ttyUSB1"
+CONFIG_ESPTOOLPY_PORT="/dev/ttyUSB0"
 CONFIG_ESPTOOLPY_BAUD_115200B=
 CONFIG_ESPTOOLPY_BAUD_230400B=
 CONFIG_ESPTOOLPY_BAUD_921600B=y
@@ -122,7 +122,7 @@ CONFIG_MICROPY_PY_FRAMEBUF=y
 CONFIG_MICROPY_PY_USE_BTREE=y
 CONFIG_MICROPY_USE_WEBSOCKETS=y
 CONFIG_MICROPY_USE_GSM=y
-CONFIG_MICROPY_USE_ETHERNET=y
+CONFIG_MICROPY_USE_ETHERNET=
 CONFIG_MICROPY_USE_MDNS=y
 CONFIG_MICROPY_USE_CURL=y
 CONFIG_MICROPY_USE_CURL_TLS=y