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34		-
35	35	= 3. UART Upgrade Guide =
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37	37	== 3.1 Hardware Connection ==
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46	46
47	47	=== 3.1.2 LSN50 v2/LSN50v2-D22/LSN50v2-D23 ===
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	48	+
49	49	[[image:image-20220526173751-3.png||height="467" width="966"]]
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51	51	Connection for LSN50 Type V2
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53	53
54	54	=== 3.1.3 RS485-BL/LDDS75/LDDS20/LSE01 ===
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	56	+
56	56	[[image:image-20220526174856-17.png||height="629" width="976"]]
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58	58	Connection for RS485-BL base mother board
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	61	+
60	60	For UART Update, need:
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62	62	* Connect USB-TTL TXD <~-~-> Device UART_RX
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65	65	* Put Switch SW1 to ISP position
66	66	* Connect JP2 jumper (Yellow one), so device is power on.
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	70	+
	71	+
68	68	== 3.2 Upgrade Steps ==
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70		-(((
71		-Step 1: Download [[Flash Loader>>url:https://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/flasher-stm32.html]].
72		-)))
73	73
74	74	(((
75		-Step 2: Download the Image files, which can be found in the product user manual.
	76	+(% style="color:blue" %)**Step 1:**(%%) Download [[Flash Loader>>url:https://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/flasher-stm32.html]].
76	76	)))
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79		-Step 3: Open Flashloader; choose the correct COM port to update, Please notice that the serial setting must follow below photos.
	80	+(% style="color:blue" %)**Step 2:**(%%) Download the Image files, which can be found in the product user manual.
80	80	)))
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82	82	(((
83		-Step 4: Set The device into **ISP Mode**. Then Press the **Reset Button**, In the Flash tool, click next and the tool will detect the board type.
	84	+(% style="color:blue" %)**Step 3:**(%%) Open Flashloader; choose the correct COM port to update, Please notice that the serial setting must follow below photos.
84	84	)))
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86		-(% class="box warningmessage" %)
87	87	(((
88		-**Note:** ISP Mode can be a switch or a button, depends on the product. The device only need to be in ISP mode when press the reset button for UART Upgrade. So if the device is of a button type ISP mode, user can release the ISP button after press the reset button.
	88	+(% style="color:blue" %)**Step 4: **(%%)Set The device into **(% style="color:#037691" %)ISP Mode**(%%). Then Press the **(% style="color:#037691" %)Reset Button**(%%), In the Flash tool, click next and the tool will detect the board type.
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	90	+
	91	+(% style="color:red" %)**Note:**  (%%)ISP Mode can be a switch or a button, depends on the product. The device only need to be in ISP mode when press the reset button for UART Upgrade. So if the device is of a button type ISP mode, user can release the ISP button after press the reset button.
89	89	)))
90	90
91	91	[[image:image-20220526174302-11.png]]
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109	109	(((
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111		-Step 5: For switch type ISP Mode, After upgrade,please remember to switch back to Flash mode and press RESET Button to run the firmware.
	114	+(% style="color:blue" %)**Step 5:**(%%) For switch type ISP Mode, After upgrade,please remember to switch back to Flash mode and press RESET Button to run the firmware.
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117		-Step 6: Always run AT+FDR after update firmware. This is to reset the device to factory settings of the new firmware.
	120	+(% style="color:blue" %)**Step 6:**(%%) Always run AT+FDR after update firmware. This is to reset the device to factory settings of the new firmware.
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119	119	)))
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