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1	1	(% class="wikigeneratedid" %)
2		-**~ Table of Contents:**
	2	+**~ Contents:**
3	3
4	4	{{toc/}}
5	5
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6	6
7	7	= 1. Introduction =
8	8
9		-
10	10	This article shows the firmware upgrade method and troubleshooting for the below models Dragino sensors.
11	11
12	12
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14	14
15	15	== 2.1 LDS01/LWL01 ==
16	16
17		-
18	18	[[Firmware Location>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS01/Firmware/]]
19	19
20		-
21	21	(((
22	22	Pin Mapping:
23	23	)))
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36	36
37	37	== 2.2 LDS02/LWL02 ==
38	38
39		-
40	40	[[Firmware Location(same as LDS01)>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS01/Firmware/]]
41	41
42		-
43	43	(((
44	44	Pin Mapping:
45	45	)))
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49	49	LDS02/LDS02 v2.0 Pin Mapping
50	50
51	51
52		-
53	53	[[image:image-20220527084230-4.png]]
54	54
55	55	LDS02/LDS02 v2.2 Pin Mapping
56	56
57	57
58		-
59	59	== 2.3 LHT52 ==
60	60
61		-
62	62	[[Firmware Location>>https://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LHT52/firmware/]]
63	63
64	64	[[image:image-20220527084401-5.png]]
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70	70
71	71	== 3.1 Use DAP-Link and Connect to the Device as above photos ==
72	72
73		-
74	74	We need to connect VDD，GND，SWCLK，SWDIO to DAP-Link.
75	75
76	76	* Connection method：
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88	88
89	89	== 3.2 Install PSoCProgrammer 3.27.1 ==
90	90
91		-
92	92	(((
93	93	Download Link: [[PSoCProgrammer3.27.1>>url:https://www.dragino.com/downloads/index.php?dir=tools/]]
94	94	)))
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102	102
103	103	== 3.3 Download Sensor Firmware ==
104	104
105		-
106	106	Downlink sensor firmware to prepare the update
107	107
108	108
109	109	== 3.4 Upgrade Firmware ==
110	110
111		-
112	112	Open PSOC Programmer, select the default configuration, no need to modify
113	113
114	114	[[image:image-20220527084612-8.png]]
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122	122	[[image:image-20220527084739-10.png||height="453" width="1034"]]
123	123
124	124
125		-
126	126	(((
127	127	Click the download icon, and the progress bar as shown in the figure below will appear. When PASS appears, it proves that the burning is successful.
128	128	)))
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137	137	)))
138	138
139	139	(((
140		-(% style="color:red" %)If you change different LoRa Frequency Bands/Region, you need using AT+FDR command to restore factory data after program success.
	127	+*If you change different LoRa Frequency Bands/Region, you need using AT+FDR command to restore factory data after program success.
141	141
142	142
143	143	)))
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146	146
147	147	== 4.1 Unable to detect upgrade ==
148	148
149		-
150	150	* Try to shot the bootloader pin to GND and reset the device. So the device will runs in bootloader mode.
151	151	* Or use AT+IREBOOT=7 to set the device to work in bootloader mode.