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1	1	(% class="wikigeneratedid" %)
2		-**~ Contents:**
	2	+**~ Table of Contents:**
3	3
4	4	{{toc/}}
5	5
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6	6
7	7	= 1. Introduction =
8	8
	9	+
9	9	This article shows the firmware upgrade method and troubleshooting for the below models Dragino sensors.
10	10
11	11
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13	13
14	14	== 2.1 LDS01/LWL01 ==
15	15
	17	+
16	16	[[Firmware Location>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS01/Firmware/]]
17	17
	20	+
18	18	(((
19	19	Pin Mapping:
20	20	)))
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33	33
34	34	== 2.2 LDS02/LWL02 ==
35	35
	39	+
36	36	[[Firmware Location(same as LDS01)>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS01/Firmware/]]
37	37
	42	+
38	38	(((
39	39	Pin Mapping:
40	40	)))
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44	44	LDS02/LDS02 v2.0 Pin Mapping
45	45
46	46
	52	+
47	47	[[image:image-20220527084230-4.png]]
48	48
49	49	LDS02/LDS02 v2.2 Pin Mapping
50	50
51	51
	58	+
52	52	== 2.3 LHT52 ==
53	53
	61	+
54	54	[[Firmware Location>>https://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LHT52/firmware/]]
55	55
56	56	[[image:image-20220527084401-5.png]]
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62	62
63	63	== 3.1 Use DAP-Link and Connect to the Device as above photos ==
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	73	+
65	65	We need to connect VDD，GND，SWCLK，SWDIO to DAP-Link.
66	66
67	67	* Connection method：
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79	79
80	80	== 3.2 Install PSoCProgrammer 3.27.1 ==
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	91	+
82	82	(((
83	83	Download Link: [[PSoCProgrammer3.27.1>>url:https://www.dragino.com/downloads/index.php?dir=tools/]]
84	84	)))
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92	92
93	93	== 3.3 Download Sensor Firmware ==
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	105	+
95	95	Downlink sensor firmware to prepare the update
96	96
97	97
98	98	== 3.4 Upgrade Firmware ==
99	99
	111	+
100	100	Open PSOC Programmer, select the default configuration, no need to modify
101	101
102	102	[[image:image-20220527084612-8.png]]
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110	110	[[image:image-20220527084739-10.png||height="453" width="1034"]]
111	111
112	112
	125	+
113	113	(((
114	114	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.
115	115	)))
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124	124	)))
125	125
126	126	(((
127		-*If you change different LoRa Frequency Bands/Region, you need using AT+FDR command to restore factory data after program success.
	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.
128	128
129	129
130	130	)))
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133	133
134	134	== 4.1 Unable to detect upgrade ==
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	149	+
136	136	* Try to shot the bootloader pin to GND and reset the device. So the device will runs in bootloader mode.
137	137	* Or use AT+IREBOOT=7 to set the device to work in bootloader mode.