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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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24	24	LDS01/LWL01 Pin Mapping
25	25
26	26
27		-DAP-Link Connection:
	30	+**DAP-Link Connection:**
28	28
29	29	[[image:image-20220527083959-2.png]]
30	30
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31	31	Connect DAP-Link
32	32
33	33
	37	+
34	34	== 2.2 LDS02/LWL02 ==
35	35
	40	+
36	36	[[Firmware Location(same as LDS01)>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS01/Firmware/]]
37	37
	43	+
38	38	(((
39	39	Pin Mapping:
40	40	)))
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44	44	LDS02/LDS02 v2.0 Pin Mapping
45	45
46	46
	53	+
47	47	[[image:image-20220527084230-4.png]]
48	48
49	49	LDS02/LDS02 v2.2 Pin Mapping
50	50
51	51
	59	+
52	52	== 2.3 LHT52 ==
53	53
	62	+
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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58	58	LHT52 Pin Mapping
59	59
60	60
	70	+
61	61	= 3. How to Upgrade =
62	62
63	63	== 3.1 Use DAP-Link and Connect to the Device as above photos ==
64	64
	75	+
65	65	We need to connect VDD，GND，SWCLK，SWDIO to DAP-Link.
66	66
67	67	* Connection method：
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77	77	[[image:image-20220527084505-6.png]]
78	78
79	79
	91	+
80	80	== 3.2 Install PSoCProgrammer 3.27.1 ==
81	81
	94	+
82	82	(((
83	83	Download Link: [[PSoCProgrammer3.27.1>>url:https://www.dragino.com/downloads/index.php?dir=tools/]]
84	84	)))
85	85
86	86	(((
87		-And then use PSoCProgrammer to upgrade the firmware (must use this version: PSoCProgrammer3.27.1)
	100	+And then use PSoCProgrammer to upgrade the firmware ( (% style="color:red" %) must use this version: PSoCProgrammer3.27.1 (%%))
88	88	)))
89	89
90	90	[[image:image-20220527084537-7.png]]
91	91
92	92
	106	+
93	93	== 3.3 Download Sensor Firmware ==
94	94
	109	+
95	95	Downlink sensor firmware to prepare the update
96	96
97	97
	113	+
98	98	== 3.4 Upgrade Firmware ==
99	99
	116	+
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
	130	+
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.
128		-
129		-
	145	+(% style="color:red" %)If you change different LoRa Frequency Bands/Region, you need using AT+FDR command to restore factory data after program success.
130	130	)))
131	131
	148	+
132	132	= 4. Trouble Shooting =
133	133
134	134	== 4.1 Unable to detect upgrade ==
135	135
	153	+
136	136	* Try to shot the bootloader pin to GND and reset the device. So the device will runs in bootloader mode.
137		-* Or use AT+IREBOOT=7 to set the device to work in bootloader mode.
	155	+
	156	+* Or use **(% style="color:blue" %)AT+IREBOOT=7**(%%) to set the device to work in bootloader mode.