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...	...	@@ -11,6 +11,7 @@
11	11	Notes for using Dragino Devices with TTN Stack3.
12	12
13	13
	14	+
14	14	= 2.  Downlink =
15	15
16	16
...	...	@@ -35,16 +35,14 @@
35	35
36	36	[[image:image-20220526142338-3.png]]
37	37
38		-**find -h : broker address , -p port and -u: user name**
	39	+find -h : broker address , -p port and -u: user name
39	39
40	40
41		-
42	42	[[image:image-20220526142307-2.png]]
43	43
44		-**find -P : Password**
	44	+find -P : Password
45	45
46	46
47		-
48	48	User MQTT.FX to simulate a downlink
49	49
50	50	[[image:image-20220526142421-4.png]]
...	...	@@ -52,7 +52,6 @@
52	52	Use MQTT.FX to simulate downlink
53	53
54	54
55		-
56	56	Input connection info
57	57
58	58	[[image:image-20220526142512-5.png]]
...	...	@@ -60,7 +60,6 @@
60	60	Input MQTT connection info
61	61
62	62
63		-
64	64	Send a downstream
65	65
66	66	[[image:image-20220526142539-6.png]]
...	...	@@ -68,11 +68,9 @@
68	68	Gateway traffic for downstream
69	69
70	70
71		-
72	72	[[image:image-20220526142616-7.png||height="579" width="1407"]]
73	73
74	74
75		-
76	76	Downstream data flow will like below:
77	77
78	78	[[image:image-20220526142741-8.png]]
...	...	@@ -80,25 +80,21 @@
80	80	[[image:image-20220526142826-9.png]]
81	81
82	82
83		-= 3.  Trouble Shooting =
	78	+= 3. Trouble Shooting =
84	84
85		-== 3.1  Problem when register a device to TTNv3 if it is already register to TTNv2 ==
	80	+== 3.1 Problem when register a device to TTNv3 if it is already register to TTNv2 ==
86	86
87		-
88	88	When you register the device in V2 and V3 with the same key and EUI, the device can only connect to V2.
89	89
90		-
91	91	[[image:image-20220526142914-10.png]]
92	92
93	93	[[image:image-20220526143018-11.png||height="619" width="1049"]]
94	94
95		-
96	96	If you want the device to connect to V3. You must change your key and EUI, or delete the device registered on V2.
97	97
98	98
99		-== 3.2  MIC Mismatch or MIC Failed ==
	91	+== 3.2 MIC Mismatch or MIC Failed ==
100	100
101		-
102	102	(((
103	103	(((
104	104	When the device is registered or the device is working normally, the problem of MIC mismatch and MIC failed occurs.
...	...	@@ -108,8 +108,6 @@
108	108	(((
109	109	(((
110	110	Under normal circumstances, users need to change the APPKEY to solve this problem.
111		-
112		-
113	113	)))
114	114	)))
115	115