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...	...	@@ -134,62 +134,58 @@
134	134
135	135	== Upgrade Firmware of LA66 LoRaWAN Shield ==
136	136
137		-=== Items needed for update ===
	137	+=== what needs to be used ===
138	138
139		-1. LA66 LoRaWAN Shield
140		-1. Arduino
141		-1. USB TO TTL Adapter
	139	+1.LA66 LoRaWAN Shield that needs to be upgraded
142	142
143		-[[image:image-20220602100052-2.png||height="385" width="600"]]
	141	+2.Arduino
144	144
	143	+3.USB TO TTL
145	145
146		-=== Connection ===
	145	+[[image:image-20220602100052-2.png]]
147	147
148		-[[image:image-20220602101311-3.png||height="276" width="600"]]
	147	+=== Wiring Schematic ===
149	149
150		-(% style="color:blue" %)**LA66 LoRaWAN Shield**(%%)  <-> (% style="color:blue" %)**USB TTL**(%%)
151		-**GND  <-> GND
152		-TXD  <-> TXD
153		-RXD  <-> RXD**
	149	+[[image:image-20220602101311-3.png]]
154	154
155		-Put a jumper cap on JP6 of LA66 LoRaWAN Shield.
	151	+LA66 LoRaWAN Shield  >>>>>>>>>>>>USB TTL
156	156
157		-Connect USB TTL Adapter to PC after connecting the wires
	153	+GND  >>>>>>>>>>>>GND
158	158
	155	+TXD  >>>>>>>>>>>>TXD
159	159
160		-[[image:image-20220602102240-4.png||height="304" width="600"]]
	157	+RXD  >>>>>>>>>>>>RXD
161	161
	159	+JP6 of LA66 LoRaWAN Shield needs to be connected with yellow jumper cap
162	162
163		-=== Upgrade steps ===
	161	+Connect to the PC after connecting the wires
164	164
165		-==== Switch SW1 to put in ISP position ====
	163	+[[image:image-20220602102240-4.png]]
166	166
167		-[[image:image-20220602102824-5.png||height="306" width="600"]]
	165	+=== Upgrade steps ===
168	168
	167	+==== Dial the SW1 of the LA66 LoRaWAN Shield to the ISP's location as shown in the figure below ====
169	169
170		-==== Press the RST switch once ====
	169	+[[image:image-20220602102824-5.png]]
171	171
172		-[[image:image-20220602104701-12.png||height="285" width="600"]]
	171	+==== Press the RST switch on the LA66 LoRaWAN Shield once ====
173	173
	173	+[[image:image-20220602104701-12.png]]
174	174
175		-==== Open the Upgrade tool (Tremo Programmer) in PC and Upgrade ====
	175	+==== Open the upgrade application software ====
176	176
177		-**~1. Software download link:  [[https:~~/~~/www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/Utility/LSN50N/>>https://www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/Utility/LSN50N/]]**
	177	+Software download link:  [[https:~~/~~/www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/Utility/LSN50N/>>https://www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/Utility/LSN50N/]]
178	178
179	179	[[image:image-20220602103227-6.png]]
180	180
181	181	[[image:image-20220602103357-7.png]]
182	182
	183	+===== Select the COM port corresponding to USB TTL =====
183	183
184		-(% class="wikigeneratedid" id="HSelecttheCOMportcorrespondingtoUSBTTL" %)
185		-**2. Select the COM port corresponding to USB TTL**
186		-
187	187	[[image:image-20220602103844-8.png]]
188	188
	187	+===== Select the bin file to burn =====
189	189
190		-(% class="wikigeneratedid" id="HSelectthebinfiletoburn" %)
191		-**3. Select the bin file to burn**
192		-
193	193	[[image:image-20220602104144-9.png]]
194	194
195	195	[[image:image-20220602104251-10.png]]
...	...	@@ -196,22 +196,16 @@
196	196
197	197	[[image:image-20220602104402-11.png]]
198	198
	195	+===== Click to start the download =====
199	199
200		-(% class="wikigeneratedid" id="HClicktostartthedownload" %)
201		-**4. Click to start the download**
202		-
203	203	[[image:image-20220602104923-13.png]]
204	204
	199	+===== The following figure appears to prove that the burning is in progress =====
205	205
206		-(% class="wikigeneratedid" id="HThefollowingfigureappearstoprovethattheburningisinprogress" %)
207		-**5. Check update process**
208		-
209	209	[[image:image-20220602104948-14.png]]
210	210
	203	+===== The following picture appears to prove that the burning is successful =====
211	211
212		-(% class="wikigeneratedid" id="HThefollowingpictureappearstoprovethattheburningissuccessful" %)
213		-**The following picture shows that the burning is successful**
214		-
215	215	[[image:image-20220602105251-15.png]]
216	216
217	217
...	...	@@ -236,6 +236,9 @@
236	236	* LA66 LoRaWAN Shield x 1
237	237	* RF Antenna x 1
238	238
	229	+
	230	+
	231	+
239	239	= LA66 USB LoRaWAN Adapter =
240	240
241	241	== Overview ==
...	...	@@ -256,6 +256,8 @@
256	256	* AT Command via UART-TTL interface
257	257	* Firmware upgradable via UART interface
258	258
	252	+
	253	+
259	259	== Specification ==
260	260
261	261	* CPU: 32-bit 48 MHz
...	...	@@ -274,6 +274,8 @@
274	274	* LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
275	275	* LoRa Rx current: <9 mA
276	276
	272	+
	273	+
277	277	== Pin Mapping & LED ==
278	278
279	279	== Example Send & Get Messages via LoRaWAN in PC ==