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...	...	@@ -134,58 +134,62 @@
134	134
135	135	== Upgrade Firmware of LA66 LoRaWAN Shield ==
136	136
137		-=== what needs to be used ===
	137	+=== Items needed for update ===
138	138
139		-1.LA66 LoRaWAN Shield that needs to be upgraded
	139	+1. LA66 LoRaWAN Shield
	140	+1. Arduino
	141	+1. USB TO TTL Adapter
140	140
141		-2.Arduino
	143	+[[image:image-20220602100052-2.png||height="385" width="600"]]
142	142
143		-3.USB TO TTL
144	144
145		-[[image:image-20220602100052-2.png]]
	146	+=== Connection ===
146	146
147		-=== Wiring Schematic ===
	148	+[[image:image-20220602101311-3.png||height="276" width="600"]]
148	148
149		-[[image:image-20220602101311-3.png]]
	150	+(% style="color:blue" %)**LA66 LoRaWAN Shield**(%%)  <-> (% style="color:blue" %)**USB TTL**(%%)
	151	+**GND  <-> GND
	152	+TXD  <-> TXD
	153	+RXD  <-> RXD**
150	150
151		-LA66 LoRaWAN Shield  >>>>>>>>>>>>USB TTL
	155	+Put a jumper cap on JP6 of LA66 LoRaWAN Shield.
152	152
153		-GND  >>>>>>>>>>>>GND
	157	+Connect USB TTL Adapter to PC after connecting the wires
154	154
155		-TXD  >>>>>>>>>>>>TXD
156	156
157		-RXD  >>>>>>>>>>>>RXD
	160	+[[image:image-20220602102240-4.png||height="304" width="600"]]
158	158
159		-JP6 of LA66 LoRaWAN Shield needs to be connected with yellow jumper cap
160	160
161		-Connect to the PC after connecting the wires
	163	+=== Upgrade steps ===
162	162
163		-[[image:image-20220602102240-4.png]]
	165	+==== Switch SW1 to put in ISP position ====
164	164
165		-=== Upgrade steps ===
	167	+[[image:image-20220602102824-5.png||height="306" width="600"]]
166	166
167		-==== Dial the SW1 of the LA66 LoRaWAN Shield to the ISP's location as shown in the figure below ====
168	168
169		-[[image:image-20220602102824-5.png]]
	170	+==== Press the RST switch once ====
170	170
171		-==== Press the RST switch on the LA66 LoRaWAN Shield once ====
	172	+[[image:image-20220602104701-12.png||height="285" width="600"]]
172	172
173		-[[image:image-20220602104701-12.png]]
174	174
175		-==== Open the upgrade application software ====
	175	+==== Open the Upgrade tool (Tremo Programmer) in PC and Upgrade ====
176	176
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/]]
	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/]]**
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 =====
184	184
	184	+(% class="wikigeneratedid" id="HSelecttheCOMportcorrespondingtoUSBTTL" %)
	185	+**2. Select the COM port corresponding to USB TTL**
	186	+
185	185	[[image:image-20220602103844-8.png]]
186	186
187		-===== Select the bin file to burn =====
188	188
	190	+(% class="wikigeneratedid" id="HSelectthebinfiletoburn" %)
	191	+**3. Select the bin file to burn**
	192	+
189	189	[[image:image-20220602104144-9.png]]
190	190
191	191	[[image:image-20220602104251-10.png]]
...	...	@@ -192,16 +192,22 @@
192	192
193	193	[[image:image-20220602104402-11.png]]
194	194
195		-===== Click to start the download =====
196	196
	200	+(% class="wikigeneratedid" id="HClicktostartthedownload" %)
	201	+**4. Click to start the download**
	202	+
197	197	[[image:image-20220602104923-13.png]]
198	198
199		-===== The following figure appears to prove that the burning is in progress =====
200	200
	206	+(% class="wikigeneratedid" id="HThefollowingfigureappearstoprovethattheburningisinprogress" %)
	207	+**5. Check update process**
	208	+
201	201	[[image:image-20220602104948-14.png]]
202	202
203		-===== The following picture appears to prove that the burning is successful =====
204	204
	212	+(% class="wikigeneratedid" id="HThefollowingpictureappearstoprovethattheburningissuccessful" %)
	213	+**The following picture shows that the burning is successful**
	214	+
205	205	[[image:image-20220602105251-15.png]]
206	206
207	207
...	...	@@ -226,9 +226,6 @@
226	226	* LA66 LoRaWAN Shield x 1
227	227	* RF Antenna x 1
228	228
229		-
230		-
231		-
232	232	= LA66 USB LoRaWAN Adapter =
233	233
234	234	== Overview ==
...	...	@@ -249,8 +249,6 @@
249	249	* AT Command via UART-TTL interface
250	250	* Firmware upgradable via UART interface
251	251
252		-
253		-
254	254	== Specification ==
255	255
256	256	* CPU: 32-bit 48 MHz
...	...	@@ -269,8 +269,6 @@
269	269	* LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
270	270	* LoRa Rx current: <9 mA
271	271
272		-
273		-
274	274	== Pin Mapping & LED ==
275	275
276	276	== Example Send & Get Messages via LoRaWAN in PC ==