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141	141
142	142	==== 3.1.3.2 LB series ====
143	143
144		-* Hardware: LA66 USB
145		-[[image:image-20250213172807-1.png]][[image:image-20250213172928-2.png]]
146		-* Before using LA66 as a firmware burning tool for -LB products, you need to burn OTA_firmware for LA66 first.
	144	+* Hardware: [[LA66 USB>>url:https://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20USB%20LoRaWAN%20Adapter%20User%20Manual/||_mstmutation="1"]]
	145	+* Before using LA66 as -LB product to burn firmware, you need to burn the OTA_ firmware for LA66.
147	147	* The firmware burning method refers to the LA66 upgrade below.[[Click to redirect.>>https://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/#H3.1.3.3LA66upgrade]]
148	148
149		-
150	150	The LA66 USB connects to the phone via the USB-Type c adapter.
151	151
152	152	[[image:image-20241207113056-9.png||_mstalt="431366" height="240" width="555"]]
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174	174	Follow the steps in order:
175	175
176	176	(% class="wikigeneratedid" %)
177		-① Enter the DUIEI,t
	175	+① Enter the DUIEI,
178	178
179	179	(% class="wikigeneratedid" %)
180	180	② Enter the PIN (**the PIN is the last 8 bytes of APPSKEY**),
181	181
182	182	(% class="wikigeneratedid" %)
183		-③ Select the LoRa frequency to match the original frequency of the node,
	181	+③ Select the LoRa frequency,
184	184
185	185	(% class="wikigeneratedid" %)
186	186	④ Choose the upgrade file,(% style="color:red" %)**(The firmware upgrade file format only supports .bin files)**
187	187
188	188	(% class="wikigeneratedid" %)
189		-⑤ After pressing the device's reset button, click start.
	187	+⑤ After pressing the device's reset button, click start. **(If the upgrade does not start for a long time, you can press the device reset button again.If the user does not wish to open the casing, they can press and hold the KEY until the device flashes a green light; this action is equivalent to pressing the reset button.)**
190	190
	189	+[[image:image-20250111151237-1.png||_mstalt="427752"]]
	190	+
191	191	(% class="wikigeneratedid" %)
192		-**(If the upgrade does not start for a long time, you can press the device reset button again.**
	192	+For device tools version 1.4 and above, LB upgrade adds the following features:
193	193
194	194	(% class="wikigeneratedid" %)
195		-**If the user does not wish to open the casing, they can press and hold the KEY until the device flashes a green light; this action is equivalent to pressing the reset button.)**
	195	+(1) FRE1: display based on Frequency Band;
196	196
197		-[[image:image-20250213142919-1.png||height="428" width="329"]]
	197	+(% class="wikigeneratedid" %)
	198	+(2) FRE2: provide default value, generally do not modify;
198	198
	200	+(% class="wikigeneratedid" %)
	201	+(3) Output Power: Drop-down optional 2～22.
199	199
	203	+(% class="wikigeneratedid" %)
	204	+If there are no special needs, all the above functions do not need to be changed, and the default can be.
	205	+
	206	+
200	200	(% class="wikigeneratedid" id="H-2" %)
201	201	When the upgrade is complete, it will prompt:"**update successfully**".
202	202
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229	229	① Click "SELECT UPGRADE FILE" to choose the firmware to upgrade.
230	230
231	231	(% class="wikigeneratedid" %)
232		-**In order to ensure that the LA66 USB works properly, make sure that there is a corresponding bootloader before updating the firmware.**
	239	+**In order to ensure that the LA66 USB works properly, make sure that there is a corresponding bootloader before updating the firmware. If you don't have a bootloader, you need to use the "Tremo Programmer" software to download it.**
233	233
234	234	(% class="wikigeneratedid" %)
235		-**If you don't have a bootloader, you need to use the "Tremo Programmer" software to download it.**
236		-
237		-(% class="wikigeneratedid" %)
238	238	② Click "START".
239	239
240	240	(% class="wikigeneratedid" %)

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