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172	172	Follow the steps in order:
173	173
174	174	(% class="wikigeneratedid" %)
175		-① Enter the DUIEI,t
	175	+① Enter the DUIEI,
176	176
177	177	(% class="wikigeneratedid" %)
178	178	② Enter the PIN (**the PIN is the last 8 bytes of APPSKEY**),
179	179
180	180	(% class="wikigeneratedid" %)
181		-③ Select the LoRa frequency to match the original frequency of the node,
	181	+③ Select the LoRa frequency,
182	182
183	183	(% class="wikigeneratedid" %)
184	184	④ Choose the upgrade file,(% style="color:red" %)**(The firmware upgrade file format only supports .bin files)**
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186	186	(% class="wikigeneratedid" %)
187	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.)**
188	188
189		-[[image:image-20250213142919-1.png||height="428" width="329"]]
	189	+[[image:image-20250111151237-1.png||_mstalt="427752"]]
190	190
	191	+(% class="wikigeneratedid" %)
	192	+For device tools version 1.4 and above, LB upgrade adds the following features:
191	191
	194	+(% class="wikigeneratedid" %)
	195	+(1) FRE1: display based on Frequency Band;
	196	+
	197	+(% class="wikigeneratedid" %)
	198	+(2) FRE2: provide default value, generally do not modify;
	199	+
	200	+(% class="wikigeneratedid" %)
	201	+(3) Output Power: Drop-down optional 2～22.
	202	+
	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	+
192	192	(% class="wikigeneratedid" id="H-2" %)
193	193	When the upgrade is complete, it will prompt:"**update successfully**".
194	194

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1		-XWiki.wy

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