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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	149	The LA66 USB connects to the phone via the USB-Type c adapter.
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173	173	Follow the steps in order:
174	174
175	175	(% class="wikigeneratedid" %)
176		-① Enter the DUIEI,t
	175	+① Enter the DUIEI,
177	177
178	178	(% class="wikigeneratedid" %)
179	179	② Enter the PIN (**the PIN is the last 8 bytes of APPSKEY**),
180	180
181	181	(% class="wikigeneratedid" %)
182		-③ Select the LoRa frequency to match the original frequency of the node,
	181	+③ Select the LoRa frequency,
183	183
184	184	(% class="wikigeneratedid" %)
185	185	④ Choose the upgrade file,(% style="color:red" %)**(The firmware upgrade file format only supports .bin files)**
186	186
187	187	(% class="wikigeneratedid" %)
188		-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.)**
189	189
	189	+[[image:image-20250111151237-1.png||_mstalt="427752"]]
	190	+
190	190	(% class="wikigeneratedid" %)
191		-**(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:
192	192
193	193	(% class="wikigeneratedid" %)
194		-**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;
195	195
196		-[[image:image-20250213142919-1.png||height="428" width="329"]]
	197	+(% class="wikigeneratedid" %)
	198	+(2) FRE2: provide default value, generally do not modify;
197	197
	200	+(% class="wikigeneratedid" %)
	201	+(3) Output Power: Drop-down optional 2～22.
198	198
	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	+
199	199	(% class="wikigeneratedid" id="H-2" %)
200	200	When the upgrade is complete, it will prompt:"**update successfully**".
201	201
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228	228	① Click "SELECT UPGRADE FILE" to choose the firmware to upgrade.
229	229
230	230	(% class="wikigeneratedid" %)
231		-**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.**
232	232
233	233	(% class="wikigeneratedid" %)
234		-**If you don't have a bootloader, you need to use the "[[Tremo Programmer>>https://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H3.1.3Howtouploadbootloadertodevice3F]]" software to download it.**
235		-
236		-(% class="wikigeneratedid" %)
237	237	② Click "START".
238	238
239	239	(% class="wikigeneratedid" %)

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