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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.
147		-* If you have never downloaded LA66 OTA DongleV1.0 to your LA66, you can directly upgrade the LA66 OTA DongleV1.1 program from your phone using the following method.
148		-* [[bootlooder>>url:https://wiki.dragino.com/xwiki/bin/download/Main/BLE%20Bluetooth%20Remote%20Configure/WebHome/LoRa_OTA_Bootloader_v1.4.bin?rev=1.1]] and [[OTA_firmware>>url:https://wiki.dragino.com/xwiki/bin/download/Main/BLE%20Bluetooth%20Remote%20Configure/WebHome/LA66%20OTA%20DONGLE%20v1.1.bin?rev=1.1]].
	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.
149	149	* 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]]
150	150
151		-
152	152	The LA66 USB connects to the phone via the USB-Type c adapter.
153	153
154	154	[[image:image-20241207113056-9.png||_mstalt="431366" height="240" width="555"]]
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176	176	Follow the steps in order:
177	177
178	178	(% class="wikigeneratedid" %)
179		-① Enter the DUIEI,t
	175	+① Enter the DUIEI,
180	180
181	181	(% class="wikigeneratedid" %)
182	182	② Enter the PIN (**the PIN is the last 8 bytes of APPSKEY**),
183	183
184	184	(% class="wikigeneratedid" %)
185		-③ Select the LoRa frequency to match the original frequency of the node,
	181	+③ Select the LoRa frequency,
186	186
187	187	(% class="wikigeneratedid" %)
188	188	④ Choose the upgrade file,(% style="color:red" %)**(The firmware upgrade file format only supports .bin files)**
189	189
190	190	(% class="wikigeneratedid" %)
191		-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.)**
192	192
	189	+[[image:image-20250111151237-1.png||_mstalt="427752"]]
	190	+
193	193	(% class="wikigeneratedid" %)
194		-**(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:
195	195
196	196	(% class="wikigeneratedid" %)
197		-**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;
198	198
199		-[[image:image-20250213142919-1.png||height="428" width="329"]]
	197	+(% class="wikigeneratedid" %)
	198	+(2) FRE2: provide default value, generally do not modify;
200	200
	200	+(% class="wikigeneratedid" %)
	201	+(3) Output Power: Drop-down optional 2～22.
201	201
	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	+
202	202	(% class="wikigeneratedid" id="H-2" %)
203	203	When the upgrade is complete, it will prompt:"**update successfully**".
204	204
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231	231	① Click "SELECT UPGRADE FILE" to choose the firmware to upgrade.
232	232
233	233	(% class="wikigeneratedid" %)
234		-**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.**
235	235
236	236	(% class="wikigeneratedid" %)
237		-**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.**
238		-
239		-(% class="wikigeneratedid" %)
240	240	② Click "START".
241	241
242	242	(% class="wikigeneratedid" %)

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