Wiki source code of OTA Update Firmware/Configure for Sensors

Version 80.1 by Mengting Qiu on 2025/02/19 10:31

version	line-number	content
8.1	1	Table of Contents:
	2
	3	{{toc/}}
	4
	5
11.2	6
10.2	7	= 1. Overview =
1.1	8
10.2	9
23.1	10	There are some new models of Dragino sensors support OTA update via Private LoRa Protocol, (Even the sensor runs LoRaWAN protocol by default).
1.1	11
23.1	12	User can use the OTA update to update the configure file or firmware to the sensors.
1.1	13
23.1	14
10.2	15	= 2. Support Models =
	16
	17
1.1	18	Here list the models that support OTA Update.
	19
	20	{{velocity}}
	21	$xwiki.ssfx.use("js/xwiki/table/table.css")
	22	$xwiki.jsfx.use("js/xwiki/table/tablefilterNsort.js", true)
	23	{{/velocity}}
	24
32.2	25	(% border="1" cellspacing="5" class="doOddEven filterable grid sortable" id="tableid" style="background-color:#ffffff; width:670px" %)
	26	(% class="sortHeader" %)\|=(% style="width: 258px; background-color: rgb(217, 226, 243);" %)Models\|=(% style="width: 158px; background-color: rgb(217, 226, 243);" %)Firmware Version\|=(% style="width: 251px;background-color:#D9E2F3" %)Comments
	27	\|(% style="width:258px" %)RS485-LB/LS\|(% style="width:158px" %)All firmware version\|(% style="width:251px" %)
	28	\|(% style="width:258px" %)SN50v3-LB\|(% style="width:158px" %)All firmware version\|(% style="width:251px" %)
	29	\|(% style="width:258px" %)PS-LB-NA\|(% style="width:158px" %)All firmware version\|(% style="width:251px" %)
	30	\|(% style="width:258px" %)TS01-LB/LS\|(% style="width:158px" %)All firmware version\|(% style="width:251px" %)
	31	\|(% style="width:258px" %)CS01-LB\|(% style="width:158px" %)All firmware version\|(% style="width:251px" %)
	32	\|(% style="width:258px" %)AIS01-LB\|(% style="width:158px" %)All firmware version\|(% style="width:251px" %)
	33	\|(% style="width:258px" %)TC01-LB/ TC11-LB\|(% style="width:158px" %)All Firmware Version\|(% style="width:251px" %)
	34	\|(% style="width:258px" %)LHT65N\|(% style="width:158px" %)All Firmware Version\|(% style="width:251px" %)
	35	\|(% style="width:258px" %)LHT65N-PIR,LHT65N-E31F\|(% style="width:158px" %)All Firmware Version\|(% style="width:251px" %)
	36	\|(% style="width:258px" %)D20-LB/D20S-LB/D22-LB/D23-LB\|(% style="width:158px" %)All Firmware Version\|(% style="width:251px" %)
	37	\|(% style="width:258px" %)S31/S31B-LB/LS\|(% style="width:158px" %)All Firmware Version\|(% style="width:251px" %)
	38	\|(% style="width:258px" %)AQS01-L\|(% style="width:158px" %)All Firmware Version\|(% style="width:251px" %)
	39	\|(% style="width:258px" %)UV254-LB\|(% style="width:158px" %)All Firmware Version\|(% style="width:251px" %)
	40	\|(% style="width:258px" %)SDI-12-LB/LS\|(% style="width:158px" %)All Firmware Version\|(% style="width:251px" %)
	41	\|(% style="width:258px" %)SE01-LB/LS\|(% style="width:158px" %)All Firmware Version\|(% style="width:251px" %)
	42	\|(% style="width:258px" %)PS-LB\|(% style="width:158px" %)All Firmware Version\|(% style="width:251px" %)
	43	\|(% style="width:258px" %)SE02-LB\|(% style="width:158px" %)All Firmware Version\|(% style="width:251px" %)
	44	\|(% style="width:258px" %)SPH01-LB/LS\|(% style="width:158px" %)All Firmware Version\|(% style="width:251px" %)
	45	\|(% style="width:258px" %)LMS01-LB/LS\|(% style="width:158px" %)All Firmware Version\|(% style="width:251px" %)
	46	\|(% style="width:258px" %)WL03A-LB/LS\|(% style="width:158px" %)All Firmware Version\|(% style="width:251px" %)
	47	\|(% style="width:258px" %)DS03A-LB/LS\|(% style="width:158px" %)All Firmware Version\|(% style="width:251px" %)
	48	\|(% style="width:258px" %)CPL03-LB/LS\|(% style="width:158px" %)All Firmware Version\|(% style="width:251px" %)
	49	\|(% style="width:258px" %)SW3L-LB/LS\|(% style="width:158px" %)All Firmware Version\|(% style="width:251px" %)
	50	\|(% style="width:258px" %)LCC01-LB\|(% style="width:158px" %)All Firmware Version\|(% style="width:251px" %)
	51	\|(% style="width:258px" %)PS-LB/LS\|(% style="width:158px" %)All Firmware Version\|(% style="width:251px" %)
	52	\|(% style="width:258px" %)LDS12-LB/LS\|(% style="width:158px" %)All Firmware Version\|(% style="width:251px" %)
	53	\|(% style="width:258px" %)LDS40-LB/LS\|(% style="width:158px" %)All Firmware Version\|(% style="width:251px" %)
	54	\|(% style="width:258px" %)DDS75-LB/LS\|(% style="width:158px" %)All Firmware Version\|(% style="width:251px" %)
	55	\|(% style="width:258px" %)DDS45-LB/LS\|(% style="width:158px" %)All Firmware Version\|(% style="width:251px" %)
	56	\|(% style="width:258px" %)DDS20-LB/LS\|(% style="width:158px" %)All Firmware Version\|(% style="width:251px" %)
	57	\|(% style="width:258px" %)DDS04-LB/LS\|(% style="width:158px" %)All Firmware Version\|(% style="width:251px" %)
	58	\|(% style="width:258px" %)MDS120-LB/LS\|(% style="width:158px" %)All Firmware Version\|(% style="width:251px" %)
	59	\|(% style="width:258px" %)MDS200-LB/LS\|(% style="width:158px" %)All Firmware Version\|(% style="width:251px" %)
	60	\|(% style="width:258px" %)DS20L\|(% style="width:158px" %)All Firmware Version\|(% style="width:251px" %)
2.1	61
10.2	62	= 3. How to do OTA update =
	63
	64	== 3.1 Required Components ==
	65
45.1	66	* See FAQ 4.4 for how to update LA66 with the [[OTA Dongle Firmware>>https://www.dropbox.com/scl/fo/ztlw35a9xbkomu71u31im/AFhmjtEOaipfBAFrpMCoWrI/LoRaWAN%20End%20Node/LA66%20LoRaWAN%20module/Firmware/OTA_Firmware?dl=0&rlkey=ojjcsw927eaow01dgooldq3nu&subfolder_nav_tracking=1]].
29.1	67	* Software: [[OTA_Tool>>https://www.dropbox.com/scl/fo/9kqeqf6wmet10o9hgxuwa/h?rlkey=4ikrg6kg5v0yjxwhp0i37wrv7&dl=0]]. Only support Windows now
7.1	68
16.1	69	[[image:image-20230513120722-2.png\|\|height="409" width="866"]]
7.1	70
14.1	71
57.1	72	== 3.2 OTA Update Firmware via Mobile Phone + LA66 ==
10.2	73
75.1	74	=== 3.2.1 LA66 upgrade ===
10.2	75
75.1	76	The LA66 USB connects to the phone via the USB-Type C adapter.
57.1	77
75.1	78	[[image:image-20250214161955-7.png]]
70.2	79
	80
75.1	81	After the connection is successful, the phone will pop up a prompt box, check it, and click to "OK".
70.2	82
78.1	83	(% style="color:red" %)Note: (%%)Some mobile phone models need to manually enable the OTG function to properly identify external devices.
70.2	84
75.1	85	[[image:image-20250214162012-8.png]]
70.2	86
	87
	88	(% class="wikigeneratedid" id="H-1" %)
70.4	89	Then, the Device Tool will automatically jump to the main interface of the tool.
70.2	90
	91	(% class="wikigeneratedid" %)
75.1	92	In the upper left corner of the main interface of the software, click (% _mstmutation="1" style="color:blue" %)"Upgrade Device"(%%) and select the "(% _mstmutation="1" style="color:blue" %)LaA66"(%%) type.
70.2	93
	94	(% class="wikigeneratedid" %)
75.1	95	[[image:image-20250219095423-2.png]]
70.2	96
	97	(% class="wikigeneratedid" %)
75.1	98	Follow the steps in order:
70.2	99
	100	(% class="wikigeneratedid" %)
75.1	101	① Click "SELECT UPGRADE FILE" to choose the firmware to upgrade.
70.2	102
	103	(% class="wikigeneratedid" %)
75.1	104	② After clicking Start, wait for the LA66 to burn in
70.2	105
	106	(% class="wikigeneratedid" %)
75.1	107	[[image:image-20250214162029-9.png]]
70.2	108
	109	(% class="wikigeneratedid" %)
70.5	110	(% style="color:red" %)Note:
70.2	111
	112	(% class="wikigeneratedid" %)
75.1	113	~1. In order to ensure that the LA66 USB works properly, make sure that there is a corresponding bootloader before updating the firmware.
70.2	114
70.5	115	(% class="wikigeneratedid" %)
75.1	116	2. 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. Click to get [[bootlooder>>url:https://wiki.dragino.com/xwiki/bin/download/Main/BLE%20Bluetooth%20Remote%20Configure/WebHome/LoRa_OTA_Bootloader_v1.4.bin?rev=1.1]], then refer to this [[link>>https://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20USB%20LoRaWAN%20Adapter%20User%20Manual/#H1.10.2Updatemethod:A0ForLA66withoutbootloader]] for instructions to burn.
70.5	117
70.2	118
75.1	119	When the upgrade is complete, it will prompt:"update successfully".
70.2	120
78.1	121	[[image:image-20250219100549-3.png\|\|height="484" width="362"]]
70.2	122
	123
75.1	124	=== 3.2.2 LB series ===
70.2	125
75.1	126	* Upgrade of external tools: LA66 USB
	127	[[image:image-20250214161740-1.png]][[image:image-20250214161758-2.png]]
	128	* Before using LA66 as a firmware burning tool for -LB products, you need to burn OTA_DONGLE for LA66 first.
78.1	129	* Click to get [[OTA_DONGLE V1.1.>>https://www.dropbox.com/scl/fo/ztlw35a9xbkomu71u31im/ALF3WtzilGPi-2nOdtQw1Z4/Utility/Sensor%20Manager%20Utility/OTA_Firmware?dl=0&rlkey=ojjcsw927eaow01dgooldq3nu&subfolder_nav_tracking=1]]
70.2	130
75.1	131	[[image:image-20250219094223-1.png\|\|height="324" width="698"]]
70.2	132
78.1	133	* Refer to [[Section 3.2.1>>\|\|anchor="H3.2.1LA66upgrade"]] to burn OTA DONGLEV1.1 for LA66.
70.2	134
75.1	135	The LA66 USB connects to the phone via the USB-Type c adapter.
70.2	136
75.1	137	[[image:image-20250214161844-3.png]]
70.2	138
	139
75.1	140	After the connection is successful, the phone will pop up a prompt box, check it and click to confirm.
70.2	141
75.1	142	(% style="color:red" %)Note:(%%)Some models of cell phones require the OTG function of the cell phone system to be enabled manually in order to recognize the external device correctly.
70.2	143
75.1	144	[[image:image-20250214161907-4.png]]
	145
	146
70.2	147	(% class="wikigeneratedid" id="H-1" %)
70.5	148	Then, the Device Tool will automatically jump to the main interface of the tool.
70.2	149
	150	(% class="wikigeneratedid" %)
75.1	151	In the upper left corner of the main interface of the software, click (% _mstmutation="1" style="color:blue" %)"Upgrade Device"(%%) and select the LB type.
70.5	152
	153	(% class="wikigeneratedid" %)
78.1	154	[[image:image-20250219100821-4.png]]
	155
	156
	157	(% class="wikigeneratedid" %)
70.2	158	Follow the steps in order:
	159
	160	(% class="wikigeneratedid" %)
78.1	161	① Enter the DUIEI,.
70.2	162
	163	(% class="wikigeneratedid" %)
78.1	164	② Enter the PIN (the PIN is the last 8 bytes of APPSKEY, It's 16 characters in total).
70.2	165
	166	(% class="wikigeneratedid" %)
78.1	167	③ Select the LoRa frequency to match the original frequency of the node.
70.2	168
	169	(% class="wikigeneratedid" %)
75.1	170	④ Choose the upgrade file,(% style="color:red" %)(The firmware upgrade file format only supports .bin files)
70.2	171
	172	(% class="wikigeneratedid" %)
78.1	173	⑤ Press the reset button of the device to be upgraded and click "Start".
70.2	174
70.5	175	(% class="wikigeneratedid" %)
75.1	176	(% style="color:red" %)Note:
70.2	177
	178	(% class="wikigeneratedid" %)
78.1	179	~1. If you are unable to access the upgrade for an extended period of time, you can perform the device reset step again.
70.2	180
75.1	181	(% class="wikigeneratedid" %)
78.1	182	2. If you do not want to open the cover of the device to be upgraded, you can hold down the ACT key for 5s until the device blinks green. This action is the equivalent of pressing the reset button.
70.5	183
75.1	184	[[image:image-20250214161928-5.png]]
70.5	185
70.2	186
75.1	187	(% class="wikigeneratedid" id="H-2" %)
	188	When the upgrade is complete, it will prompt:"update successfully".
70.2	189
75.1	190	[[image:image-20250214161941-6.png]]
70.2	191
75.1	192
57.1	193	== 3.3 OTA Update Firmware via PC ==
	194
	195
21.1	196	(% class="wikigeneratedid" %)
24.1	197	(% class="mark text-uppercase" %)Video Instruction:(%%) ~-~- OTA Upgrade Firmware (via LoRa) of LoRaWAN Sensors: [[https:~~/~~/youtu.be/SSvOqvBrwGg>>https://youtu.be/SSvOqvBrwGg]]
21.1	198
	199
30.1	200	=== (% style="color:blue" %)Step1:(%%) Plug LA66 USB to PC and run OTA_Tool. ===
10.2	201
	202
40.1	203	[[image:image-20250121091115-1.png]]
7.1	204
	205
10.2	206	=== (% style="color:blue" %)Step2:(%%) Set up OTA Tool ===
7.1	207
	208
27.1	209	* (% style="color:blue" %)DevEUI(%%): Input DevEUI of your sensor
10.2	210
56.1	211	* (% style="color:blue" %)Password(%%): Passord of your sensor(Last eight bytes/ Last 16 characters of APPSKEY)
10.2	212
	213	* (% style="color:blue" %)Port(%%): Com port of LA66 USB
	214
	215	* (% style="color:blue" %)LoRa_Freq(%%): Choose the shipped frequency band of your sensor.
	216
	217	* (% style="color:blue" %)Upload_File(%%): The firmware to be upload to the sensor. make sure the firmware is with surfix _without_bootloader. For example: LHT65N_EU868_v1.5_without_bootloader.
	218
45.1	219	* (% style="color:blue" %)DEUI_File(%%): If customer has lots of sensors. He can also import the Dev EUI files and use droplist to choose the sensor to update. (If you did not ask us for a uniform update file, then you do not need to use this field, please ignore it.) Format is as below:
10.2	220
7.1	221	[[image:image-20230114174640-3.png\|\|height="130" width="1169"]]
	222
	223
40.1	224	=== (% style="color:blue" %)Step3:(%%) After re-plugging the LA66 USB, click "Start" in the OTA tool. ===
7.1	225
10.2	226
40.1	227	Upon re-plugging, the LA66 USB will reboot and broadcast the update process using the Dev EUI and passcode
7.1	228
	229
10.2	230	=== (% style="color:blue" %)Step4: (%%)Press reset button on the end node, or re-activate the end node. ===
7.1	231
40.1	232	When the OTA Tool displays “LA66 is scanning for sensor Dev EUI ‘(% style="color:blue" %)DevEUI(%%)’. Please reset the sensor for connection and update”, press and hold the ACT button on the terminal node for 5 seconds to perform a terminal node reset so that the OTA Tool can connect successfully.
10.2	233
40.1	234	[[image:image-20250121093705-3.png]]
	235
7.1	236	In every reboot/ reactivate, the end node will check if there is update request. If end node gets the update request from LA66. End node will check if the Dev EUI and Password match. If match, End node will establish connection with LA66 USB for OTA update.
	237
	238
10.2	239	=== (% style="color:blue" %)Step5:(%%) Check result. ===
7.1	240
10.2	241
7.1	242	Below shows the update successul result.
	243
40.1	244	[[image:image-20250121093834-4.png]]
7.1	245
	246
14.1	247	= 4. FAQ =
7.1	248
50.1	249	== 4.1 OTA_Tool supports two upgrade methods for -LB products. ==
14.1	250
	251
54.1	252	(% style="color:red" %)Note: The premise of using OTA_Tool is that all your devices have bootloaders.
20.2	253
54.1	254	(% style="color:red" %)1. (%%)Only devices with bootloader can perform OTA upgrades(OTA upgrade method).
	255
	256	(% style="color:red" %)2.(%%) This is because the boot loader's address is (% style="color:blue" %)0x08000000(%%), the general functional firmware's address is (% style="color:blue" %)0x0800D000(%%), and burning the firmware through OTA_Tool will only write content to the address (% style="color:blue" %)0x0800D000(%%). So whether you use the OTA_Tool's OTA upgrade method or the UART upgrade method, you can only use it to download firmware without a bootloader, otherwise you will incorrectly place the bootloader at address (% style="color:blue" %)0x08000000(%%).
	257
	258	* For OTA_Tool, you can choose to use the (% style="color:blue" %)OTA upgrade method(%%), refer to the above upgrade steps in this user manual.
	259
50.1	260	[[image:image-20250122104151-4.png\|\|height="318" width="673"]]
20.2	261
50.1	262	* Of course, if you have a USB-TTL adapter, you can also choose to use the [[UART upgrade method>>https://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H3.2UpdateFirmware28Assumethedevicealreadyhaveabootloader29]] via OTA_Tool.
20.2	263
50.1	264	[[image:image-20250122104131-3.png\|\|height="330" width="674"]]
20.2	265
	266
19.1	267	== 4.2 Where to find OTA Password? ==
	268
20.2	269
19.1	270	Each device has a shipped label with OTA Password which is 16 chars. like below. If user don't find this, please send us a photo for the device with Dev EUI to [[support@dragino.com>>mailto:support@dragino.com]] . and we will search the password for you.
	271
	272	[[image:image-20230519102907-2.png\|\|height="286" width="580"]]
	273
	274
20.1	275	== 4.3 How about if i upgrade a crashed firmware via OTA update? ==
19.1	276
20.1	277
20.2	278	OTA update is done via Bootloader and only change the firmware partition. So update a crash firmware via OTA update won't destroy bootloader and user can use OTA method to update again.
20.1	279
20.2	280	(% style="color:red" %)Here are notice:
20.1	281
20.2	282	~1. OTA update frequency depend on the firmware frequency. If there is no frequency in the firmware. Bootloader will use EU868 as default frequency.
20.1	283
20.2	284	2. OTA update require a reset or reactivate action. If the crash firmware doesn't have them work, user need to manuall push the physic reset button on the PCB or power off/on device.
	285
	286
53.1	287	== 4.4 How to update the LA66 OTA Dongle V1.1 via mobile phone? ==
35.1	288
53.1	289
	290	[[image:image-20250122113225-5.png\|\|height="259" width="615"]]
	291
	292	* 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.
	293
43.1	294	[[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]].
	295
42.1	296	Tool Download: [[Download link form Dropbox.>>https://www.dropbox.com/scl/fo/gyscmfn1s03oz3n8rif8w/AJW7JoMQsQ56dtlls2SNf9c?rlkey=3q2cxwriyzh26vuairx01yebc&st=be5jv92w&dl=0]]
41.1	297
79.1	298	Operation instructions: [[Reference for operating procedures.>>\|\|anchor="H3.2.1LA66upgrade"]]
41.1	299
53.1	300	* If you have burned LA66 OTA DONGLE V1.0 for your LA66 according to previously existing instructions. Then you need to re-burn your LA66 boot loader first: [[LA66 USB LoRaWAN Adapter User Manual - DRAGINO>>url:https://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20USB%20LoRaWAN%20Adapter%20User%20Manual/#H1.10.2Updatemethod:A0ForLA66withoutbootloader]]
50.1	301
53.1	302	Please refer to FAQ 4.7 for detailed reasons.
50.1	303
53.1	304
41.1	305	== 4.5 Will OTA update effect the Local LoRaWAN Network. ==
	306
35.1	307	User can configure the OTA_Frequency.txt file to change the Update frequency point so it won't conflict with the general LoRa Frequency. See below for the file as reference and explain. The OTA update also use a none-use SF (SF=5) which won't conflict with the current use SF.
	308
	309	(% class="mark" %)#Define the OTA frequency use for OTA.
	310	#End Node has FRE1 and SF=5. So don't change FRE1 settings
	311	#FRE2 include several frequencies point.
	312	#PC first use FRE1 to create connection to end node, then use one of FRE2 frequencies to process downlink.
	313
	314	(% class="mark" %)#Format:
	315	#Frequency Band;FRE1;FRE2
	316	EU868;869.0;868.7,868.9
	317	IN865;866.9;865.1,865.3
	318	KZ865;866.5;866.1,866.3
	319	KR920;921.7;921.3,921.5
	320	MA869;870.5;870.7,870.9
	321	US915;923.1;923.7,924.1
	322	CN470;505.5;605.7,505.9
	323	AU915;923.7;924.7,925.5
	324	AS923;923.5;923.3,923.7
	325	AS923-2;921.2;921.8,922.0
	326	AS923-3;916.4;917.0,917.2
	327	AS923-4;917.1;917.6,917.8
	328	EU433;434.5;433.9,434.1
	329	RU864;869.3;869.5,869.7
	330
	331
50.1	332	== 4.6 The old version LA66 is different from the new version LA66. Can OTA_Tool be used for both versions? ==
	333
	334
	335	The most obvious hardware difference between LA66 V1 and LA66v2 when burning is the presence of a "RESET "button, and the RESET operation is only for LA66 without a boot loader, you can refer to this link to learn how to upgrade LA66 without a boot loader：[[LA66 USB LoRaWAN Adapter User Manual - DRAGINO>>url:https://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20USB%20LoRaWAN%20Adapter%20User%20Manual/#H1.10.2Updatemethod:A0ForLA66withoutbootloader]]
	336
52.1	337	[[image:image-20250122134752-6.png\|\|height="288" width="543"]]
	338
50.1	339	In summary, as long as your LA66 has a boot loader, either LA66 V1 or LA66 V2 can use OTA_Tool.
	340
	341
	342	== 4.7 Why can't LA66 burn its own working firmware after it is used for OTA upgrade of -LB products? ==
	343
	344
	345	We are sorry for the inadequacy of LA66 for OTA updates in the past.
	346
	347	* In the past, the download address of LA66 OTA DONGLE V1.0 was (% style="color:blue" %)0x08000000(%%), and the address of the bootloader that existed by default when the LA66 was shipped was also (% style="color:blue" %)0x08000000(%%).
	348
	349	Therefore, when you burn OTA_Firmwar v1.0 (LA66 OTA DONGLE v1.0) for the LA66 in order to use the LA66‘s ability to perform OTA upgrades for -LB products, the LA66’s bootloader is overridden.
	350
	351	So if you need to switch back to the LA66's working firmware, you'll need to refer to this [[link>>https://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20USB%20LoRaWAN%20Adapter%20User%20Manual/#H1.10.2Updatemethod:A0ForLA66withoutbootloader]] for instructions to burn firmware with a bootloader for the LA66.
	352
	353	[[image:image-20250122113225-5.png\|\|height="336" width="798"]]
	354
	355	* For the new version of LA66 OTA DONGLE V1.1, we have changed the supported download address to (% style="color:blue" %)0x0800D000(%%) the same as other working firmware addresses, so you can simply use OTA_Tool to burn LA66 OTA DONGLE V1.1 and LA66 working firmware for LA66.
	356
14.1	357	= 5. OTA Tool Known Bug: =
	358
	359
10.2	360	~1. If user click "(% style="color:blue" %)Start"(%%) but there is issue during update. User may need to close and open the tool again.
7.1	361
	362
28.1	363

Wiki source code of OTA Update Firmware/Configure for Sensors

Applications

Navigation