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Last modified by Mengting Qiu on 2025/06/17 09:18
From version 48.1
edited by Mengting Qiu
on 2025/01/22 10:41
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To version 54.1
edited by Mengting Qiu
on 2025/01/22 14:27
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126 126  
127 127  = 4. FAQ =
128 128  
129 -== 4.1 Can i use other devices to connect to PC if i don't have LA66 USB? ==
129 +== 4.1 OTA_Tool supports two upgrade methods for -LB products. ==
130 130  
131 131  
132 -If user doesn't have LA66 USB Adapter, they can still use other Dragino Device to connect to PC for OTA update.
132 +(% style="color:red" %)**Note: The premise of using OTA_Tool is that all your devices have bootloaders.**
133 133  
134 -(% style="color:blue" %)**Steps:**
134 +(% style="color:red" %)**1. **(%%)Only devices with bootloader can perform OTA upgrades(OTA upgrade method).
135 135  
136 -* Find the suitable mode which base on LA66 chip ( All LoRaWAN model with LB or LS suffix , such as SN50v3-LB)
136 +(% 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**(%%).
137 137  
138 -* Update the LA66 USB OTA firmware to the device.
138 +* 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.
139 139  
140 -* Connect the device to PC via UART interface.
140 +[[image:image-20250122104151-4.png||height="318" width="673"]]
141 141  
142 -* Make sure power off or update the firmware back to original firmware , because the LA66 USB OTA fimware is not low power consumption firmware. it will consume the battery very fast.
142 +* 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.
143 143  
144 +[[image:image-20250122104131-3.png||height="330" width="674"]]
145 +
146 +
144 144  == 4.2 Where to find OTA Password? ==
145 145  
146 146  
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161 161  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.
162 162  
163 163  
164 -== 4.4 How to update the LA66 OTA Dongle via mobile phone? ==
167 +== 4.4 How to update the LA66 OTA Dongle V1.1 via mobile phone? ==
165 165  
169 +
170 +[[image:image-20250122113225-5.png||height="259" width="615"]]
171 +
172 +* 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.
173 +
166 166  [[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]].
167 167  
168 168  Tool Download: [[Download link form Dropbox.>>https://www.dropbox.com/scl/fo/gyscmfn1s03oz3n8rif8w/AJW7JoMQsQ56dtlls2SNf9c?rlkey=3q2cxwriyzh26vuairx01yebc&st=be5jv92w&dl=0]] 
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169 169  
170 170  Operation instructions: [[Reference for operating procedures.>>https://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/#H3.1.3.3LA66upgrade]]
171 171  
180 +* 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]]
181 +
182 + Please refer to FAQ 4.7 for detailed reasons.
183 +
184 +
172 172  == 4.5 Will OTA update effect the Local LoRaWAN Network. ==
173 173  
174 174  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.
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196 196  RU864;869.3;869.5,869.7
197 197  
198 198  
212 +== 4.6 The old version LA66 is different from the new version LA66. Can OTA_Tool be used for both versions? ==
213 +
214 +
215 +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]]
216 +
217 +[[image:image-20250122134752-6.png||height="288" width="543"]]
218 +
219 +In summary, as long as your LA66 has a boot loader, either LA66 V1 or LA66 V2 can use OTA_Tool.
220 +
221 +
222 +== 4.7 Why can't LA66 burn its own working firmware after it is used for OTA upgrade of -LB products? ==
223 +
224 +
225 +We are sorry for the inadequacy of LA66 for OTA updates in the past.
226 +
227 +* 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**(%%).
228 +
229 +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.
230 +
231 +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.
232 +
233 +[[image:image-20250122113225-5.png||height="336" width="798"]]
234 +
235 +* 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.
236 +
199 199  = 5. OTA Tool Known Bug: =
200 200  
201 201  
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