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Last modified by Mengting Qiu on 2025/07/29 15:24
From version 49.11
edited by Mengting Qiu
on 2025/07/29 14:16
Change comment: There is no comment for this version
To version 47.1
edited by Mengting Qiu
on 2025/05/20 15:54
Change comment: There is no comment for this version

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322 322  After completing the certificate configuration, Burn the [[bootloader>>https://www.dropbox.com/sh/u0uzvvnn58yrie4/AAAvvF_KRveNgmDejzp23ziLa/NB-IoT/Bootloader?dl=0&subfolder_nav_tracking=1]] firmware first, then re-burn the original working [[firmware>>https://www.dropbox.com/sh/u0uzvvnn58yrie4/AACREHllkTe0rATD4ZOqddyga/NB-IoT?dl=0]].
323 323  
324 324  
325 -==== 4.1.2.5 Certificate Management for -NB/-NS Models ====
326 -
327 -
328 -The -NB/-NS modules (BC660K) do not support clearing certificates via AT commands or firmware updates.
329 -
330 -To effectively remove existing certificates or test certificate upload functionality, users may overwrite them with dummy data.
331 -
332 -To effectively "clear" existing certificates, users may overwrite them with arbitrary data by following these steps:
333 -
334 -**Scenario A:** Clearing Existing Certificates
335 -
336 -If users want to remove old certificates:
337 -
338 -~1. Connect to the module via serial/USB and open a terminal (e.g., PuTTY, Tera Term).
339 -
340 -
341 -
342 -Use the standard AT commands (AT+CACERT, AT+CLICERT, AT+CLIKEY) to write non-certificate data (e.g., random strings like 123456).
343 -Example:
344 -
345 -AT+CACERT=123456}
346 -
347 -AT+CLICERT=123456}
348 -
349 -AT+CLIKEY=123456}
350 -
351 -2. Upload Valid Certificates (Optional):
352 -
353 -After overwriting, users may proceed to upload new valid certificates if needed.
354 -
355 -
356 356  == 4.2  For -CB /-CS model ==
357 357  
358 358  === 4.2.1 Upgrade the firmware to configure TLS firmware to set the certificate ===
... ... @@ -368,6 +368,8 @@
368 368  
369 369  Methods to Update Firmware:
370 370  
340 +* (Recommended way) OTA firmware update via BLE: [[**Instruction**>>url:http://wiki.dragino.com/xwiki/bin/view/Main/BLE_Firmware_Update_NB_Sensors_BC660K-GL/]].
341 +
371 371  * Update through UART TTL interface : **[[Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART_Access_for_NB_ST_BC660K-GL/#H4.2UpdateFirmware28Assumethedevicealreadyhaveabootloader29]]**.
372 372  
373 373  === 4.2.2 Configure certificate ===