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Last modified by Mengting Qiu on 2025/07/29 15:24
From version 49.15
edited by Mengting Qiu
on 2025/07/29 14:24
Change comment: There is no comment for this version
To version 49.3
edited by Mengting Qiu
on 2025/07/29 13:58
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 ====
325 +==== 4.1.2.5 Overwriting Certificates on -NB/-NS Models ====
326 326  
327 327  
328 328  The -NB/-NS modules (BC660K) do not support clearing certificates via AT commands or firmware updates.
329 329  
330 -To effectively remove existing certificates or test certificate upload functionality, users may overwrite them with dummy data.
331 -
332 -
333 333  To effectively "clear" existing certificates, users may overwrite them with arbitrary data by following these steps:
334 334  
335 -**Scenario A:** Clearing Existing Certificates
332 +1. Overwrite Certificates:
336 336  
337 -1.Flash the certificate-provisioning firmware: **[[Set up TLS certificate - Dropbox>>https://www.dropbox.com/scl/fo/1ykfsesmr3702tj3kp663/AOOyH1GiVEOGR41gASuiDk0?rlkey=1q7a1b5yvjgt87d16w8tt0cum&st=vdy765ut&dl=0||data-sider-select-id="830d1b64-cb24-48b3-91e4-49da5c3f0783"]]**
338 338  
339 -2. Use the standard AT commands (AT+CACERT, AT+CLICERT, AT+CLIKEY) to write non-certificate data (e.g., random strings like 123456).
340 -Example:
341 341  
342 -AT+CACERT=123456}
343 343  
344 -AT+CLICERT=123456}
345 -
346 -AT+CLIKEY=123456}
347 -
348 -
349 -**Scenario B:** Testing Certificate Upload Functionality
350 -
351 -If users want to test whether certificate writing works (without having valid certificates yet):
352 -
353 -~1. Follow the same steps as above.
354 -
355 -2. Check for success responses after each command:
356 -
357 -
358 -
359 -2. Upload Valid Certificates (Optional):
360 -
361 -After overwriting, users may proceed to upload new valid certificates if needed.
362 -
363 -
364 364  == 4.2  For -CB /-CS model ==
365 365  
366 366  === 4.2.1 Upgrade the firmware to configure TLS firmware to set the certificate ===