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Last modified by Mengting Qiu on 2025/07/29 15:24
From version 49.13
edited by Mengting Qiu
on 2025/07/29 14:18
Change comment: There is no comment for this version
To version 49.1
edited by Mengting Qiu
on 2025/07/29 13:42
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 For certificate coverage of the -NB/-NS model ====
326 326  
327 +For the -NB/-NS models, there is no AT command available to clear configured certificates. Therefore, if users do not wish to use the pre-configured certificates, they only need to follow the instructions above and use the AT+CACERT, AT+CLICERT, and AT+CLIKEY commands to assign custom meaningless characters to the device. This will overwrite the original certificates.
327 327  
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 -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 -1. **[[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"]]**
337 -
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 -
342 -AT+CACERT=123456}
343 -
344 -AT+CLICERT=123456}
345 -
346 -AT+CLIKEY=123456}
347 -
348 -2. Upload Valid Certificates (Optional):
349 -
350 -After overwriting, users may proceed to upload new valid certificates if needed.
351 -
352 -
353 353  == 4.2  For -CB /-CS model ==
354 354  
355 355  === 4.2.1 Upgrade the firmware to configure TLS firmware to set the certificate ===