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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 51.1
edited by Mengting Qiu
on 2025/07/29 14:57
Change comment: Uploaded new attachment "1753772253801-330.png", version {1}

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329 329  
330 330  To effectively remove existing certificates or test certificate upload functionality, users may overwrite them with dummy data.
331 331  
332 +
332 332  To effectively "clear" existing certificates, users may overwrite them with arbitrary data by following these steps:
333 333  
334 334  **Scenario A:** Clearing Existing Certificates
335 335  
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 +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"]]**
337 337  
338 -
339 339  2. Use the standard AT commands (AT+CACERT, AT+CLICERT, AT+CLIKEY) to write non-certificate data (e.g., random strings like 123456).
340 340  Example:
341 341  
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345 345  
346 346  AT+CLIKEY=123456}
347 347  
348 -2. Upload Valid Certificates (Optional):
349 349  
350 -After overwriting, users may proceed to upload new valid certificates if needed.
349 +**Scenario B:** Testing Certificate Upload Functionality
351 351  
351 +If users want to test whether certificate writing works (without having valid certificates yet):
352 352  
353 +~1. Follow the same steps as above.
354 +
355 +2. Check for success responses after each command:
356 +
357 +* Expected output:
358 +
359 +
360 +
361 +* If you get ERROR, retry or check module connectivity.
362 +
363 +3. Later, when you have real certificates, overwrite the dummy data with actual certificates.
364 +
365 +
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 ===
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