I have a MC7455 with AUTO-SIM feature not working. Check the modem with the AT!IMPREF? and found that it only had one Firmware and Carrier PRI Cached on it (as shown below) AT!IMAGE? TYPE SLOT STATUS LRU FAILURES UNIQUE_ID BUILD_ID FW 1 GOOD 1 0 0 ?? 02.33.03.00? FW 2 …

yes. i think you need to manually switching the IMPREF

Do these help? [image] Auto switching of the firmware based on the SIM operator IoT Modules @akn So I have attached an example of switching to a different firmware image manually EM7565 multi image update and image switch.txt (12.0 KB) , its for an EM7565 but the princip…

Thanks for the information. The manual firmware switching using the AT command (AT!IMPREF=“FIRMWARE”) works. However, the auto firmware switching does not work. As the AUTO-SIM is the preference, is there any way we can add the MCC/MNC pair combinations to the modem? Is manually switching the f…

if the MCC/MNC combination is not identified, you can use the SDK or AT command to switch PRI

Hi @jyijyi , can you please provide some information on the following: From the link of the topic your shared, it says that auto SIM switching works when it is faced with known MCC/MNC. Is there any way we can manually update this known MCC/MNC combination on the modem? thanks,

no, i don’t see there is any way to do this manually You might need to monitor the ICCID and MCC/MNC on host side

Hi Jyijyi, Thanks for the information on manual update of MCC/MNC. Just wondering whether the EOL of MC7455 has an impact on the AUTO-SIM functionality?

For EOL, probably there will not be any update of FW

Hi Jyijyi, Thanks for the following information that you have provided me through our conversation, correct me if i am wrong: the issue that i am facing is due to my SIM’s MCC/MNC combination being new and not available in the carrier firmware images. This means the auto SIM will not work with th…

Thanks for confirming this and helping me out out on the issue.

Mc7455 auto-sim issue

IoT Modules MC/EM Series

jyijyi April 4, 2024, 9:47am 2

Do these help?

Topic		Replies	Views
MC7455 Auto-SIM function issue MC/EM Series	3	2736	April 27, 2019
Auto switching of the firmware based on the SIM operator IoT Modules	1	775	August 25, 2020
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Mc7455 auto-sim issue

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