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We have many RUT230 and I tried to update three of those for RUT2_R_00.07.01.2. It seems that they stop working (they do not connect to the internet) because of the ???? issue. Sometimes, if I set APN manually, they may connect to the internet but if I reboot the device they lose the connection and I can't connect them anymore. The operator is Elisa (Finland).

I found the following from the gsm.log

AT+QGMR:    ERROR
AT+QCAINFO:    ERROR
AT+QMBNCFG="list":    ERROR

The modem inside is Quectel UC20.
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It seems that I don't have that same issue with RUT240 (Quectel EC25) and Elisa (Finnish operator).

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Hello,

Than you for your query.

From the information provided it is hard to determine what could cause these issues.

Could you please download the troubleshoot file and forward it to me (via a private message)? To download the troubleshoot file please navigate to System -> Administration -> Troubleshoot -> Download Troubleshoot

More information on where to find it: https://wiki.teltonika-networks.com/view/RUT230_Administration#Troubleshoot_2

Best Regards,

Dziugas K.