I use the MKR 1500 and the SARA R410M-02B-01 without an external antenna. I recently updated via putty/SerialSARAPassthrough to version L0.0.00.00.05.08,A.02.04, however the update to L0.0.00.00.05.11,A.02.16 failed in stg1 with all three different delta packages.
Im trying to connect to my operator Deutsche Telekom (no external antenna installed).
The getICCID and getIMEI sketches work and return the respective strings.
However the NBScanNetworks just signals it is but than doesnt return anything.
These are the returns I get from the AT commands:
| AT command | return | meaning |
|---|---|---|
| AT+COPS=? | CME Error Operation not allowed | modem is in a state which does not allow performing the entered command (p. 41) |
| AT+COPS? | 0 | default, automatic network detection |
| AT+CFUN? | 1 | fully active |
| AT+CEREG? | 0,2 | URC disabled, Modem is searching for networks |
| AT+CPIN? | Ready | there is no PIN |
| AT+UMNOPROF? | 31 | Deutsche Telekom |
| AT+CSQ | 99,99 | not known, or not detectable |
| AT+URAT? | 8,7 | NB-IoT is primary, M1 is secondary |
| AT+UTEMP? | Error | |
| AT+UANTR=? | 0 | default, cellular |
| AT+UBANDMASK? | 0,524420,1,524420 | Telekom profile |
Some people found that there were mistakes in the modem libraries that could result in the modem stuck in an unrecoverable state. It seem they were addressed at some point.
( Library use of POWER_ON and RESET_N · Issue #47 · arduino-libraries/MKRNB · GitHub )
Has anyone any ideas on what might cause the problem?
What can I check to verify that modem is fully functional?
