nrf9151-laca-r7 - modem does not start

Hi,

I have an issue with nrf9151 modem not starting, giving -116 error.

The board is configured as:

nRF Connect SDK v3.0.1

Toolchain v3.0.2

board target: nrf9151dk/nrf9151/ns

I programmed the modem firmware mfw_nrf91x1_2.0.2.zip and it programmed successfully. 

To eliminate that the issue is not from our custom firmware, I programmed serial_lte_modem sample application.

From RTT, it shows -116 error.

Do you know what would cause this?

I tried to reheat the nrf chip but did not make any difference.

I measured DEC0 to be 2.2V. What voltage should it read?

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