Thingy:91 nRF9160 firmware 1.1.1 update

I had updated Thingy:91 nRF9160 firmware to 1.1.1 using nRF Desktop Programmer. I used the "Cellular Modem" button and attached the new file mfw_nrf9160_1.1.1.zip

However, after the update finished successfully and restarting the device,  the modem doesn't work, LEDs not working and all AT commands time outs.

Does that mean I broke the firmware, if so how to solve that?

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