I use WP7607-1 and MangOH Red. Firmware R9 / Legato 18.05.1.
When I disconnect the LTE antennas (MAIN CN301) the system reboot in infinite loop.
I have only a avcController installed (no applications).
If I reconnect the infinite loop stop.
Any idea ? I will publish the log next week the board is in test for the moment.