I prepared the card according the manual: https://doc.turris.cz/doc/en/howto/mox_microsd_card
I formatted and inserted a sd card into MOX module A. The red led starts blinking after 25s.
I also tried the reset modes with same result: https://doc.turris.cz/doc/en/howto/mox_rescue_modes
I did not find any information about the meaning of red led blinking.
Do you have any idea what’s going on?