Hi All,

I have just bought a nanoPi M4 V2.
I followed the Wiki instruction to how to make a mSD card for it.
I prepared a mSD card with Lubuntu image (from "rk3399-typec-lubuntu-desktop-xenial-4.4-armhf-20201027.zip")
I inserted into the slot and power on the Pi.
It booted smoothly, but after 20 seconds from the graphical Lubuntu desktop appeared on the monitor it is totally frozen.
I switch off the power, waited few seconds and on it again.

From that moment the Pi has not booted.
If I switch on the power only the red LED blinks very quickly - nothing more happens....

Of course I have checked the mSD card in my laptop - as is needed (with two ext4 partitions: rootfs & userdata)

What does the red LED blinking mean?
Somebody does have any idea what do I have to do to boot my Pi (again)?

Thank you in advance,
SziroG