Kano doesn't boot / under voltage detected

Hello,

I’ve performed Kano upgrade with sudo apt-upgrade. The process finalized.
After when I try to boot Kano, I shortly see the Kano logo, then I get a black screen and nothing happens. Is there a way to start in a safe or recovery mode or fix the upgrade?

Then after a while, sometimes (not sure if related), the message under-voltage detected is displayed.
The kit is pluged to power via phone charger. Not sure if this causes the black screen…

Thanks for you help
Regards
Samuel

The guide here says to hold shift at startup to access recovery:

Hello,

Thanks for your answer.

I was not able to reinstall Kano since no PC was available to flash the SD.

Instead I’ve used NOOBS Lite and then installed Rasbian over the network, the process is very easy. The result is in my opinion even better than what I had before: My Kano box is now a little Linux computer more fitting the needs of my in between grown up kids :slight_smile:

Regards
Samuel