Blue led blinking, green fixed on

Rockpi 4c Just delivered …
Therer isn’t a page where are explained led signals!!! I need to know what are the signal talks!! I have green fixed led and blue blinking … obviously no boot!!!

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I believe you don’t have a proper image in the micro sd slot. I don’t believe booting from a USB is supported yet. Lastly, the onboard emmc might be set to do something funky. The last is a last resort and would require a lot of troubleshooting.

Thanks is solved.

How did you solve this? I have the same. Nothing I found on internet is working (maskrom mode/micro sd) nothing is changing. When in maskrom I cant get out of maskrom and when I use updgarde firmware option it resets the device and blue lights again and no boot…

Same problem here…

When I write flash freshly then it starts – blue blinks, green is continuous. No boot, nothing on console.

For me, same thing after upgrading (sudo apt-get upgrade) official debian 10 image - there was some errors with not signed (radxa?) packages.
After reflash sd card with original image it works again.