I have only one and already tried re writing on different sd cards. No luck. Yellow and blue leds keep flashing simultaneously and red led burning steady.
Checked network and cables; all ok.
Both leds on PI Zero (next to ethernet cable) both on.
I just contacted Baikal. Hopefully they can help.
Damm sorry to hear that, i can imagine the frustration you can have.
One of mine start to get crazy , high hashrate (like 100Ghs) but unfortunatly shares rejected
and unreliable some minutes after restart.did you update the last software with nist5 / x11gost ?