Pimax 8k black screen with power red and blue ambient lights on

I installed Pimax 8k on my notebook.
Pitool flashed the newest firmware version. Then
Pimax 8k stuck on black screen with solid power red and blue ambient lights on.
The device is visible by Pitool, win10 device manager shows only 1 monitor.
I tried to downgrade with dfu & P2.1.255.181 firmware (it brings up second monitor) but after flashing Pitool automaticaly restored 8k to the latest firmware version.

I solve the problem by bying two more microDP-DP adapters for my laptop