IX2 200 no boot log (3 replies)

Hi, I have 2 Lenovo Iomega ix2 200 and they both don't work. One of them blinks only the white LED, the other one blinks white and red LED.
I use a FT232 USB to connect - JP1 = 1st empty, 2nd txd, 3rd gnd, 4th rxd.

I tried to connect via gtkterm using the correct settings but no luck with both, no response
I tried using Lenovo Imager tool in order to build a USB to reinstall the system but no luck (used different usb 2.0 and 3.0 on the 3 ports)
Followed this video https://www.youtube.com/watch?v=72Re1-JaHgQ but didn't install from USB
Followed this guide https://github.com/vanaware/openwrt/releases/tag/v17.01.4-iomega_ix2_200-v1 but got stuck at setenv bootcmd 'setenv bootargs console=ttyS0,115200n8 root=/dev/sda1; usb start; ext2load usb 0:1 0x00800000 /uImage; bootm 0x00800000'
run bootcmd - the termail reporterd that couldn't start "run" command
Followed this guide https://github.com/artizirk/ix2-200 but at step 5 got stuck because of no response of gtkterm
Changed 2032 battery

Is there any way I could restore my NASs?

Thanks in advance and forgive me for my poor english writing