openFPGAloader successfully built, but can't flash with ftdi error

Good Day, List!

This mail is call for help, advice and to stir interest.

While playing with open source workflow for FPGA chips
I found with pleasure that not only GoWin FPGAs supported by open
source tools, but also all needed tools easily built on OpenBSD
(working on ports now). yosys, project apycula, nextpnr-gowin,
openFPGAloader all successfully build.

But I can't flash "compiled" bitstream to hardware device with
openFPGAloader.

Here is description of problem:

After building software and attaching HW I can successfully scan usb

found 10 USB device
Bus device vid:pid probe type manufacturer serial product
000 001 0x0000:0x0000 xvc-client Generic none xHCI root hub
001 001 0x0000:0x0000 xvc-client Generic none xHCI root hub
001 005 0x0403:0x6010 FTDI2232 SIPEED FactoryAIOT Pro JTAG Debugger

but cant detect or flash bitstream with next error

doas openFPGALoader -b tangnano9k pack.fs --verbose-level=3
try to open 403 6010 0 0
iProduct : JTAG Debugger
8
b
8
b
fail to read data usb bulk read failed
JTAG init failed with: low level FTDI init failed


here dmesg

uftdi0 at uhub3 port 3 configuration 1 interface 0 "SIPEED JTAG
Debugger" rev 2.00/5.00 addr 5 ucom0 at uftdi0 portno 1
uftdi1 at uhub3 port 3 configuration 1 interface 1 "SIPEED JTAG
Debugger" rev 2.00/5.00 addr 5 ucom1 at uftdi1 portno 2

and also usbdevs outputs

addr 05: 0403:6010 SIPEED, JTAG Debugger
full speed, power 90 mA, config 1, rev 5.00, iSerial FactoryAIOT Pro
driver: uftdi0
driver: uftdi1


I also posted issue to original github
https://github.com/trabucayre/openFPGALoader/issues/382

Any tips and tricks on how to debug it? Any interest in helping?

--
Nerfur Dragon
-==(UDIC)==-