One of my Xilinx U250 accelerator cards is stuck when I try to flash it 
and breaks with the following message:

1

ERROR: SC is not ready: 0x0(NOT READY)

2

ERROR: SC is not ready: 0x0(NOT READY)

3

         Status: SC needs updating

4

         Current SC: UNKNOWN

5

         SC to be flashed: 4.6.11

6

Are you sure you wish to proceed? [y/n]: y

7

ERROR: SC is not ready: 0x0(NOT READY)

8

Updating SC firmware on card[0000:37:00.0]

9

Stopping user function...

10

...............................................

11

ERROR: Failed to update SC firmware, err=-1

12

ERROR: Please refer to dmesg for more details

13

WARNING: Failed to update SC firmware on card [0000:37:00.0]

14

No cards were flashed.

15

WARNING:1 Card(s) not flashed.

In **dmesg** I get the following warning "check_pcie_link_toggle: PCI 
link toggle was detected" and "xmc.m.19922944 ffff8be17766d810 
is_sc_ready: SC is not ready, state=0". Comparing the **lspci** output 
(lspci -vd 10ee: -vvv) shows:

*"Control: I/O-"* (on the card that breaks) vs. *"Control: I/O+"* 
(working card).

Maybe I can use **setpci** to set the mentioned bit? As I am new to the 
fpga field and do not have experience with it, unfortunately I am stuck 
with this.

Does anyone have experience with the mentioned card? My environment is 
GNU/Linux Ubuntu 18.04 LTS with Xilinx tools version 2021.1

thanks