Device broken?

[Lueffe]

Hi all,
I've 5 THB1 devices.
3 devices are flashed correctly.
with 2 devices I interupt the flash process. When I want to flash them I get an write time out error:

python rdwr_phy62x2.py -p COM8 -e -r wh ./bin/BOOT_THB1_v16.hex
=========================================================
PHY62x2 Utility version 11.03.24
---------------------------------------------------------
Connecting...
Traceback (most recent call last):
  File "D:\tmp\THB2\rdwr_phy62x2.py", line 738, in <module>
    main()
  File "D:\tmp\THB2\rdwr_phy62x2.py", line 575, in main
    if not phy.Connect(args.baud):
  File "D:\tmp\THB2\rdwr_phy62x2.py", line 234, in Connect
    sent = self._port.write(pkt.encode());
  File "D:\Python\Python310\lib\site-packages\serial\serialwin32.py", line 325, in write
    raise SerialTimeoutException('Write timeout')
serial.serialutil.SerialTimeoutException: Write timeout

Are the devices damaged or how can I flash them?