LIBUSB_ERROR_IO [-1]

[Huiso-Jeong]

Hi.

I was trying to use your rkflashkit for RK3568 chip board
I tried it on Ubuntu 22.04 LTS at the first time, however, it was failed to build with "/waf debian Node.py line 282 raises StopIteration"
error message.

SO, I downgraded my Ubuntu to 18.04 LTS and I succeeded to build rkflashkit.deb and install it.
But, the thing is I added PID for RK3568, which is 0x2207:0x350a, and it worked though LIBUSB_ERROR_IO [-1] error came up.
//
Found devices:
0x2207:0x350a
libusb: error [submit_bulk_transfer] submiturb failed error -1 errno=2
Traceback (most recent call last):
File "/usr/bin/rkflashkit", line 17, in
sys.exit(app.main(sys.argv[1:]))
File "/usr/share/rkflashkit/lib/rkflashkit/climain.py", line 99, in main
self.parse_and_execute(args)
File "/usr/share/rkflashkit/lib/rkflashkit/climain.py", line 106, in parse_and_execute
self.load_partitions()
File "/usr/share/rkflashkit/lib/rkflashkit/climain.py", line 157, in load_partitions
loaded_parts = op.load_partitions()
File "/usr/share/rkflashkit/lib/rkflashkit/rktalk.py", line 194, in load_partitions
self.__init_device()
File "/usr/share/rkflashkit/lib/rkflashkit/rktalk.py", line 154, in __init_device
prepare_cmd(0x80, 0x00060000, 0x00000000, 0x00000000))
File "/usr/share/rkflashkit/lib/rkflashkit/usb1.py", line 1145, in bulkWrite
return self._bulkTransfer(endpoint, data, sizeof(data), timeout)
File "/usr/share/rkflashkit/lib/rkflashkit/usb1.py", line 1129, in _bulkTransfer
raise libusb1.USBError(result)
rkflashkit.libusb1.USBError: LIBUSB_ERROR_IO [-1]
//

1. How can I solve this LIBUSB_ERROR_IO [-1] error?
2. Can you support RK3568 chip for rkflashkit?