gd32-dfu-utils not working on my board

Just bought 2 from the official taobao store. I have tried both compiling gd32-dfu-utils on macOS and Linux, and the one came with platformio on Linux, but with no success. The only thing working for me is the GigaDevice DFU tool on windows.

The output of dfu-tool -l:

dfu-util 0.9

Copyright 2005-2009 Weston Schmidt, Harald Welte and OpenMoko Inc.
Copyright 2010-2016 Tormod Volden and Stefan Schmidt
This program is Free Software and has ABSOLUTELY NO WARRANTY
Please report bugs to http://sourceforge.net/p/dfu-util/tickets/

Found DFU: [28e9:0189] ver=0100, devnum=7, cfg=1, intf=0, path="20-3", alt=0, name="@Internal Flash  /0x08000000/128*001Kg", serial="3CBJ"

The output of dfu-util -alt 0 -s 0x08000000:leave -D ./firmware.bin:

dfu-util 0.9

Copyright 2005-2009 Weston Schmidt, Harald Welte and OpenMoko Inc.
Copyright 2010-2016 Tormod Volden and Stefan Schmidt
This program is Free Software and has ABSOLUTELY NO WARRANTY
Please report bugs to http://sourceforge.net/p/dfu-util/tickets/

dfu-util: Invalid DFU suffix signature
dfu-util: A valid DFU suffix will be required in a future dfu-util release!!!
Opening DFU capable USB device...
ID 28e9:0189
Run-time device DFU version 011a
Claiming USB DFU Interface...
Setting Alternate Setting #0 ...
Determining device status: state = dfuIDLE, status = 0
dfuIDLE, continuing
DFU mode device DFU version 011a
Device returned transfer size 2048
GD32 flash memory access detected
Device model: GD32VF103CB
Memory segment (0x08000000 - 0801ffff)(rew)
Erase size 1024, page count 128
Downloading to address = 0x08000000, size = 6584
Download	[=========================] 100%         6584 bytes
Download done.
File downloaded successfully
dfu-util: Error during download get_status

The download was actually not successful.

I have also opened an issue at https://github.com/riscv-mcu/gd32-dfu-utils/issues/4.