How can I flash ClockworkMod with Heimdall on Galaxy Mini?

I tried to flash ClockworkMod with Heimdall on my Galaxy Mini by doing the following:

• I go into download mode


• Plug in my phone


• Go into the recovery image folder


• Run heimdall flash --kernel zImage

I get this error and my phone stays in download mode:

Initialising connection...
Detecting device...
Claiming interface...
Attempt failed. Detaching driver...
Claiming interface again...
Setting up interface...
ERROR: Setting up interface failed!
Re-attaching kernel driver...

USB debugging mode is enabled of course and I'm on Ubuntu. How can I successfully flash ClockworkMod?

Answer

I just a got an email from the Heimdall dev, he said it's not compatible with the Galaxy Mini. Thanks guys for your replies.