Modify dfu-util For Ubuntu 14.04

#Inside your home directory, download dfu-util 
git clone git://git.openezx.org/dfu-util.git 
open dfu-util/src/dfu_load.c 
add this instruction "milli_sleep(200);" under line 134 
cd dfu-util 
./autogen.sh 
./configure 
make 
The resulting binary is dfu-util/src/dfu-util. 

Source

http://bitcoin.it/

See Also on BitcoinWiki