dev_blind is a very simple dev_flash mounter which allows you to write directly to dev_flash through the /dev_blind directory (via FTP servers, PS3 file managers, or any other method)
GPL Source Code: dev_blind in Simple Small Tools - git-hacks.com
To developers: the source code is easy to implement in your homebrew programs - check it out!
Alternative Download: http://jjolano.dashhacks.com
Warning: dev_flash is a critical component of the PS3 system. Do not modify a file if you don't know what it's for. You may brick your console!