LOL at the suggestion that my app could brick a console. Try not to make stuff up when posting, especially when you don't know what you're talking about.
I have a PS3, I've even posted a small library for it already and a few other apps. I simply don't have access to mine until Monday. Don't make baseless assumptions.
After I get confirmation that at least the mounting works I'll release an update that mounts dev_flash 2 && 3 right away, it would be extremely simple to do so.
I'm not sure why it's not working for you, but I know that with at least syscall35 there is no problem in mapping dev_flash, I've tested simply mounting usb003\cfw\dev_flash to dev_flash and it worked perfectly. Are you referring to using syscall8 to mount dev_Flash?
It IS very simple. There's no reason that at least the mounting part shouldn't work.