Question about USB

[Xavier]

Don't touch JMP1 and 2 or you won't be able to switch on your preen.
Search for JMP1 here :
http://ixox.fr/preenfm2/built-it/the-pcb/

But you're very  close, just run the dfu command in a directory where you have the bin file.
Follow the download link at the top right of this page.
Download last 0.9o firmware, the bootloader is in the zip.

Xavier

[dimifrag]

i have the file in usb storage on root directory and on pfm2 folder directory, where i need to put the p2_boot_1.10.bin file to get the bootloader update?

[Xavier]

I was not clear.
The bootloader is useless on your usb drive.

It must be on your computer in the directory where you run dfu-util.

[dimifrag]

where is in my mac the dfu util?

[dimifrag]

i found it
On User directory

[dimifrag]

and what is the overclocked firmware? it's better than normal firmware?

[Xavier]

Cool.

From the FAQ 

Should i use the overclocked firmware ?

Yes.
I've never seen any problem with it, and you'll get a better sound specially when playing high notes. Sampling rate is 44000 instead of 39000Hz.
I don't feel comfortable flashing it by default because the STM32F4 is not supposed to run at 192MGhz.

[dimifrag]

thanks xavier you are good

[Xavier]

The more people upgrade their bootloader to 1.10 the less i'll hear about dfu-util problem