Hello
You can download the firmware and the program that uploads it into the flash (from a windows PC) from the yongnuo own website:
http://www.hk .com/e-etaily.php?ID=384.
The instructions to do the upgrade are in page 19th of the user manual that comes with the flash and the text is:
«17.Firmware Upgrade
YN585EX is equipped with USB port. You can visit YONGNUO official website (
www.hkyongnuo.com) and download the latest update software and firmware to upgrade the speedlite.
(1) Connect the speedlite to the computer through USB-MINB connecting cable;
(2) Keep pressing and holding [MODE] button, and then press [ON/OFF] button to start and enter the upgrade interface;
(3) Open the update software from the computer and update the speedlite according to the reminder.»
Note: the usb port in the flash is a mini usb (not a micro usb like the ones in the smartphones), thus one as to find one.
Also it was kind of you to use the Portuguese word “obrigado” (thank you).
Obrigado for you too,