varundbest :
Thanks, btw do you think i should mount it on a pen drive? That pen drive already have windows 7 in it so i dont know what will it boot, lol!
I used Universal USB Installer to "burn" the iso to a USB stick and boot from that.
Choose something like "unknown or custom Linux" when you create the bootable stick, but be aware that the current content of the stick is deleted.
I changed the SATA mode from RAID to AHCI and booted from the stick to let the updater find both disk and update them.
I think there was an error or warning message that something didn't succeed but on the next run the updater showed the new firmware version, so all was good.
Changed back from AHCI to RAID and was up and running again. I think inbetween there was a message to power off the machine, not only soft rebooting. Just follow those messages for safety.