[Solved] PFM3 blackout after update

[gianandrea]

Hello there
I tried to flash the 1.09 firmware via DFU mode and my PFM doesn't boot up anymore, both with the 9V and the 5V USB power supply.
Frightened by this mess, I've reloaded from scratch the 1.07 firmware but it persists in not booting up.
When power is connected there's light in the enclosure, this makes me think I haven't fried up anything important.

What have I made up to scrumble the things like this? Is it something I can fix on my own? If yes: how?

Thank you!

[Xavier]

Hi,

Can you enter the bootloader ? (Press MENU while powering on your preen).

1. If Not : You likely flash the firmware over the bootloader. So your pfm3 cannot boot at all.
You have to reflash the Bootloader AND the firmware. Using DFU method.
https://github.com/Ixox/preenfm3/wiki/Upgrade-firmware-(Flash-bootloader)

2. If yes : use the bootloader (or another DFU method) to flash the firmware.
Double check the adress where the bootloader and firmware must be flashed on the MCU (respectively 0x8000000 and 0x8020000).

[gianandrea]

Did it!
Thank you very much for the support!