Quote from elmor on 2020-09-09, 15:21

Ah great you got it working. Sorry I missed the forum notifications. Fastest way to get support is through discord at the moment 🙂

Quote from I.nfraR.ed on 2020-11-30, 00:26

Hello,

I've promised to get the linux flashing instructions really long time ago. I've recently recovered my profile on the forums, so here's what you need to flash the firmware from a linux machine. Not sure why anyone would want that at the moment, but perhaps there are people using linux as a daily OS and want to quickly flash a new firmware on EVC2.

Firs of all, move the jumper to the BOOT position (2-3) and connect the cable.

Then, you need dfu-util

$ sudo apt install dfu-util

After successful install, you can verify the util sees the device by typing

$ sudo dfu-util -l
dfu-util 0.9

Copyright 2005-2009 Weston Schmidt, Harald Welte and OpenMoko Inc.
Copyright 2010-2020 Tormod Volden and Stefan Schmidt
This program is Free Software and has ABSOLUTELY NO WARRANTY
Please report bugs to http://sourceforge.net/p/dfu-util/tickets/

Found DFU: [0483:df11] ver=2200, devnum=4, cfg=1, intf=0, path="1-7", alt=1, name="@Option Bytes /0x1FFFF800/01*016 e", serial="FFFFFFFEFFFF"
Found DFU: [0483:df11] ver=2200, devnum=4, cfg=1, intf=0, path="1-7", alt=0, name="@Internal Flash /0x08000000/064*0002Kg", serial="FFFFFFFEFFFF"

The device we're looking for is the Internal Flash (alt=0).

It's always good to make a backup first

sudo dfu-util -a 0 -U backup.dfu

Finally, flash the new firmware (replace firmware name with the one you're flashing)

sudo dfu-util -a 0 -D EVC2_0008c.dfu

Disconnect the USB cable, move the jumper to position (1-2) and reconnect the cable.

Quote from elmor on 2021-08-28, 07:10

Quote from miramiles on 2021-08-28, 01:58

I also have the same case.

Hello, which one are you referring to?

Quote from Marco Belmonte on 2023-02-16, 23:21

I'm pretty sure I've bricked my EVC2SX-03 (STM32F072C) - I think I got mixed up with the whole DFU and then non-DFU bootloader and at one point had both STM programs installed ... Then in trying to fix it choose one of the options "erase everything" and now I'm at a point where the only time my EVC is recognized by Windows 11 is when it is in bootloader mode.  When I switch the jumper back and try and access it in EVC mode I just get this in device manager:  "Unknown USB Device (Port Reset Failed)"

Anyway to unbrick myself?

 

Quote from Marco Belmonte on 2023-02-16, 23:34

I mean look at this:

07:31:02 : USB speed : Full Speed (12MBit/s)
07:31:02 : Manuf. ID : STMicroelectronics
07:31:02 : Product ID : STM32 BOOTLOADER
07:31:02 : SN : FFFFFFFEFFFF
07:31:02 : DFU protocol: 1.1
07:31:02 : Board : --
07:31:02 : IAP
07:31:02 : UPLOADING ...
07:31:02 : Size : 1024 Bytes
07:31:02 : Address : 0x8000000
07:31:02 : Read progress:
07:31:02 : Data read successfully
07:31:02 : Time elapsed during the read operation is: 00:00:00.481

I don't even have a serial # anymore lol! Let me know if I should just order a new EVC?

Quote from elmor on 2023-05-10, 10:53

Quote from Marco Belmonte on 2023-02-16, 23:34

I mean look at this:

07:31:02 : USB speed : Full Speed (12MBit/s)
07:31:02 : Manuf. ID : STMicroelectronics
07:31:02 : Product ID : STM32 BOOTLOADER
07:31:02 : SN : FFFFFFFEFFFF
07:31:02 : DFU protocol: 1.1
07:31:02 : Board : --
07:31:02 : IAP
07:31:02 : UPLOADING ...
07:31:02 : Size : 1024 Bytes
07:31:02 : Address : 0x8000000
07:31:02 : Read progress:
07:31:02 : Data read successfully
07:31:02 : Time elapsed during the read operation is: 00:00:00.481

I don't even have a serial # anymore lol! Let me know if I should just order a new EVC?

Hi Marco, sorry I missed this. Let me know if it's still an issue. It should be no problem to recover your device. The SN is not programmed in the bootloader so it's not an issue.

Quote from pixelwash on 2023-06-20, 05:05

Trying to make sure I'm running the latest firmware on an EVC2SX I just bought from you, following the instructions, all is good until Windows 10 connects to the device with the jumper set, and it is listed as STM32 BOOTLOADER.

The instructions you shipped read:

"b. If it is listed as “STM32 BOOTLOADER”, the driver needs to be changed (Driver folder)"

Tried changing the driver in the Windows Device manager, but to what? I see no "Driver folder" in either the software download, or the download for the new firmware....

Please help. I see you refer to a "Discord server" discussion in earlier answers, but I cannot find the link to the discord server either in the Forum here anywhere either.

Quote from Rolf K. on 2023-07-23, 22:55

in the download

EVC2_L4_FW_0009b.zip

is the driver folder. direct the dev.manager to that folder.

edit:

but if you are using STM32CubeProgrammer 

the correct driver is installed and shows "STM32 BOOTLOADER" again, it works.

Quote from Jonathan Kurz on 2023-10-29, 00:06

So Im having the same issue as the guy above. When I point the STM32 bootloader into the driver folder, it says correct driver installed.

 

When I unplug move the jumper the EVC show as a microelectronics device.

Any suggestion? Im just lost!