Bricked device - need help

Dear support,
please help mi with an issue. I got Otii Arc which is discovered under windows in device manager as: “Arc Firmware Upgrade Port”. But Otti 3.5.2 do not recognize it. I have found some topics on this forum and I was managed to flash the firmware by command:

bossac -p COM45 -i -e -w -v -b -R -U -u firmware/Arc_3.1.2.bin
Device       : ATSAM3X8
Version      : v1.1 Dec 15 2010 19:25:04
Address      : 0x80000
Pages        : 2048
Page Size    : 256 bytes
Total Size   : 512KB
Planes       : 2
Lock Regions : 32
Locked       : none
Security     : false
Boot Flash   : false
Unlock all regions
Erase flash

Done in 0.034 seconds
Write 88452 bytes to flash (346 pages)
[==============================] 100% (346/346 pages)
Done in 32.257 seconds
Verify 88452 bytes of flash
[==============================] 100% (346/346 pages)
Verify successful
Done in 21.555 seconds
Set boot flash true

But after that it dissapears from device manager and I cannot see it.
Only presing back button allows me to get to previous state “Arc Firmware Upgrade Port”
but is not usable at this point.

Could you please advice me what I can do ?
Thanks in advance
Daniel

Hi,

This problem has been sorted out via support.
Using bossac command to flash Arc with firmware for Otii 3 in this way is not possible.
Otii 3 firmware should always be flashed in Otii 3 application.

The unit was recovered by resetting the flash according to these steps:
NOTE, this is for Arc hardware.

  1. Insert something thin, isolated in the hole next to the USB connector. Inside, there is a hidden button.
  2. While pressing the hidden button, insert USB to the computer
  3. Release the button
  4. Disconnect and connect USB for a power reset
  5. Start Otii 3, the Arc should now be detected as Arc in DFU mode
  6. Right click and select Upgrade firmware
  7. Disconnect and connect USB for a power reset

In this case, there was also something strange with Otii 3 installation and a reinstall of Otii 3 Windows application solved the discovery of Arc at startup.