Hardware/ARMEBS/4/Troubleshooting
From UIT
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ARMEBS4 Troubleshooting and common problems
Wrong driver
openocd says
Error: failed to reset FTDI device: -1 Error: unable to open ftdi device with vid 08ee, pid 3100, description '*' and serial '*'
Solution: The driver is wrong, run zadig.exe, "options -> list all devices", select "armebs4 interface 0", select "WinUSB" driver -> Replace driver