HOWTO: AVR-ISP-MK2 Installation on Windows 8.1 64bit

Started by, February 20, 2015, 11:36:13 PM

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I've had problems with installing device driver for Windows 8.1 64bit
with the drivers included on the Olimex website, because they are not signed.
Restarting Windows in mode without checking for unsigned driver did not help because
after reboot Windows again refused to use the Olimex driver.
So here is my solution, may it help others not to waste uncounted
hours by resolving it:

1. In windows device manager delete mk-II drivers, including driver files
2. if BitLocker activated, pause it in BitLocker configuration
3. restart windows 8.1 with support for unsigned driver installation
by choosing following windows 8 menus (I use the german version, so i
have only the german menu names): "Einstellungen" (Settings) from the
right windows panel, then
(Update/Recovery)->"Wiederherstellung"(Recovery) -> "Erweiterter
Start" (Extended Start). In brackets I've given my translation of the
german menu entries to chose. When restarting you have to chose the
option to start windows without driver sign check.
4. Download libusb-drivers from, insert AVR-ISP-MK2 into
usb-port and start inf-wizard.exe. Chose the mk2 to install the
5. Restart windows, finish

I hope this helps.