So frustrated trying to update the firmware on my OS 2.1. I got the drivers installed (Win7) and the device manager says the USBasp device is working properly. I connect it up while pressing B2, release (screen is not lit; blank) and the firmware update always fails… I’ve tried every variation & other suggestion I read on the forums but it still won’t go. Any more ideas for troubleshooting this?
====== Wed Apr 15 20:36:56 2015 ======
Error uploading firmware.
====== Wed Apr 15 20:37:07 2015 ======
avrdude: error: could not find USB device “USBasp” with vid=0x16c0 pid=0x5dc
====== Wed Apr 15 20:37:07 2015 ======
Error uploading firmware.