Forum Discussion
Altera_Forum
Honored Contributor
11 years agoTo paraphrase Forest Gump, "it happens".
Before considering any legitimate hardware problem, do all of the reset-ish things you can do: power cycle the board, unplug/replug the USB cable. Depending on what operating system you are on, kill any JTAG related process that might be running. (jtagserver.exe, jtagd, ...) Then, scan the chain in the programmer and try again.