Description
You may get the "Connecting to the target... java.lang.Exception: Could not find device EP4SGX230" when using the Stratix® IV GX FPGA Development Kit due to a bug in the Quartus® II Software Version 9.0 Stratix IV GX FPGA Development Kit installer file.
To fix this issue, download and install the appropriate Stratix IV GX FPGA Development Kit installer file appropriate for the Quartus II Software Version you are using.