VCCINT measures 1.201 Volts.
I will try JTAG connection again and post the error messages.
At the moment I think the FPGA is bad.
What else can I check on the board before I unsolder it?
The FPGA had many bent legs when it arrived, but I straightened them using the microscope. Maybe something went wrong mechanically inside the FPGA, or it overheated during soldering but I don’t think so.
Thanks for your help!