Programming Cyclone IV FPGA using USB Blaster Rev A

OK, then there might be some problem in my board, as even though I can upload configuration data to EPCS memory the FPGA doesn't configures itself and CONFIG_DONE pin

remains LOW after power-up ( while nSTATUS is High ). The voltage distribution on my board is as follows:

VCCIO ( All Banks ) = 3.3V

VCCA = 2.5V

VCCINT = 1.2V

So far I can only suspect some broken track on the board, as schematic and PCB layout are according to Fig 8-28.