Error when loading a new FPGA Version on Cyclone IV GX

Hello,

I have a major problem sometimes when i try to load the Flash Memory with new FPGA Version on Cyclone IV GX.

When I load the FPGA Flash it is stop in the middle with Error Message & the J-TAG is Unconnected without access.

It is a major problem because Then I can't access to the J-TAG or to FPGA or to Flash.

The old version charged properly.

I have this major problem sometimes.

Can U help me to fix this problem A.S.A.P ?

Best Regards

Avi Simon

Elta-IAI

Israel