Compressed Bit Stream (EP3C40F484C7)

[Altera_Forum]

I have been trying to program a Cyclone III (EP3C40F484C7) in Passive Serial mode, driven by a CPLD, using the RBF file. When I program the part with a compressed RBF file(1,289KB), the part programs as expected. This RBF file is created by selecting "generate compressed bitstream" in the configuration settings in Quartus. However if I program the part with an uncompressed RBF file(3,488KB) I never receive a done back from the part and it does not program. 

 Has anyone else encountered this issue?  What might be a reason for the bitstream requiring compression?   Thank you.

[Altera_Forum]

actually you only need the compression if your program memory (flash EPCS group) is less than your program created. 

Simply adjusting the compression of.

[Altera_Forum]

Thanks, but I am not programming a flash, I am programing the FPGA directly with the RBF file.

[Altera_Forum]

Hi, cprillo 

Did you fix the problem of umcompressed RBF file? I have come to this problem too, on stratix II fpga.