ftpd problem

I am new to uClinux and to Linux generally too, I want ask someone experienced how to use ftpd server to be able to upload files into Altera dev. board. I also have the same experience as smcnutt - I can connect, I can download data, but I cannot upload them to the board. I though there would be problem, that filesystems are write protected, but I also tried to upload files into "/var" directory, which is located in ram with attribute "rw" (this info I got using mount command)..