files.ettus.com/binaries/e100-misc/n200_duc_clear_3_4_images/?C=D&O=A

Icon  Name                    Last modified      Size  Description
[PARENTDIR] Parent Directory                             -   
[   ] usrp_n200_r3_fpga.bin   2013-04-02 19:07  868K  
[   ] usrp_n200_r4_fpga.bin   2013-04-02 19:07  874K  
[   ] usrp_n210_r3_fpga.bin   2013-04-02 19:07  1.3M  
[   ] usrp_n210_r4_fpga.bin   2013-04-02 19:07  1.2M