[USR-TC] Need help with Hiper DSP code upgrade

Group I'm trying to get V.92 code on my modem rack. I'm getting an error when upgrading the DSP code. Here is my hardware DSP code 2.1.85 Hiper ARC code 5.3.2 Hiper NMC code 8.6.3 I get an error upgrading the dsp code to 3.5.2 Its some TFTP error. Any help would be great.