Aug2-4000-4.3.zip is for replay4000 & 4500 series recorders that have already be
en upgraded to 4.3. Earlier software versions will not boot in post 4.3 recorders.

Replay40xximage original version.zip and RTV4040 v4.1.zip are for Replay 4000 series recorders only.

Pre 4.3 software (image dated Jan 2002). For post 4.3 software use Aug2-4000-4.3.zip image.