The 2008 version was dreadful. I bought my 9300T second hand a year later, very cheap, just a few days before Humax released an update (1.00.18) to tackle complaints that were still being expressed.
Zip file is for latest version (1.00.26 from 2011) which has the added feature of not reliably recording an episode of a series when two or more episodes of a series are broadcast in consecutive time slots. Some people reported that they reverted back to version 1.00.23 due to this.
The main improvement was supposed to be the late recording starts not being so late. Some initially found it better, but I suspect that may have been just initial luck for the initial programmes recorded with the new software. On average mine were worse with the update.
PVR-9300T_1.00.26.zip
Software for the previous functional version (1.00.23):
9300T_apps_1.00.23_release.hdf