all downloads .... free
to download dct4 flash file
download you need the AL-plugin
How to download the flashfiles here

Datapackage

Modell Version Asic Type Datapackage  3220 (RH-37) 5.90 2 Download    3220 (RH-37) 6.22 2 Download    3220b (RH-49) 5.10 2 Download

Service Manual

Modell Level Asic Type ServiceManual  3220 3 + 4 2 Download

Disassembly Video

Modell Level Asic Type Video  3220 3 + 4 2 not available