RT3 does not have a hard drive.
For latest maps on CANbus device you need firmware 6.63.
If your device is VANbus then you use 5.52 firmware.
Here is torrent link for Europe latest maps 2016-2017, be kind and seed:
[Please Register or Login to download file] VANbus device firmware 5.52
[Please Register or Login to download file] CANbus device firmware 6.63
[Please Register or Login to download file] Burn ISO file you need on CD-ROM, at lowest possible speed.
You cannot flash VAN device to CAN and vice versa.