Now have Western & Central Europe 2GB 850.2834 [1.70GB] fully functional on my One IQ.
fwiw I wasn't impressed with using Jdownloader with the links you provided - lots orf error messages and drop outs. I eventually downloaded all the individual RAR parts separately from Hotfile via freshwrap.net. This required 30 minutes wait between the 17 segments but downloaded at about 15MB per minute during morning UK time.
Thanks to all for guidance and comments. I think this thread could now be closed.
Regards J
Tomtom One IQ Routes Edition AKxxxBAxxx (2GB)
Navcore 9.053 W&CE_2GB v845.2645 (now v850.2834!)
HTC Touch 2 Tomtom Navigator ABxxxCVxxx (16GB microSD card)
Navcore 7.917 W&CE_2GB v845.2666