I have just changed a 2000T to ex-c&w by putting a c&w dump on the chips and I'm sure it will work the other way around ie. put a TW dump on the attys and you'll be ok.
If you can't do the chips then just do the wembley trick (Net id 41047) in an ex-c&w area to get it on CR1 and before it updates unplug it and take it to the TW area your transfereing it to and set the Net id and freq' to the TW area in libby and do a forced update (4321) you don't do the Anti Update mod as this will stop it taking the TW firmware.
excuse me for being so thick,
At the moment i can not see any CR version on any of the engineer pages.
remove red jumper for a couple of miniutes,
libby to 41047 666.750
take box to cw area and let it load.
how will i know when loaded ?
remove box and take to tw area,
libby back to tw area
connect box back up
hopefully then watch tv.