Well lets have a go then owing to the router not being much good to me now since i went VDSL with talktalk.
So i have got a TTL/Serial/Usb lead on order.Wont have no problems doing the soldering side of thing. Its the putty side of thing im concerned with I do have putty installed and do use it for a web besed webui. but all ive ever done with it is log in and copy & paste a programme restart line into it ...can this cross flash be done the same way or is there lots of typing to be done
TIA
After the soldering is done its smooth sailing with hacktrix2006's guide. If you didn't brick it by dodgy soldering I don't think there is much to worry about. His pictures are very reassuring and I believe all but the most serious of typos can be corrected.
It is just a few commands into putty or terminal app of choice and then visiting
http://192.168.x.x (I forget the default IP of the unit) in your browser, logging in and clicking upgrade to get you back to the newest version again.
The version shuffling could be avoided if someone provided a newer "pre-cut" image though why change what works I guess.
I am using mine on VDSL BT infinity just fine so its worth the risk as you mentioned.
Links sent via PM. Also remember don't do what I did and connect the 4th wire for voltage to the router, I hear it normally doesn't end well.