Batman: Arkham City Cheats
THe problem with this glitch is you can't get the hacking tool to even operate on the door,so there is no way to select any words.
So I downloaded this patch (after careful AV and malware scanning) extracted it to see what was changed, backed up the original files then patched away.
No issues with starting, or getting into GFWL, and lo & behold, not only did run smoother (DX9) but I could also play under DX11 without crashing or stuttering, and though the lock to to the tower was showing red, I could still use the cryptoscanner and open the door. It worked wherever I saw a Tyger locked door. I went back outside after the next phase but before I went to the finale and I was able to open previously locked doors for trophies etc. and everything worked great.
I don't normally contemplate patches of this sort but after all this time I'd invested in this game I wasn't going to be beaten so I hope it works for anyone who wants to try it, I'm glad I did
As I say, it worked for me and I'm now just going through all the periphery bits on this awesome game, then it's off to complete AC:Revelations