Yes Hello Ptree here w/ a tutorial on how to jump from CM7-2-Liberty/Liberty GB/Liberty GB Nightlies!
I am doing this cause I spent 4 Hrs, SBF'ing and figuring out what went wrong. These instructions worked for me, so I only know these work specifically for Droid R2D2.
Step 1Recomend) SBF back to stock Froyo
Download the 2.3.20 SBF file for the DX. [Here]
Step 2: Find Z4 Root App and place on SD card pref. under Download.When u have SBF'd and activated phone, do not sign into Google keep going.Now open your App drawer and go to files app, select it and go to mnt/sdcard/download.Z4 should be there select it to install, it will prompt u to enable usb debugging , and outmarket source, and take u there, hit back button and when Z4 starts select permanent Root.It will root ur phone and reboot itself!
Step 3:Select Market and sign in , when Market starts hit search and start w/ Busybox/D2Bootstrap/Liberty Toolbox/and whatever app ur using to make backups, Ie: Titanium,Root Tools, My Backup etc.Install all these apps and run each one to give superuser permisssion.I personally prefer to make my own backups that is why I suggest D2Boot, otherwise u can use Liberty Toolbox to install /nan backup rom.Select Lib Toolbox and rom manager , then dwnld and install Liberty 2.0.1 .U r now on Liberty.
Step 4:Next step------
Install this zip on ur SD card. Not sure if u can access this zip from Toolbox ROM manager , so D2Bootstrap into Clockwork .u are going to now wipe/data and cashe.Then scroll down to install zip and select , then select apply zip from...Usually is at bottom of list either in open or under TBH(Teamblackhat)Select zip , then reboot, U should now be on Liberty G.B.
Step 5: Dwnld Liberty Toolbox and go to ROM manager , then select Nightlies. v.09 should be latest , let it dwnld and wipe and install.Set up phone,
U shold now be on Liberty GB Nightlies v0.9.
From here u can dwnld from TBH App a zip to put on ur SD card , that when u flash will SBF u thru clockwork instead of all that RSD lite ****.
Hope this helps Some1 !