I have successfully ported TWRP Recovery to the Rezound. It is an unofficial port and all credit goes to teamwin.
1) Can't copy things from computer over USB to the internal sd card. External card is fine and you can use the file manager to copy it over if you want.
1. Download the version for your firmware version NOT ROM VERSION
2. Flash the zip via PH98IMG.zip. If you want to flash via fastboot, use the command "fastboot flash recovery nameoffile.img" if and pull the recovery.img out of the PH98IMG.zip
MD5 of GBPH98IMG.zip: D60D06F3AAF0346C1308CA2272638000
MD5 of ICSPH98IMG.zip: 4191B038840F1A670C0D515A804F383D
Me: Rebased on EVO3D 2.2.0 Version
On-screen keyboard in recovery! -- supports long press, backspace repeat, and swipe left deletes everything left of the cursor
Name new backups and rename existing backups
Rename files and folders in the file manager
Backup archive splitting -- allows backup and restore of data partitions larger than 2GB
Simplified XML layout support between resolutions
Added dual storage selection radio buttons to zip install, backup, and restore pages
Improved zip install compatibility
Updated update-binary source code
Numerous small bug fixes and improvements
5/8/2012 - RC1
Rebased to EVO3D 2.1.1 Version
Fixed internal sd mounting
TWRP Team Fixes:
Per-pixel kinetic scrolling in file selectors (this will be ported to the console and listbox in a future version)
Updated stock themes to a unified ICS-look - thanks to racks for providing the new look!
Fixed a bug that caused a crash and restart of recovery when rebooting system right after a zip install
Fixed a bug in the 720x1280 XML layout that prevented restoring a backup
4/22/2012 - BETA1
Bug: Internal SD card didn't mount
Note: I have sold my Rezound. However, that does not mean this won't be updated.