You will still be able to update if you flash this file.
Software version: cdma_solana-user 2.3.4 5.5.1_84_D3G-55 110812 release-keysMDM6600BP_N_03.18.29P (Software and Radio versions in bold) aka Release version 5.6.890
Verizon/USA and production keys signed. It is not modified in any way. Hopefully it can help unbrick some people/prevent future bricking fears =)
Attached file is the xml from the zip
You will need a different version of fastboot to flash larger files like the system.img. Moto-fastboot allows flashing files over 256 or so MB.
Windows: Moto-fastboot for windows thanks to romracer. Direct Download Link
Linux/Mac: Moto-fastboot for linux in several flavors thanks to eval-.
http://mophoforum.com/the2dcour/RSDLite5.5.rar RSDLite 5.5.0 Download
It's a new version. I haven't seen a newer version posted though I think up to 5.5.x exists already.
DATE:May 12, 2011
Support Support DIAG cmd process for Avon
Support auto-switch on Solana and Targa
Support flashing for new devices
Support flashing large file with size more than 256M