I attempted to use the new build.prop file to fix the market issue where some paid apps were not found for download. Here is the process I used: Download build.prop, place it on SD card. Use Root Explorer to copy build.prop into system/ Deleted old build.prop file from system/ (I made a copy of the original and placed it in a folder on my SD card as a backup) Turned phone off. Turned phone back on and got to the Motorola logo, then the screen is black (backlight is still working, the screen is technically on, there just isn't anything on it). Phone never gets to the boot animation and will not boot back up. Anyone know how I can fix this without having to flash the SBF 2.1 file again and re-root, install 2.2 update.zip, and download/setup all of my apps?