BB Bold 9700 :: Double Blinking Red Light After Failed Update

When I installed my BB Desktop Manager and first plugged in my Bold 9700, it asked if I would like to update various features on my phone, to which I accepted. The update froze- I can't remember quite at which stage but I recall it was at the end stages and the stage at which it froze started with JVM. After waiting an hour or so, I disconnected my Blackberry, not knowing what to do. The screen remained black and the red light started blinking.I looked up fixes for the problem and they seemed simple- one used JL_Cmdr to do a full wipe- but I am using Windows 7 and it isn't compatible. I get a brief command prompt screen for a half second before it closes.

The second fix involved using the command prompt to get to the Loader in the AppLoader file- but I ran into another problem- when trying to open Loader.exe, I got a "The Application Loader requires the Blackberry Device Manager to be installed." Then looking up THAT fix, I downloaded a new OS and redownloaded the Desktop Manager, but am getting the same error.