[Q] Please help. Tried to root and failed, having difficulty reverting to stock!

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http://forum.xda-developers.com – So I tried to root my phone so that I could delete all the bloatware that might be responsible for the ~700mb of ram being used while my phone is essentially idling, etc., I'll spare details because it was very foolish of me to try to root my phone after having it only a few days without any technical knowledge of it or rooting. So currently I'm upset looking at my phone stuck at either "Downloading..Do not turn off target !!" or the firmware upgrade error screen when I try to start the phone up. I'm trying to install the stock image (in the PDA box I have the file CI605_I605VRLJB_I (HowTos)