Usb brick , cannot get temp root

hello wizards,
I know this is the only place where I can get a real help.
My problem is that I some how got usb brick on HTC Desire, no sdcard support, no pc connection via data cable, no fm radio.
I came across this thread

I followed it step by step. i did step 9 and step 10. At step 10 after force stop terminal emulator, it cannot be reopened. Therefore, it didn't fix my phone. Then I tried zergrush instead of rageagainstthecage-arm5.bin but got error this error:

[**] Zerg rush - Android 2.2/2.3 local root
[**] (C) 2011 Revolutionary. All rights reserved.

[**] Parts of code from Gingerbreak, (C) 2010-2011 The Android Exploid Crew.

[-] Cannot copy boomsh.: Permission denied
Now I am again in dark. I am losing hope. Don't know what to do.
Desperately need help of you guys.

HBOOT 1.03
FROYO 2.2.2

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