Installing Android using only fastboot on HTC Vision

I lost my system somehow. My phone turned off and reboots during starting up. I'm only able to go to hboot (fastboot/recovery etc.) on my phone, and I'm unable to run Android system. I have tried many possible solutions with help of #g2root on freenode: 1. First I downloaded the stock ROM and saved it to SD card (PC10IMG.zip). - It begins to load, and I see - positions. - When I agree to install, there's "- Updating" text near to " Bootloader". Nothing else happens for more than 30 minutes. 2. Then we tried to get rom.zip from official HTC Unlocker for Desire Z, saving it to the SD card. - This time the only list item there was " Bootloader" and also "Updating" text and nothing happens. 3. The last thing I tried was to run EXE file from HTC that is supposed to update my HBOOT. - It also doesn't work. Here are my HBOOT params: >VISION PVT SHIP S-ON >?HBOOT-0.85.0013 >MICROP-0425 >RADIO-26.10.04.03_M >eMMC-boot >Apr 11 2011,23:36:27 Is there anything else I can try to recover my phone?