HTC RUU Stuck on Sending... topic

Hi,

I'm trying to update my HTC Desire S to the official Android 4.0 (HTCDev). When I'm trying to install it through RUU, it won't go past the 'Sending' part. My phone shows the grey HTC logo but that's it.

I tried 2 different PC's, different USB-ports... I installed all drivers (installed HTC Sync) but it's still not working.

****LOCKED****

SAGA PVT SHIP S-ON RL
HBOOT-2.00.0002
RADIO-3822.10.08.04_M
eMMC-boot
Aug 22 2011

What's wrong?