the big button on the front-bottom-center of your device.
by trying to restore it. ( you will lose all data not in \storage on your device )
- * insert sd-card in your xda2.
* if in windows ce, you will get a question if you want to format the card.
answer NO. otherwise it destroy the backup on your card.
* hold down both the action button and the power button, while resetting the device with the pen.
* after about 5-10 seconds it should say 'sections=1 press power to flash'
* a restore will only work on a device with the same bootloader version.
you mean in activesync? yes, that is how to release the usb port to be used by mtty.exe.