- Start Win7 in "allow unsigned drivers" mode.
- Turn off USB connectivity in ActiveSync.
- Start the phone in bootloader mode by holding down vol down while booting.
- Update the drivers to those here. Note the 64 bit option. If "the device cannot start" unplug the phone and plug it back in again.
- Run USPL.
- Flash ROM. (Serial HT847KD00009.)
Or...
- Copy BLACIMG.NBH into the root dir of your Storage Card.
- Turn off your device by using the Power Button.
- Remove storage card.
- Go to Boot loader mode. (Push and hold Vol. Down + press Power button.)
- Insert storage card when you see USB displaying on screen.
- Disallow USB connections in ActiveSync.
- Disallow On-Access virus scanning.
- Run USPL 2.5.
- Phone should restart and ask you to press the power button to start flashing the ROM.
- Apparently you should always do a hard reset after an update.