I have upgraded to WM5 and wanted to tether so after reading through hundreds of posts, I think I am doing everything correct, but after trying at least a 100 times in the last week, I still cannot get my phone to downgrade to YH25 (currently haveZB21) I have tried using the cradle, I purchased a data cable, and even tried it on three different computers. Still no luck. I read the thread from mrailing and SD and followed them, but still having problems here. Here are the basic steps I perform:

Set phone data mode to "as the modem".
Open the PST that is with the SD WM5 release
goto the SW tab.
Change the software download option to "Phone only".
Click open file browse to the YH25 image (
Click start download , enter the code is 000000 follow on screen instructions and after the reset option, hold down the phone send and end keys while resetting to get the phone into PDA emergency mode.

I have also tried doing it without going into PDA Emergency mode by just pressing the reset button. Still will not work. All I get is the "PDA Device found" "Eboot Version ok" then "[Phone] Download Start" in PST and the phone screen just stays on "Waiting phone Download" I have let it run over night several times thinking if would go, but is just hangs there. Does anyone have any suggestions on what may be happening or what I need to do to correct it?