Instructions:
Use Cmonex Treo Pro GSM HardSPL
from here:
http://forum.ppcgeeks.com/showthread.php?t=95870
or here:
http://forum.xda-developers.com/showthread.php?t=582774
After you do that just start:
ROMUpdateUtility.exe
DISCLAIMER:
THIS ROM IS FOR GSM DEVICES ONLY AND IS NOT FOR CDMA.
THIS IS A BETA ROM. THE ROM IS PROVIDED FOR TESTING AND PLAYING.
IF YOU NEED A STABLE ROM, USE PALM ORIGINAL ONE