Me, Sarcastic?? NEVER~~
Join Date: Mar 2003
The 760 install cd does not include the os 4.1 rom, there is no way to ensure you don't "render it useless," but just follow the instructions and you should be fine. However if you ever need warranty or replacement, Sony won't touch it since it was done this way. I did it over a year ago and have had no major problems other than a few soft resets needed, but that could be due to other programs I installed. Best of luck!!
Palm V>Clie S300>Clie S320>Clie N610C>ClieN710C>Clie N760C>Clie NR70V/U>Clie T665C>Ipaq 3955>Clie SJ33>Clie T665C Yeah.