1. Download the SE "Update Service" from here into your laptop/desktop
http://www.sonyericsson.com/cws/support/so...tio?cc=my&lc=en2. Make sure your Satio have at least 50% of battery life.
3. Make sure your laptop/desktop are connecting to the internet.
4. Run the application and follow the instruction. You'll notice later that it'll ask you to shutdown your Satio and REMOVE/REINSERT YOUR BATTERY and hold the call button before connecting to the usb. I've forgot to do this last time and keep blaming the software instead.

None of your data (eg pic, video, doc etc..) or your installed applications (eg games) will be lost. In my case, even the setting for the display timeout unchanged after update. It is similar to the windows automatic update. Nevertheless, it is always a good idea to back up your stuff. Just use the SE pc suite will do.
ps. you might want to install Hellox2 before updating to the latest firmware.
happy updating!

Added on April 21, 2010, 8:57 amThe bad reception happen even before I upgrade the firmware. I was hoping that the new firmware will solve this. Maybe the k800 reception is unusually high

So, these days, every now and then, I've to stepped out of my lab to see if there's any miss call. Else where reception is great. Nevertheless I still love my Satio haha..

maybe ur post should be pinned first page la.
HelloX2? so i need to get that first?hmmm.