What is the best upgrade I can do on my SE K800i to get the most out of it?

[xtreme]

I have seen applications on the forum (SETool 2 Lite, XS++ and FAR) but don’t know what they really do. I guess the first thing I must do is upgrade/change my firmware. Can I upgrade it to K810, K850 or even better? Which application is best for that?

there tones of things you can do to your phone,

get latest firmware
apply patches, improve the functionality of the phone
- add functions
- add features
- remove unwanted features
apply elfs, these are advanced patches
load flash menues, screensavers
change drivers of your phone
- change camera driver
- change accoustics (sounds)
- change dispaly drivers

******** LOTS MORE *******

keep an eye on the forums, really some cool stuff

[SeaMonkey]

I have seen applications on the forum (SETool 2 Lite, XS++ and FAR) but don’t know what they really do. I guess the first thing I must do is upgrade/change my firmware. Can I upgrade it to K810, K850 or even better? Which application is best for that?

Yes you can convert K800 -> K810 but the tool depend on CID of your phone, so for start just install USB flash drivers and connect phone with XS++ and XS will create log-that log post here without IMEI number and will direct you to wright direction.
Here you have tutorials: USB Flash Driver Installation - Guide - Top Sony Forums
XS++ 3.1 Guide-Flashing, Customizing, Recovering - Top Sony Forums

[xtreme]

install USB flash drivers and connect phone with XS++ and XS will create log-that log post here without IMEI number and will direct you to wright direction.

OK, thanks!

Here is my log:

22:33:49| Baseband ID: 9900

22:33:49| Protocol Version: 3.1

22:33:49| Phone name detected!

22:33:49|

22:33:49| Profiling SEMC phone...

22:33:49| Platform: DB2020

22:33:49| OTP CID: 49

22:33:49| EROM CID: 49

22:33:49| EROM Color: Red

22:33:49| Phone ID: K800

22:33:49| Region: EUROPE_4

22:33:49| CDA: CDA102568/13 R4A

22:33:49| Firmware Version: R1JG001

22:33:49| EROM: R3A011

22:33:49| Ready for operation!


I found in the guide "1) Converting to CID52 (if required)" but can't find anything about if it's good or bad to upgrade, just that I Can't Revert Back To CID49 Or CID 51.