K800i debranding question

[madmax2]

Hi all,

I was thinking of debranding the phone.
Which is better?

1.Upgrade to K810 firmware K810_R8BA024
2.Upgrade to K800_R8BF003, also what are the new features is there any different to the K810 firmware?
3. Upgrade to a Walkman phone?

Anyone know if there is a way to get the walkman player cos I hate that you can't just press up or down to choose songs but need to go back, enter playlist then select.
Previously I had the w810 and w610 and although I thought the player was pretty simple, it turns out just missing this feature in the k800i is a pain.
But I wanted the better camera so I bought this phone, so you win some you lose some.

Note: I wish SE would make a good walkman and camera phone instead of just one or the other. Anyone know any model that has both good features. Cos most of the walkman phones has a crappy 2mp camera which is not good considering phones are advancing so fast, yet still only put a 2mb camera and only way to get a better cam is to buy Cybershot phones but then you get a crap walkman.

Also can someone explain difference between customisation/cda files and fs file.
How can I backup my network settings, cos then I can put it back in if I want to...cos I got a branded three phone.
Is there a breakloader file I need to flash so I can use far manager?
Also where is the network branding and settings located?