I need some help with my new K800i - CID53

[wakish]

Phone details:
Bought from UK: - branded to Tesco Mobile
Phone type: Sony Ericsson K800i - CID 53
Service Provider is LOCKED
1) This means I should flash it only?

I have handy the following:
- a guide I found here: Flash K800 CID53 with K810 software CID53 (for begginers) - Top Sony Forums
- FAR package, XS++, SeTools
- Firmwares corresponding to my phone: MAIN + FS (R8BF003, Europe 2, RED53)

What I lack:
- custpack
(related details: K800i_CDA102511_183_R2A_GENERIC_EUROPE_2)
2.1) Can someone provide me with this file? I could not find it anywhere on google or 4shared.
2.2) Or is there a way to generate this file?


I tried the following:
As per the guide I mentioned above, when I arrived till the first part, I had 3options:
- babe flash..
- raw flash..
- and a 3rd option which i can't remember right now

3.1) I could not select or change these options either by mouse or keyboard. What's wrong here?
3.2) What option should be chosen?

4) The guide above obviously lack a lot of precise details, is there any other full guide or can you just quickly give me a hint of the details not actually found in the guide?

I hope someone(s) can help please.
Thanks for your time,
- Wakish -