Flash K800 CID53 with K810 software CID53 (for begginers)

[jimh0612]

Hi have read all the way through this thread and I think Ive got the info I need. I mainly want to debrand from 3 UK, so I think I just need to change the CUSTPACK. Can't seem to find generic English K800i CID53 though.
If I follow through and reflash to K810 what advantage do I get? My details are the same a rojanu post#155.
Sorry I'm a noob at this. Great modding CD players but hopeless with phones and dont want to brick it. Already made the SEUS mistake and ended up with CID 53.
Thanks for any help.