Debrand w580i with rogers...will everything change?

[rapidfan91]

-And to upgrade firmware do i have to flash again every time?

You can use SEUS, but than your CID is 53 and so you only can flash with the jdflasher :(

What would be the best firmware and custom pack to use?There seems to be a few options there but what are the differences?

When you want the best (fasters) firmware use the newest firmware. But for older firmwares are more patches present.
In newer Firmwares are often some bugs fixxed.
And customfiles are not so important like the Firmware ;)

Will the flash themes i use now still work after?

The flashthemes are away you must upload against.

i have seen other people using different os like vista or linux on the phone,how does that work?

This is only fake ;) They use vista themes and often elfs.

Sorry for my english :o