Firstly I want to say a massive thanks to itsnotabigtruck for the great howto.

Before i update my phone I am hoping that my few questions can be answered by someone who knows a little more than me.

I have an Australian carrier branded phone so I know i want to use a 005 firmware

I have a question about which files to download
I know the guide says "Click Unmark All, then scroll to the bottom of the Files section. Tick the boxes for the two files starting with DFL61_HARMATTAN."

I am wondering what the other files are for and do i actually need them?

There are some BIN files
xxx.......keyidentifiers32
ape_hwc_xxxx
ape_cc_xxx
cmt_hwc_xxxx
cmt_cc_xxx
simlock_maemo_xxxx (2 of these files)
RM696_xxxxxxx_signature

And a few other files ending in pcx, vpl, xml and dcp

I have seen some quides/videos where people use all of the files and some (Like this guide) which says they are not needed.

If I want to keep my carrier customisation should i ignore the EMMC file or is it best to use the newer non carrier branded PR1.2 EMMC file when updating from an old PR1.x?

When my carrier releases PR1.2 i am guessing that it will be possible to replace the generic 005 firmware with PR1.2 firmware from my carrier as it will not be a downgrade?

Thanks!