Extension Roms

[TheNinthPlayer]

I can't seem to find any information about this anywhere. What do extension roms do? add apps and features?

[pof]

probably you mean Extended ROMs? See the sticky posts and the Hermes wiki (http://wiki.xda-developers.com/index.php?pagename=HTC_Hermes)...

[TheNinthPlayer]

yes I mean extended roms. I looked at the page again and still don't see any explanation of what extend roms do just a list of the vague filenames contained within them

[pof]

Read this:

Hermes for Beginners (http://wiki.xda-developers.com/index.php?pagename=Hermes_For_Beginners)
Upgrading FAQs (http://wiki.xda-developers.com/index.php?pagename=Hermes_UpgradeFAQ) (see #11 to #14)
How to Unlock and Unhide Extended ROM (http://wiki.xda-developers.com/index.php?pagename=Hermes_Unhide_Extrom)
Available Extended ROM Versions (http://wiki.xda-developers.com/index.php?pagename=Hermes_ExtendedRoms)