The only thing I can think that might have caused this was when I installed Archidroid I (foolishly?) selected the only partition that wasn't ext4, to be set as ext4. It's not booted past any of the bootscreens on any ROM since I did this.
I've tried wiping all data and cache and also doing a data/factory reset and every "clear data" option available and I'm still caught in a boot screen loop on any ROM I try.
I've formatted each of the folders on the device by mounting and formatting (I don't need to keep any data on the phone) and then to get a new ROM on the phone I've inserted an SD Card, mounted it in CWM recovery and installed it from the .zip that way, all ROMs I've tried just lock up at their boot screen, it just loops over and over.
I've searched this forum and on Google but cannot find a solution or anyone with a similar issue, most that have had a similar looping problem say they performed an Odin factory reset, which brings me to my next question.
I don't know the region of my phone as I cannot access the dialler or any of my settings to find out the region, and forgot (as I rooted so long ago). I do have on the back of the phone the codes:
FCC ID: A3LGI9305
as well as my IMEI #
How do I know my phone region, and which firmware/rom would I use to perform a full factory reset to at least get it booting again?
Any tips/ideas please, that would be much appreciated.