I just got a question I want to clear up regarding firmware on my phone, it came with 4.2.2 and HBOOT 1.54 so am aware that it cannot S-OFF currently, I have unlocked the bootloader via HTC dev, installed custom recovery TWRP, rooted and installed ARHD.
Everything is running fine so no problems there, I've read that ROMs do not flash firmware and with my phone currently being S-On still it's not even possible unless its an official signed update. If I remember correctly my firmware was originally 2.17.401.1.
After flashing ARHD 20.1 in settings my Build number is showing up as 3.09.401.1 CL235216 release-keys.
This is what i'm a little confused about, is the Baseband version or Build number that indicates the firmware?