mobile

So I'm currently running BlissPop 5.0.2 and I wanna upgrade to a 5.1 ROM, but I was told I need to update bootloader and Radios, sorry I don't have much experience on this Subject, So what would be the easiest way to update both of these?? Thanx


And say the ROM I'm flashing doesn't work out for me for whatever reason and I need to Restore my nandroid backup (5.0.2 ROM) would I have to downgrade or whatever the bootloader and Radios again?? I'm confused lol thank you