[qidquopro]

Hi, I am very interested in trying some of the creations by members of this site. However, before I try I want to be sure I can, at worst case, get back to where I started. I have application/config backups of my phone but I do not have ROM backup. Would anyone know how I 1) Make a backup of the ROM / BL etc and/or 2) Find a factory copy of the ROM / BL etc?

Thanks