[Q] downgrade to custom 4.3 over stock 4.4 possible? topic

hey guys this is my first post and i looked forum and didn't see any information about downgrading on 4.4 to 4.3 . i saw some guys saying its not possible but i assume they mean official downgrade. the thing is i got n9005 with 4.4.2 installed and iam not happy with it so i want to downgrade it to unofficial 4.3 roms. as i understand boot loader changed with 4.4.2 and doesn't allow to go back but what if we can install new bootlader and official ROM. is that not possible too?

2nd q is 0x1 means void warranty what about 0x3 (they say tripped) is this something real or i misunderstand this?

3th q is can i even if i downgraded custom 4.3 and want to go back to stock rom is it possible?


i don't want posts saying its already inside of forum. i just want straight answers.