Wiped my phone on 4.0.4 - Still working 0.o

Hello!

I got this phone with a ginerbread rom , i think ... but there was that messege that was annoying it asked me to update because the files are already downloaded i was like oh ok no problem and boom it got updated to 4.0.4 , and my bro's downloaded games through play store gave me some annoying ad's and they were popping like every min so i wiped my phone (Through settings) and the phone booted normally , even though i read alot about how the wiping is affecting the emmc chip and triggers a bug named the emmc brick bug , it also says that if u wiped through settings your phone is gonna brick and i didn't brick! Im currently thinking that if i flashed a firmware now , my phone's dead. and no , the phone is working fine with no lags i watched HD movies and played GTA VC and battery life is kinda good (stays 1day with some texting on wifi) ...

I got another question : Did samsung update the kernel only on 4.0.4 because my update was like 2-3 weeks ago

Sorry if this has been asked before :/ because i already searched the n7000 forums