to flash a custom rom you have to follow the directions provided by that rom dev.androidphan88 said:so formatting /system before installing a rom .zip file should not be an issue.
just would like to do it manually
it will be in the first post of their thread. if it's not, then ask in the thread for that rom.
ok, i just went to the apex rom thead. it says...
Meet all the requirements listed at the top of the post
Wipe data/cache, dalvik cache (only wipe cache and dalvik if coming from RC1)