So let's get to the topic. I am going to install a new ROM, it's called "Beanstalk" or something, Android version 4.4.4, based on CM11. The link of the ROM is here: http://www.romzj.com/resources/samsu...id=90&id=14867. But since it's in Chinese so it's just for reference for you guys.
The problem is, I want to do a clean installation. I know that I need to use the recovery to wipe many things, I always do "5 wipes", like factory reset, wipe partition cache, dalvik cache etc. I don't remember so much but that's how I install new ROM. And that's the reason why I don't use stock recovery, I used that Philz becuase it can wipe 5 things for me, and official CWM recovery can't be installed in my phone (I mean the ROM manager app in Google Play Store that can install official CWM recovery), I don't know why, when I open recovery mode after installing official CWM it's still the stock one, maybe I messed with my phone too much before.
Anyway that's not the main concern, now that I think the "5 wipes" still can't completely remove the previous ROM's stuff. For example under the "device root/data/data" directory, some stock firmware's applications' folder still exist (I'm just predicting they will exist from my experience, I'm still in old stock firmware):
And some files of old stock firmware's app data is still here in sdcard0, I mean the internal storage of my phone, not external one. Names are like "com.kimi.ggplay.sklrtw" or something. Maybe "update.zip" can be deleted too.
Of course I will use that Philz recovery to backup my whole ROM before flashing new ROM. But I want to know how to completely delete unnecessary items in new ROM? That is, old files of the N7000ZSLR1. Thank you in advance!