Hi there, I am newly registered here. Just got myself a 2nd hand S3 to learn more about Android. Been quite fun. Tested a few ROMs althought didn't enable all features. I tried to search for terms like bloatware, preinstall, etc on here and also xda-developers forum but mostly they end up in the description of a ROM rather than a full tutorial. I noticed that the ROMs released here are usually with removed preinstall_apps under the 'data' folder. What i can see is under 'Data' -> there is preinstall_apps and with a reinstall_apps file. But in ROMs that I find from the official MIUI, there's a bunch of apps there. What I would like to learn is what is the proper process of taking a ROM and subsequently removing these preinstall without making the ROM unbootable? Ideally i would like to do this once for a MIUI ROM which I will obtain from http://www.miui.com/download.html and test the preinstall removals myself. Could it be as simple as removing all the files under 'data'??? and then re-zip?