Greetings, I'm the author of the GomdoLight ROM, and wanted to say hi here. Unfortunately I don't speak Vietnamese language, as you might have noticed already. However, as most Vietnamese people are known to be highly educated and capable of spaeking fluent English, I don't think I will be suffering from language barrier here. I am now aware that my GomdoLight ROM, or more specifically, 'System Enhancement Pack', is spreading around Vietnam, and feel very happy about it. Although it is not a full ROM, but rather a heavy modification of official stock firmware, I have been using it myself for over one year, and I'm very confident it will give you what you want: outstanding stability and performance, various disaster-recovery measures, and quite impressive battery life. GomdoLight is not just a script to delete some APKs in system partition; it REORGANIZES the system for you, and modifies the system every boot in the background, to meet your needs and give what you expect at the moment. In the past GomdoLight was intended only for Korean users. Therefore I did not provide any English documentation. However, now that I'm aware that I had users around the whole world - Vietnam, China, Indonesia, France, Brazil, United States, and so on - I felt a strong need to add multilanguage support. GomdoLight's installation script (Aroma) is completely rewritten for this purpose. As a result, starting from Wave 3, GomdoLight installer now supports English language. But I did not stop there - Full documentation is now available in English at the following location: http://en.gomdolight.lg.gomdoli.us - and moreover - Several key sub-documents stored in GomdoLight Users' Community (http://cafe.naver.com/gomdolight) are also provided in both Korean and English. Therefore, you will be able to find out almost everything about GomdoLight; what it is, what it can do for you, what it is not, and what you will get after the installation process has finished. Whenever GomdoLight is updated, or it has important hotfixes, you will also be able to receive notification in English if you follow @GomdoLight at Twitter. (However if you have questions, do not ask via Twitter - I will not answer questions there. Multilanguage support center is planned.) Thank you again, and have a nice day. - Gomdolius.