Sir, i try to update my Samsung Galaxy acc gt-s5830 for this reason i was dowload "JELLYBLASTV3.signed2.zip" from the mention link "http/www.mediafire.com/download/m3cbyliuiek3cu3/JELLYBLASTV3.signed2.zip" when i try to download this to using SD CARD it was successfully done but after that when i rebut my set it is not open yet. please solved my problem and give me advice what can i do now............Tutul