Originally Posted by jalize
I installed the JB rom that was release for Egypt yesterday, because it uses the same multi CSC as South-Africa. I installed using Odin3_v3.04. After the installation the phone (S3) were as before the installation except it was upgraded to JB. It took me a full 2.5minutes to upgrade to JB.
Your phone will be then on the Official JB release. It even retains the Vodacom boot animation!
Steps:
1) Download: Samsung-Updates.com-GT-I9300_EGY_1_20121024094758_x193ir97by.zip (Link ->
http://www.hotfile.com/dl/177388037/...1_EGY.zip.html)
2) Unzip to get this file: I9300XXDLJ1_I9300OJVDLJ1_I9300XXDLID_HOME.tar.md5
3) Then follow this guide:
http://www.theandroidsoul.com/i9300x...laxy-s3-guide/ (Similar for JB 4.1.1) or
http://rootgalaxys3iii.com/s3-i9300xxdlib/
Hope this helps