Solution for issues booting MJA
You can get the latest tar file from http://forum.xda-developers.com/show....php?t=2522810 or http://forum.xda-developers.com/show....php?t=2258107. These instructions should not be necessary anymore. Please download the latest tar file from the links above and use Odin to flash them in download mode
This is for those who are getting contact boot loops on the Galaxy S4 logo
For those who are having a constant boot loop or stuck on the Galaxy S4 screen we (omariscal1019 and I) found a solution. After upgrading to MJA I started to try to get root working and ended up changing something that I shouldn't since it started to boot loop and get stuck on the Galaxy S4 logo.
I thought all was lost and put OctOS for now, waiting for the MJA tar to get posted, but omariscal1019 helped me out made a custom backup with Philz's Recovery in the TWRP format. I was able to successfully boot after restoring boot and system and then wiping data/cache (factory data reset). Here are the files omariscal1019 shared with me and we would like to share with the others in the same situation. I'll try to get more details in a bit up
How to Fix Sound Issues with MJA
MJA Kernel (Flash in Odin): (md5 d73ae5ad211663d9f00d0de7f6402565)
Make sure to flash with Odin after getting your system to boot properly.
NOTE: This is for only those who can flash Phil'z recovery with Odin and successfully boot into that recovery to restore these backups. Use at your own risk and listen to what others say. We have confirmed that the system/boot works, but only by following the directions below. The modem and radio files are yet to be determined if they work...
Download the files and place them in TWRP/BACKUPS/110c8480 (not sure on the last folder name, that is what was in my TWRP backups folder). Inside that one (110c8480) place the 2013-10-31.21.01.21_JSS15J.L720VPUEMJA folder. So in the end you should have the following path: TWRP/BACKUPS/110c8480/2013-10-31.21.01.21_JSS15J.L720VPUEMJA.
One other reason on wanting to restore this system partition is this backup was taken after it was rooted. So after restoring this backup you will have a working root with no Knox messages
Let me know if you have issues or questions
I just wanted to say a big thanks to omariscal1019, reverepats, and KelevrA_8. omariscal1019 for getting my the files to fix my phone, reverepats for letting us use some of his hosted space, and KelevrA_8 for finding the fix for the sound issues. Make sure you send your thanks to them.