Searching here in the forums I found some people saying that it was because of a layout change on partitions, others because of knox, or the update in bootloader...
I installed the twrp-184.108.40.206 recovery and tried to install omni rom with pa_gapps, cm11 etc and I always get an error for gapps (couldn't find build.prop or something...). Tried Omega v58 (based on sam) and it worked, then I tried slimkat 4.4.3 weekly and slim_AIO_gapps (advanced wipe, everything but extsd, format data) and it installed everything fine.
It's almost perfect but now I have only a small problem... when I plug the headset the audio is really bad and sometimes I can't hear anything ... I tried another kernel with the same result. Tried slimkat 4.4.2 stable, same.
Does it make any sense to anyone here? any sugestions on how to fix? flash something somewhere maybe :x
and what is the real problem after the 4.3 official update? if slimkat is working maybe we can make other roms work too.
Thank you in advance