Using heimdall is iffy. Odin through Windows is probably your only sure way of getting it to work.
[BATTERY] Plasma Battery! 🆕🆒🆓 & wickeddecimalbarwide_colors
Charging still shot
n00b-xda-disciple's Wicked X Video review
Sent from my Sprint Samsung Galaxy SIII on TouchWiz 4.4.2 with Conquest: Singularity v2.2, Ktoonsez' latest kernel and the latest Philz Touch Recovery.
normally i'm not the one to say this but its very easy to find the download link for Odin if you search through google.........and i'm on a windows netbook myself and its been working fine with both Heimdall and Odin.....and nice that you used the towel root method...........but i would suggest going to philiz touch recovery, i personally went straight for it when i came to the s3 but hey rom manager worked nice